This can include existing plaster, concrete, painted surfaces and even extremely smooth surfaces such as glazed tiles. Different squares and their uses, Can a cabinet maker become a carpenter? It provides an improved key to backgrounds such as concrete, plaster and tiles, and contains a fine aggregate that is coloured blue to allow for the easy identification of covered areas. I think these days it's a no brainer to use blue grit. Plastering is considered an art form by many, requiring expert precision and finesse to achieve the perfect finish, something which can only be achieved if the correct surface preparation is carried out beforehand. innovation project management; speech about being a mother; ey human resources contact; Hello world! Searching for more product information and handy DIY how tos? Dont miss our BC Profileshelp and advice page. The first coat of plaster acts like the base for the second, so the objective is simply for the application to be a flat foundation. Blue grit generally takes around 24 hours to dry, however, the drying time can vary depending on the environment that the application is taking place in. Many people are unaware of how to apply Blue Grit; thankfully, its pretty straightforward. The idea is to apply the second coat after smoothing out any lumps or bumps with a trowel, finessing the corners and ends where the wall meets a join or door. If 1970 artex it should be sugary to look at. Discussion in 'Other Trades Talk' started by fff, Sep 17, 2020. You may experience some splashing during the application, so its a good idea to protect surrounding surfaces too. You should only need to apply one coat, so once it has dried it you are good to go! DIY Plastering - Plastering Help - DIY Plastering; Blue Grit - before or after taping . You must log in or register to reply here. Blue grit is a plaster bonding agent, which can be applied to smoother surfaces, in order to create a better background for skimming. We are passionate about the products we produce, we have always worked on the simple premise that Trade User will only come back for good products, so that's all we make! When this coat has set, you can scratch the surface with a wire brush to key the plaster to prepare it for the topcoat or finish plaster. Another benefit of Febond Blue Grit is that it is plastered over once dry, usually after around 6 hours, taking the guesswork out of drying times associated with traditional PVA methods. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. A skim coat is the final application and glides over the top to provide a smooth, dent-free surface that is perfectly even and ready for painting. However, a caveat exists if you're skimming onto plasterboard. Just everyone in general. Harder to apply. The idea is to apply the second coat after smoothing out any lumps or bumps with a trowel, finessing the corners and ends where the wall meets a join or door. Blue Grit is equipped with a fine aggregate, composed of sand and crushed stone, meaning it is well cut out for enhanced grip. Since 1992, Pay in interest-free installment with Klarna, All the Latest News, Products & Special Offers. Blue grit helps plaster stay on the wall, and big cracks need taping yes. With the popularity of bonding agents increasing, theres now no excuse for anything but perfect plastering! is a much tougher question than what's the difference between fission and fusion What a star is, is incomprehensible to most of us. Like it's mixed with sugar in and a bit sharp and hard. How long can you leave blue grit before plastering? However, the colour does make it easy to identify where you have already applied it. Extensive range of high-quality products since 1992, If youre unfamiliar with the properties of. Usually, we talk about the importance of letting plaster dry out right back to the plasterboard or brickwork, as it's necessary to leave sufficient time before you try painting or working with an absorbent plaster surface. Extensive range of high-quality products since 1992 (The thread he posted on}. And that worried me because when i pulled some tape off the ceiling it did take a paint layer with it. Every plaster wall will be set at a different rate. Large walls that won't give you enough time before the second coat becomes necessary can also be plastered in stages - with a skim coat at the end to ensure there isn't any difference between each section. Apply using a short pile roller or brush to give an even coating. Just wondering do you know if I do it with the engine running or off? Blue grit helps plaster stay on the wall, and big cracks need taping yes. OR, would I apply the Mapei Plaster Primer first, and then the Blue Grit on top? The information that they store is not sent to any third parties, and they are used only to communicate with Shopify for the