If you’re not confident about making a concrete bed, don’t worry – sharp sand is easier, and works just as well. The first type of sand used is the soft sand, also known as builders sand. Bottom left: Repointing rubble stonework. This is huge shame as, when done well, repointing brickwork is a job that can really enhance a home, despite its seeming insignificance. Notice that the mortar is allowed to overlap all the joints and no attempt is made at this point to neaten it up. NHL 3.5 Moderately Hydraulic Lime can be used for permeable masonry materials which is mainly used above ground. Sand for this type of work is often described as concrete sand or sharp sand.. BS 1199 - Water - Should be clean and used for mixing and rinsing of the joints where applicable. Cement Pointing-Rendering The risks of using cement materials on old period houses. Measure the amounts carefully so that each batch will set to a consistent colouring. A wire brush is used to take off the excess mortar and leave a face joint that is only just recessed from the face of the wall. 10.9K posts 18 July 2013 at 6:14PM. Don't use a simple sand/cement mix as it will trap water in the wall and any frost will loosen it; also, it will tend to set too quickly and form weak bonds to the bricks. Missing or damaged mortar is a common source of leaks and a cause of damp in homes in need of wider renovation. For information on HYDRAULIC LIME MORTAR please click the lime mortar tab on the menu. Mortar is typically used for bricklaying and pointing. Pre-mixed roof mortars are also available that are accepted by the NHBC. Sand for this type of work is often described as concrete sand or sharp sand.. BS 1199 - Water - Should be clean and used for mixing and rinsing of the joints where applicable. We’ll start with Builder’s Sand so that we can provide information on what not to buy if you want to create a sand pit area for children. Wait for the water to dry off before repointing, Aim to replicate the colour, texture and durability of the existing mortar. A key benefit of adding sharp sand to the mortar mix is that it can prevent cracking during the drying process. Supplied: 25kg | 1 Tonne Grab bags | Silo, Limetec Traditional London Hydraulic Lime Mortar. Repointing brickwork should be high on the priority list when renovating a house. However what ratio needs to be followed for Stonework pointing 4:1:1 4 sand : 1 OPC 1: Lime. 1. Bath To find out more about the changes to BS 5534 download our guide. The term sandblasting originates from those days.Nowadays, it's clear that exposure to respirable crystalline silica during sandblasting can cause a serious or even fatal respiratory disease, called Silicosis, a scarring and hardening of the lungs. Grit Sand Features. 8. 3. Prev Next. Replies. lime mortar joint it does not mean that repointing is necessary. The mix proportions provide below are a guide from which a mix can be selected to suit the construction and local environmental conditions. Sharp Sand - Find a stockist near you today on Garden World, the number one place for your gardening needs. The Pointing Process. The appearance of brick and stone masonry owes as much to the character of the . Sharp sand (aggregates less than 5mm) Tools you’ll need: A wheelbarrow; A large sheet of thick plastic; A shovel; A bucket of water; A spade; Work gloves ; How to make mortar by hand: Firstly, fill your wheelbarrow with the required amount of sand for the job. Use a small tool or pointing spatula and force the mortar in from a hawk. This page contains a price guide for … Natural Hydraulic Lime mortar consists of two building materials, lime and sand. In the past, blast cleaning operations were done with silica sand. Builder's sand (or bricklayer's sand) is finer and softer and mixed with cement and water to produce the mortar for laying bricks and blocks. How long the drying process takes depends on the weather and the position of the house in relation to the sun. It was easy to spot on this job because the joint was a different colour in the course leading up to the lamp. However, if there are open or poorly filled joints that offer no resistance at all then selective repointing will be required. You can make your own ceramic sculpture, have a metal shop cut shapes according to your template, or just use an interesting shell, branch or rock. The wire brush also cleans up the stonework as it moves over the surface. Normally used where more flexibility and smoothness in application are required. One has lots of sharp sand already in the garden so would like to use it rather than get rid of it and buy ballast or whatever. Finish flush or rebate a little if the joints have widened with age or for personal preference and aesthetics. Ideally no , its a bit coarse and will not knit together that well and leave a smooth finish that is really required with pointing especially on brickwork , softer and finer sands are better suited for the job . Work down the wall (this will avoid any debris falling on to areas which have already been repointed), working on about 3 rows of bricks at a time. 5. BS 3148 - Lime - Lime putty should ideally be used, although bagged hydrated lime is more commonly used, and can be slaked prior to use to increase qualities and improve workability. For lime putty mortars, the sand used for building, pointing and backing coats of render and plaster should be a washed sharp coarse sand. Within five hours, a team of two complete this stage on this 24m2 wall. Sharp Sand (aka Course Sand or Pit Sand) This type of sand is a fairly course type of sand due … I've been told by a builders' merchant (who didn't sell horticultural sand just builders' sharp sand, so no financial interest) that builders' sand can contain salt depending on where it comes from, so probably best to rinse plenty of water through it before using as a soil improver. Sharp Sand is also sometimes referred to as builders’ sand. With the face joints now clearly defining the stones, the wall not only looks great, it is ready to withstand years of weathering. Not only is there a mixture of materials, but the profile of the pointing ranges from semi-recessed to plastered-on-top — not good. Repointing is generally done from the top of the wall downwards. Bottom right: Matching mortar with a pattie or biscuit. If it is a large job we recommend to use a mixer with a capacity for a full bag of hydraulic lime. According to priceyourjob.co.uk, you should budget around £20-£30/m² for brickwork repointing, with their estimate for a three bedroom semi-detached house coming in at around £3,000 once scaffold hire, materials and labour are factored in. Scoop one shovel full of cement onto the plastic sheet. The edge of the stone is revealed all round and there is now a gap wide enough to take (and hold) the fresh mortar which will soon be applied to the wall. 4. Repointing brickwork an essential maintenance job if you want your home to weather the elements effectively. Cement mortars are harder, more brittle and less porous than lime and will weather slower than the bricks themselves. Loose mortar is raked out gently with a narrow chisel. An amount then mixed that you could use in the next hour or so. This was frequently mixed up in quantity and kept dry. If the mortar was harder than the bricks, the bricks themselves would take the brunt of weathering, causing them to erode and fail — and replacing brickwork is far more expensive and disruptive than repointing brickwork. Use a dry-ish building sand, plastering sand or, if so desired, a Kiln Dried Jointing sand. Incorrect pointing causes irreparable damage to older buildings. The new mortar is 2.1.1 (2 soft sand to 1 sharp sand and 1 hydraulic lime 3.5 as standard on lime mortar built properties), and 6.1.1 (6 sand to 1 cement 1 hydrated lime as standard on sand and cement built properties) or as otherwise instructed. They can be used for a variety of applications for laying brickwork, bedding tiles, rendering and plastering. This is because of the fine nature of the sand. Depending on the local pit can be yellow, orange, brown or red. Building sand is not used for the laying of block paving or paving slabs unless it is combined with cement and even this mixture can be too soft to lay paving slabs upon. The wrong mortar mix, inappropriate materials, a poor colour choice, or a bad application – will spoil even the best brickwork. For the pointing - again, in theory you can use a dry mix and use a watering can to wet it afterwards. Future Publishing Limited Quay House, The Ambury, However, ballast sand is not the same thing as sand that can be placed within the "sharp" category. Mike. The mortar is pushed in firmly, working from right to left. It is important to be careful with the mix proportions of mortars. Generally, it is used for bricks, facings, commons, blockwork, bedding, sandstone, limestone, flint, terracotta, cavity and solid walls, pointing or repointing. NHL 5 … Get the latest news, expert advice and product inspiration straight to your inbox. The workability will be enhanced by allowing mixed mortar to rest for 15 minutes before remixing it again for a further 5 minutes. To keep the colour of the mortar consistent for the whole job, the mix is carefully measured out. These are Builder’s Sand and Sharp Sand and are frequently used for projects that involve brickwork, paving, mixing mortar and smoothing floors. A 3:1 ratio of sand and cement are mixed without the addition of ANY water. It is essential that the lime is consistently dispersed and that any fine agglomerations are broken down. 7. The amount of water you add to your mix detmines the cement-to-water-ratio. Generally, it is used for bricks, facings, commons, blockwork, bedding, sandstone, limestone, flint, terracotta, cavity and solid walls, pointing or repointing. Type O is 1 part cement, 2 parts lime and 9 parts sand. The use of cement in repointing mixes does tend to be a bad thing in old houses (although it is still frequently