purposes of user authentication, form validation/security, and basic web application operations. As we've seen, your first plaster coat needn't be left to dry too much before you apply the second layer. I'm planning on changing my head gasket tomorrow. Having the option of leaving these tiles in place is a solution which is welcomed by many in the trade however it should be remembered that tiles cannot be directly applied to the bonding agent so it is essential that the surface is skimmed before any further work takes place. Read the full article here >> Read more, How To Choose the Correct Paint Sheen for Your Project Choosing the Correct Paint Sheen for Your Project Choosing paint sheen is as much about personal preference as it is about the amount of wear and tear the painted surface Read more, 113, Kestrel House, Knightrider St, Maidstone ME15 6LU, Factors That Influence How Long You Should Wait Between Plaster Coats, Other Considerations for Achieving a Perfect Plaster Finish, The Benefits of Preventing Plaster From Completely Drying Before the Next Coat. Asbestos was a cheap binder in artex. Using this tip, saves you money, makes it easier to use the product, enables you to plaster on the same day. It requires thicker plaster to cover the blue grit. The website is built using Shopify. However, it is drying as you skim plaster, so occasionally it can dry out before you finish. Additionally, the blue coating helps to indicate which areas have already been covered for your convenience. Blue Grit is a grip coat, used by plasterers as a high-performance bonding agent for smooth surfaces. To learn more, please see our Privacy & Cookies Policy. Shopifys default cookies dont collect any personal or sensitive information or IP addresses. May 22, 2022 | In best taco salad recipe | . Every Tuesday Ill bring you tutorials, tool reviews and vlogs all about plastering.My names Anthony and Im a third generation plasterer from Prestatyn in North Wales. You can test if the plaster is dry by tapping on it with your fingernail, and listening for a solid thud. It definitely has its pros and cons, but there are definitely situations where Blue Grit is the best choice for bonding your walls prior to plastering. phone tapit tape someware in monacho I think, Surely common sense tells you the answer.I dont get a lot of questions on here cos surely just thinking the process through would answer it for you. Blue grit generally takes around 24 hours to dry, however, the drying time can vary depending on the environment that the application is taking place in. The very first thing you need to do when painting new plaster is to let it dry. He would use blue grit before he plasters, He then went on to say that if people don't put blue grit on the plaster will more likely feel hollow and pop off, As long as none of that is blown then tape it and skim it, personally Ive only use blue grit a few times over artex and didnt really see the need for the extra day on the job when I could of just pva and skimmed it. You are using an out of date browser. Need a thorough hardwood floor refinishing for your old house in Chesapeake, VA? The application will dry in patches, and once it's a uniform pale pink shade across the area, it's dried through. Im hiring them for my bathroom as well! Its bright blue, this means you know exactly where it has been applied. If I see that sugary look heads upomg.. Asbestos maybe, The way this years going I think if the ceiling falls down it will be the least of my problems ha. It is quite expensive at around 30 for 10 litres. Contact us today at (757) 255-5191! Our hardwood floor repair and refinishing services are affordable and competitive in the Chesapeake, VA area, and we are also happy to offer our customers different specials and discounts. Prior to applying concrete, paint, plaster and tiles onto smooth surfaces, Blue Grit is used as a grip coat to even out the surface as well as provide an improved key for bonding. If you feel any give or hear hollow sounds when testing then the plaster hasn't dried yet and needs more time before painting over it. A single layer of plaster is rarely recommended and most often used when someone wants to carry out a quick touch up as a DIY project to repair a small crack or bumpy layer on their internal wall. Planning to blue grit the ceiling before skimming. In that case, there's a risk of forming a layer and discouraging proper water absorption, potentially locking in dampness in the original plaster coat that won't set properly. Ian1980, Sep 17, 2020 #5 fff likes this. #1. On average it takes about one-two weeks for plaster to fully cure. Technical information? However, suppose the plaster is still wet. If the current plaster is hollow I dont see how blue grit can change that. If you're plastering a large area, the initial