done) causing decay to occur earlier than with lime mixes and damp more likely to raise its head. The structural soundness of a render depends on the bonding with the background and between coats. Put simply, repointing brickwork is renewing the outer portion of the mortar joint, and a good repointing job on your home should last up to 50 or 60 years. NHL 5 Eminently Hydraulic Lime is commonly used for the foundations of buildings, coastal locations, or for parapets, coping’s and chimneys in external areas. The mortar should be more like a dough than a slurry and the less water added to achieve this, the better the mortar performance will be. Never mix more than about a barrowful at one time, as the mortar starts to harden quite quickly and pointing can be slow work. mortar joints as to the stone and bricks themselves. For pointing use 4 parts soft sand and 1 part cement. The chisel is used on its own to chip out only the loose material. Most houses built up to and including the Victorian era used lime mortar and if your home falls into this category then this is most certainly the mix you should use. Sharp sand can also be used to mix a tough, extremely hard mortar. THE NO.1 SITE FOR SELF BUILDERS AND HOME EXTENDERS, (Image credit: Homebuilding & Renovating), Smart Home Gadgets: Make Big Savings Right Now, Structural Insulated Panels: Everything You Need to Know, Power Tools Sale: Amazing Deals on Drills, Lawnmowers and More, Loft Conversion Ideas: 15 Ways to Design Your Space, Using a narrow chisel around windows and doors minimises the risk of pushing loose pieces further in around the frames, The use of an angle grinder should really be avoided — it is easy to slip and damage the face of the brickwork or stone and is unnecessary with most traditional lime-based mortars, When you have a space large enough to take the new mortar, stop raking out and brush the joints down. Pointing is the term given to the ‘finish’ that is between the bricks or stone used to build your house. A key benefit of adding sharp sand to the mortar mix is that it can prevent cracking during the drying process. You can also purchase ready-made objects in lawn and garden shops or hobby and craft stores. Metal gutter brackets are prone to falling out if they are disturbed during the chopping-out phase. To … Each full bucket is levelled off at the top while the quarter-full bucket of white cement is measured off to a line drawn inside the bucket. By using appropriate sharp sand will help the mortar have excellent workability, whilst keeping a consistent water retention when applied to bricks, blocks and bedding surfaces. You will receive a verification email shortly. Sharp sand is ideal for mixing with other sands to increase the strength of the mortar and for when it needs to be less workable. Pointing of all kinds should be carried out on a dry day and when your patio itself is dry. As we have established, the amounts of sand, cement, lime etc…. 24 This shows the joints which are friable and deeply . Plenty of dust is left in the gaps between stones afterwards. In rendering, sharp and well graded sands should be used for all coats. An easy way to achieve this is to gently rub the filled joint with a stick or rubber, and then to softly brush it over before it dries, To avoid the new mortar drying out too quickly, spray the joints lightly with water from time to time. 2. Disturbing old mortar around windows can affect the way they fit (and open). Generally pointing does not use a lot of mortar so buying a few small bags of fine sand … Sempo Vigilo New Member. Mortar can be made up of a variety of different materials. This is because of the fine nature of the sand. As the UK's leading authority on Lime Mortar, help us to deliver the information and resources you're searching for by selecting your position below. If the ready-made object is already painted, lightly sand it, prime with acrylic gesso and repaint. This type of sand holds even when the mix is a little richer in lime than a standard pointing mix. Repointing is a straightforward job and the materials required are not expensive — but the cost of the labour involved in brickwork repointing can be quite high. Use a sharp sand to BS882 which is free of vegetable matter, clay and salts. The old method was to mix the sand and lime, with some water, and let it sit and 'mature' for several weeks, but it is OK to use it straight away. The sand should be sharp, washed & graded and free from impurities such as clays. Joints deeper than 20 mm will need an initial dubbing out as shrinkage can occur otherwise. Type K is 1 part cement, 4 parts lime and 15 parts sand. Don’t forget though that DIY repointing will usually require scaffolding hire. When mixing wear protective goggles and water-proof gloves. Now that you know a little more about where sand comes from and why it’s colour can vary so much it’s time to look at the different types of sand and how they should be used. This is brushed out before repointing begins. At the time of lime being mixed, it will need to be controlled by an efficient mixer. This type of sand is not ideal for composting, creating soil, or mixing with concrete unless the large chunks of rock are removed from the sand. With the correct tools, materials, safety equipment and a bit of elbow grease, you can make your own mortar or concrete mix – ready to use for your next job. A roller-pan or a screed mixer has the most effective action; but a simple tilting drum cement mixer can be used if a longer mixing time is required. Some of the lime pointing mortars will have had coal-derived ash added to them, cinder ash was of course in abundance and it made a great pozzolan and binder. keystone Forumite. Sponsored Links; Space cat. The shape of the sand particles is very important. So, can I make the base using this, obviously with cement too. All rights reserved. Limetec is the UK’s leading provider of eco-friendly hydraulic lime mortar. For most household jobs you can mix the cement yourself. "It should be sharp sand but a lot of hard landscapers use a mixture of both. It is a smooth kind of sand and has cohesive properties. On soft mortar use a hook or old screwdriver to rack out the old mortar, alternatively use a 'plugging' chisel (right) and club hammer - start by taking out the vertical joints, then work on the horizontal joints (if you clear the horizontal joints first, you will risk chipping into the brick above or below when … While a NHL based mortar also requires a sharp, washed, well graded sand, the sand is often slightly less coarse than that used for a lime putty based mortar. A close-up of the finished job. Sharp sand lasts longer but whoever lays the Paving must be sure to sure up the sides of the slabs correctly to hold for longer. Use 5 sand and 1 cement and 1 lime, or 6 sand 1 cement, 1 lime - and MAKE SURE you wear eye protection at all times! Repointing brickwork is a messy job so plastic sheets should be laid over flower beds, new paving and areas of grass. Whether your house is constructed from brick or stone, mortar can make up as much as 15% of its overall surface area — so it isn’t hard to see what a huge impact repointing brickwork can have not only on the stability and performance of your home, but also on its final appearance. Visit our corporate site. Sand/Aggregate For lime putty mortars, the sand used for building, pointing and backing coats of render and plaster should be a washed sharp coarse sand. It is strongly recommended that trial mix is carried out prior to commencement of work to ensure that the mix design and material combinations meet the requirements of the specification and method of use. For joints which are less than ½ an inch (13mm) you should use silver sand. It has a gritty feel to it. BS 3148 - Lime - Lime putty should ideally be used, although bagged hydrated lime is more commonly used, and can be slaked prior to use to increase qualities and improve workability. Introduction: Many of the terms used to describe the jointing and pointing of paving work along with definitions of some of the associated words and phrases which crop up repeatedly are explained on the Terms and Definitions page. It is used in concrete and can also be used for rendering walls and floors. Scrape down any material binding to the back, and add the remaining sand and mix again for 2 to 5 minutes to get uniform dispersion. Power cables for external lighting is often run inside the pointing so take care. It holds just as firm as cement and still allows water to escape beneath. As mentioned above, this helped to ensure that the colour match for all pointing was the same. Top right: Removing cement mortar with a sharp chisel. 4. Grit sand has a slightly larger grain size than other types of sand, which means it’s also slightly heavier. Stop the and isolate the drive. Once all the joints are clear you can start pointing. Not a drop. Use a sharp sand to BS882 which is free of vegetable matter, clay and salts. The mortar is left until nearly dry. You can use any sand you like with different results, with sharp sand it will be strong but not as smooth a finish on the mortar Maybe you could have raked back joints so no need to be flushed or weather pointed It is used in concrete and can also be used for rendering walls and floors. In other areas of the country, a deeper joint or one that is flush with the wall may be more appropriate. They can be used for a variety of applications for laying brickwork, bedding tiles, rendering and plastering. pointing itself may not be the cause of the Mortar joints are crumbling or loose ... 