spaces will start drying before you've finished the work, so you'll inevitably need to progress to step two quickly. #plastering #bluegrit #plasterprimerHi Everyone, Welcome to my channel! To Strip or Not to Strip: Painting over wallpaper. This will allow it to achieve maximum adhesion to the sub surface. That way I can feel superior about really insignificant stuff. March 20, 2014 at 5:12 pm. You know. Now there are a wide range of plaster bonding agents on the market which can speed up the preparation time and provide the perfect key to all surfaces; even the more problematic ones. Feb Febond Blue Grit is coloured blue to help avoid missing any areas. The manufacturer states that it should not be used in temperatures under 5c, as this will stop it from drying correctly. Another way is to sbr and let it dry then Pva and plaster when sticky.. Thats true, its like the saying "a chain is only as strong as its weakest link". With that said, at a standard room temperature, Blue Grit will be dry within one day. Plaster is highly porous and sucks in moisture, so if youre struggling with plaster that's dried faster than expected, wetting the wall can help - when the water starts running down the wall, you've got sufficient water to control the suction. My power tools Makita 18v multi-tool https://amzn.to/3sFGDAYMy mixer - Makita dut130z https://amzn.to/3CfCoz1Makita USB charger https://amzn.to/3vBBzPNMy main toolsMarshalltown 14inch pre warn trowel https://amzn.to/378dJRPSpeedskim https://amzn.to/3tsr6U9Speed skim steel flex https://amzn.to/3sIth76Refina plaxiflex plastic trowel https://amzn.to/3Keg8bKOx handboard https://amzn.to/35PEKJ5Extras that I use Blue grit https://amzn.to/3sFO1fGRoll and stroll carpet protector https://amzn.to/34hDUEsEazymix halftime https://amzn.to/3hIgk6VEazymix extra time https://amzn.to/3HIbrFm Blue grit is applied with either a paint brush or a short pile roller. Want your kitchen flooring done the right way? Continue with Recommended Cookies. Extensive range of high-quality products since 1992 If nothing else it will be practice skimming but it will probably be alright if the paint isnt peeling away on its own. The comment about ceiling falling down with the paint made me rethink. Bang on the plaster now or 8 weeks time no problem. It will be better to remove the wallpaper first, then apply plaster. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Feb Febond Blue Grit is coloured blue to help avoid missing any areas. Just that someone on here said whatever plaster I put on the ceiling will only be stuck to the last coat of paint used on the ceiling. How to reduce it, Apprentice carpenters tool list Essential tools for your new job, What is a carpenters square? I'm off now to tell people only advanced questions are allowed from now on right? 'Febond Blue Grit has the additional benefit that it is plastered over when dry, taking the guess work out of drying times associated with PVA'. Use on plaster, concrete, ceramic tiles and painted or textured surfaces. Often, the first plaster coat does become too firm. Due to the plaster shortage, i am likely to not get hold of multifinish for a few weeks. This can be done in several ways including using meshing, abrading the surface or adding sand to the PVA mix, all of which can be incredibly messy and time consuming. And vice versa. The DIY Fix is reader supported. On smooth, non-porous substrates such as glazed tiles and concrete, further preparation is needed as the surfaces required a key for the plaster to adhere to. Plastering is a delicate art, and if you're applying two coats together, you'll normally need to wait about 20 minutes to let the surface of the first layer dry just slightly. I tape then glue. whether it is PVA or grit. trying to get tape on after is always impossible, Thistle bond it not blue grit ( unless blue grit has been massively improved). You can find out more and learn about how to withdraw your consent at any time, by clicking here: Privacy & Cookies Policy. Whilst it isnt that thick it will add an extra 1-2mm to the original surface. But anyway I think we're going off piste. Make use of our years of industry experience with access to our expert How-To Guides. Blue Grit is chiefly used to create a smooth surface, this aids with applying the likes of concrete, paint, plaster and tiles onto walls. Protect adjacent surfaces from splashes and remove any Feb Febond Blue Grit before drying with warm soapy water. or if you are doing it yourself you can find suppliers local to you. It may not display this or other websites correctly. How Long Does Skimmed Plaster Take to Dry? This is a DIY forum. It doesn't matter if there are minor ridges or trowel marks since you can easily knock back bumps into the firmer plaster as it dries out. The first disadvantage that many people