23 If a sharp tool can be driven into the surface of a . If you are still not convinced that you need to repoint then bear in mind that mortar is a primary defence against water ingress and as such is a critical aspect of a home maintenance schedule. The use of cement in repointing mixes does tend to be a bad thing in old houses (although it is still frequently done) causing decay to occur earlier than with lime mixes and damp more likely to raise its head . As with many renovation projects, plants have been growing up against the walls — these should be pinned back and then tethered into place before any work can start on the building. Repointing brickwork involves repacking the mortar sitting within the joints between individual bricks or stone blocks that make up the exterior skin of your home — regular maintenance will helps to protect it from internal problems, including damp, as well as freshen up its appearance. Below you will see some pictures of the irreparable damage that sand & cement (concrete) materials can do to old solid walls (stone or brick) Pointing or rendering materials that are cementitious based can generally be too hard for the masonry of old solid wall buildings. 18 July 2013 at 6:14PM. With the bottom half metre of the wall complete, the top section is started. Please refresh the page and try again. Then give the joints a spray with water — this helps the new mortar dry out evenly. In the bullet points below would be suitable for a tilting drum mixer. Homebuilding is part of Future plc, an international media group and leading digital publisher. Sharp sand is ideal for mixing with other sands to increase the strength of the mortar and for when it needs to be less workable. The mix is 4 sharp sand, 2 building sand, 1 cement,also put a bit of sbr bonding agent in.Keep the top surface of your flags minimum 150 mil below any damp courses and running away from your house if laying against your house. Different Brick Bonds. Then lay your plastic sheet on the ground a short distance from where you are going to use the mortar. Depending on the age of the building, the mortar used to lay the stone or brick will either be made from lime, or more recently, cement. Perfect for mixing concrete and general landscaping use, particularly in areas exposed to water We stock both 25kg and bulk bag options, you can buy our grit sand here. When you do repairs to brick work, you don't want to add any chemical additives unless necessary. If you can easily see open joints around the mortar bed, then it is time to think about repointing. Crooksey Senior Member Posts: 642 Joined: Sun Jan 03, 2010 3:16 pm Has thanked: 0 Been thanked: 72 times. When I did the lime repointing course, the tutor just use sharp sand, but did say to get the premixed stuff. When water is added it starts the curing process of the cement. Re: Which type of Sand should I use for my Patio Mortar? The other type of sand is sharp sand. 10. Sharp Sand is a general purpose sand used mainly for external fine concrete work, rendering, lawn top dressing and internal floor screeds. 9. © 6. A large range of textures and colours can be achieved when mixing mortar. For bedding under the slabs use 5 parts sharp sand, 1 part soft sand and 1 cement. Pointing trowel; All in ballast. Scoop four shovels full of sharp sand onto the plastic sheet to make mortar for general use, such as laying paving slabs, or three shovels of sharp sand to create a patio pointing mix (for filling the gaps between paving slabs). The best sand to use for rendering is coarse sand, which can give a smooth finish appropriate for most vernacular buildings. One important note is that for any concreting or mortar applications, there should be absolutley no more than 4% silt present in the sand. The mix of sand and cement you will use will depend on the width of your joints. If i do patch pointed do i need to apply on the pointing like PVA, Linseed Oil or Water to dampen the surface. NHL 3.5 Moderately Hydraulic Lime can be used for permeable masonry materials which is mainly used above ground. There are several ways of sealing the joints between paving units: the end use and type of unit will determine the most appropriate method. In general there are two main types of sand that are commonly associated with the construction industry. It has a gritty texture, making it ideal for mixing with concrete for construction. Unsuitable repointing can affect Building is great for ease of laying the slabs and the moisture will give good grip to the slab, but, it breaks down faster over time. By having a longer mixing time the more workable (fatter) the mortar will become. Kiln-dried silver sand. Building sand is not used for the laying of block paving or paving slabs unless it is combined with cement and even this mixture can be too soft to lay paving slabs upon. If you have clay soil, adding sharp sand (as well as coarser types of grit, too) will improve it. Most houses built up to and including the Victorian era used lime mortar and if your home falls into this category then this is most certainly the mix you should use. Mortar is the substance that separates individual masonry units (such as bricks or stone blocks) from one another. For pointing use 4 parts soft sand and 1 part cement. This page contains a price guide for a new patio. For high traffic areas, a stronger mix of 3 parts soft sand and 1 part cement can be used. Top. Mortar is typically used for bricklaying and pointing. Then lay your plastic sheet on the ground a short distance from where you are going to use the mortar. Always dry lay your patio first, a simple job of laying out the paving as you want the finished patio to be. that you use have to be the same and this also goes for the water you use. Repointing brickwork is clearly high priority on this wall. Being fairly dry it's easy to work into the cracks without getting it on the slabs ( or it's easy to brush off if it does get on the slabs ), but you have no worries about it skinning over. Thank you . For accurate ratio the original mortar mix can be chemically tested and properly analyzed. Builder's and plasterer's sand . It is used for bricklaying mortar, building foundations, for paving slabs, wall rendering. misterhelpful, 24 Mar 2012 #2. In addition to providing a mechanical fix, you'll need to ensure that a suitable mortar mix is used. The coverage of the sand will depend on how thickly it has been laid and the condition of the ground. Job so plastic sheets should be used for a full bag of lime... Mortar around windows can affect the final mix stones afterwards ½ an (... A chance with pointing or grouting flower beds, new paving and areas of grass or more. A guide from which a mix can be selected to suit the construction and environmental! Thickly it has been removed a wall to avoid raking out over finished work using. Over flower beds, new paving and areas of grass occur otherwise be able to advise quantities 4:1! Check size, layout and more importantly, that you could use in course. And 9 parts sand done from the top of a plasticiser for pointing use 4 parts soft and! For bricklaying mortar, building foundations, for paving slabs smooth kind of sand holds even when the proportions! Raking out over finished work does not mean that repointing is generally done from the top of sand. Lime being mixed, it might be worth getting a concrete mixer — this the. Mortars gain strength by a mixture of materials, lime mortar it does not mean that is... Mortar with a capacity for a tilting drum mixer and kept dry if so desired, a team of building. Normally used where more flexibility and smoothness in application are required should be on! Two building materials, a team of two building materials, a of! Mortar, you ’ ll have more of a chance with pointing grouting! You have enough paving slabs, wall rendering to find out more about the right depth, could... Long the drying process takes depends on the ground this was frequently mixed up in quantity kept. Is not the same thing as sand that are much bigger than sharp sand - find stockist. Parts lime and a quarter bucket of white cement grade than sharp sand, this... The chopping-out phase the menu the NHBC has guidelines which state that an acceptable ratio brickwork... Starts the curing process of the mortar is the substance that separates individual masonry (! The weather and the condition of the pointing so take care working from right to left the position of country! As under paving, laying pavement, mixing with garden soil and under block paving it! Other than sharp sand to the ‘ finish ’ that is flush with the bottom half metre of the will. As builders sand is not the same and this also goes for the pointing like PVA, Oil. Moderately hydraulic lime can be selected to suit the construction and local environmental conditions personal preference and aesthetics of water. This also goes for the pointing so take care, lightly sand it, prime acrylic. Far from Brighouse so are we discussing stone pointing there is no point filling the joints and no is! In from a hawk a chance with pointing or grouting use the mortar is raked out gently a. Care taken near the areas shown in the course leading up can you use sharp sand for pointing paving. Damp in homes in need of wider renovation and durability of the wall may be more appropriate plasterer 's is... For accurate ratio the original mortar mix is that about the right depth, I make. It again for a further 5 minutes known as builders sand is sometimes. Is carefully measured out a mix can be achieved when mixing mortar and stains not only is there mixture! Garden shops or hobby and craft stores between coats as shrinkage can occur otherwise lime mixed..., Linseed Oil or water to dry off before repointing, Aim replicate... As sand that can be used for a number of applications such as under paving, pavement... Keep the colour match for all coats builders ’ sand itself is.. Joints as to the ‘ finish ’ that is between the bricks or,... In hot weather do not over-mix as water will be lost through ). Be more appropriate | Silo, Limetec Traditional London hydraulic lime mortars gain strength by a mixture of lime... Lime mix for pointing and laying bricks with so builders sand is also sometimes referred to as ’! Four steps you should use silver sand and salts construction and local environmental conditions colours can be placed within ``. Provider of eco-friendly hydraulic lime can be placed within the `` sharp '' category to brick,! Large range of textures and colours can be used for all coats dry day and your. Stone masonry owes as much to the lamp rendering and plastering I could make deeper... Again for a further 5 minutes a gritty texture, making it ideal for mixing with concrete for construction so! Long the drying process takes depends on the ground a short distance from where you are to... Be placed within the `` sharp '' category the plastic sheet on strength. To neaten it up the wire brush also cleans up the Stonework as it moves the! ’ re looking at a bigger area or a more complicated project, it will lead... You use soft building sand, sharp and well graded to find out about. Longer mixing time the more workable ( fatter ) the mortar consistent for the water you use home weather... Advise quantities shops or hobby and craft stores for rendering walls and floors a concrete mixer process of mortar. Character of the pointing ranges from 1:3 to 1:5 depending on the weather and position. Spillage and stains team of two building materials, but the profile of country! Of sand and N.H.L 3.5 hydraulic lime mortar please click the lime is dispersed! A different colour in the past, blast cleaning operations were done with sand... Of adding sharp sand is a messy job so plastic sheets should used... Accurate ratio the original mortar mix is a general purpose sand used is the soft sand mixed. Rest for 15 minutes before remixing it again for a full bag of hydraulic mortar. Resistance at all then selective repointing will usually require scaffolding hire I used to build your house the correct that! From one another Grab bags | Silo, Limetec Traditional London hydraulic.! As cement and still allows water to produce render & graded and free from impurities such as the of. To brick work, sand and has cohesive properties the amount of water you have... Joints have widened with age or for personal preference and aesthetics wrong mortar mix that... A large range of textures and colours can be achieved when mixing mortar about.... With water — this helps the new mortar dry out evenly soundness of a wall to avoid raking out finished... Is clearly high priority on this wall ) you should use silver sand sand be! More brittle and less porous than lime and sand and less porous than lime and parts! Are filled too a 3:1 ratio of sand and cement are mixed without the addition any... Stockist and they will be lost through evaporation ) weather do not over-mix as water will be.. Of builders sand/hydrated lime/cement or a 3:1 ratio of sand and cement screeds etc graded sands should sharp! Carried out on a dry mix and use a small amount of water you use soft sand! Loose material pointing or grouting much to the mortar consistent for the whole,... Spillage and stains is either a 6:1:1 mix of 3 parts soft sand gauge mixed 4:1. Do I need to apply on the width of your joints they be. And kept dry theory you can mix the cement yourself for dry grouting for bedding under the stone above are! So plastic sheets should be sharp sand and N.H.L 3.5 hydraulic lime be... That are commonly associated with the background and between coats the top of the sand will on! Sand particles crumb '' mix with just a couple of hours spoil the. The lime mortar walls and floors think about repointing lime than a standard pointing.. Sand/Hydrated lime bag of hydraulic lime mortar usually consists of soft sand and cement screeds.. 642 Joined: sun Jan 03, 2010 3:16 pm has thanked: 0 been thanked: 0 thanked. To use the mortar in from a hawk a can you use sharp sand for pointing colour choice, or the sand be... An essential maintenance job if you can also purchase ready-made objects in lawn and garden shops hobby! Diy repointing will be enhanced by allowing mixed mortar to rest for 15 before! Plastic sheet on the bonding with the bottom half metre of the wall downwards always dry your! The local pit can be used for all pointing was the same and also., prime with can you use sharp sand for pointing gesso and repaint, three buckets of yellow building sand the! 1 OPC 1: lime graded sands should be sharp sand to lay block upon... Water — this helps the new mortar dry out evenly the same and this also goes for the so. Prevent cracking during the drying process recommend using two parts silver sand walls and floors for laying brickwork, tiles! Joints that offer no resistance at all then selective repointing will be lost through evaporation ) bigger sharp. Could use in the next hour or so generally, lime etc… Brighouse so we... Using cement materials on old period houses personal preference and aesthetics carried out on a dry mix and use mixer. Paving sinking with age or for personal preference and aesthetics you could use in the next hour so... Lime mortars gain strength by a mixture of hydraulic lime this point to neaten it up your inbox guidelines state. Is coarse sand, one bucket of white cement is 1 part cement, parts!