mention, is actually the drying time. Save some money and do that yourself and just get the plasterer in to skim over it. You done that ceiling yet? (You must log in or sign up to reply here. For a better experience, please enable JavaScript in your browser before proceeding. I know this isn't the intended use but I wondered if I could go over the wall with blue grit and then masonry paint on top of the blue grit, hoping the blue grit would adhere and also provide a key for the paint. Manage Settings Plastering Basics - New to plastering? Skimming is the process of laying a thinner layer on top of the first, and you can usually start work on the next phase pretty quickly, but the timing is everything! should blue grit the ceiling, then tape the joints or the other way round? By clicking ACCEPT, you agree to such purposes. Simply applied straight from the tub with a short pile roller or brush, Febond Blue Grit is quickly applied to internal surfaces and requires just one coat, with the blue colouring helping to ensure a good and consistent coverage has been applied. #shorts Blue Grit is a grip coat, used by plasterers as a high-performance bonding agent for smooth surfaces. u/DryPanda8965 Anyone every asking a question I deem to be basic, I won't tell them. Two coats of plaster are the standard since it gives the best finish - one coat is often a little bumpy and uneven. Hi, I have patched a few holes in my artex ceiling, removed 5cm or artex around the edge to get a smooth area to join tape. You can find out more and learn about how to withdraw your consent at any time, by clicking here: Privacy & Cookies Policy. It is quite thick, so not the easiest product to work with. These guys did a great job, they turned my old wooden floors into brand new ones, and they were also very friendly, careful, and cleaned up perfectly after themselves. These types of products are ideal for repair, maintenance and improvement projects where difficult surfaces are likely to be encountered and are a perfect solution in tiled bathroom or kitchen areas where the removing of old tiles could cause costly damage to the existing wall behind. The problem is that you'll need to fill those blisters and factor in the appropriate drying time before you can paint the wall. It won't glide on as well as it would have on semi-dried plaster, but with some attention to detail, you can usually create a flat surface. The Blue Grit, just makes life that little bit easier. Once applied, Blue Grit takes roughly 24 hours to completely dry. Does plastering cause condensation? Buy decent scrim though none of that b&q shite. Use on plaster, concrete, ceramic tiles and painted or textured surfaces One-coat application - coloured blue to indicate coverage Provides a coverage of approximately 4-5m per litre Allow to dry thoroughly for a minimum of 24 hours before applying plaster Suitable for interior use only Technical Specification Delivery details It's also worth looking at the type of plasterwork you're undertaking - re-skim and backing coats applied over old plaster can experience high suction rates. You should be ok leaving it 8 weeks before skimming but a coat of pva or even better sbr would be worth it, just make sure to let it dry at least until it is tacky. This primer/sealer is a high performance plasterers' gripcoat. We have built our reputation by being customer-friendly, always on time, and absolutely reliable in guaranteeing your satisfaction and exceeding your expectations. Applying a second coat on fully dried plaster leads to blistering - most common in well-ventilated spaces. The website is built using Shopify. Allow to dry thoroughly before applying plaster (usu-ally 24 hours minimum). We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. However, fluctuations in temperature may yield different results, for instance, the drying time may take a little longer in lower temperatures, or Blue Grit may dry sooner if the surrounding atmosphere is warmer. May 13, 2018. The second issue some people have with Blue Grit, is the extra price. https://www.diyplastering.co.uk/Plaster-drying.html, https://www.diyplastering.co.uk/maximum-time-interval-limits-between-coats-when-skimming.html, https://www.diyplastering.co.uk/2nd-coat-of-plaster.html, https://www.ableskills.co.uk/blog/tutorials/how-to-apply-your-second-coat-of-plaster/, https://askinglot.com/how-long-do-you-wait-between-coats-of-plaster, https://www.plasterersforum.com/threads/time-between-1st-and-2nd-skim-coat.44263/, https://findanyanswer.com/how-long-do-you-leave-plaster-between-coats, https://www.mybuilder.com/questions/v/34221/plastering-a-large-area-how-do-i-do-both-coats-in-time-before-the-plaster-starts-to-go-off, https://www.seniorcare2share.com/do-i-need-to-pva-between-coats-of-plaster/. Otherwise, the plaster won't be able to stick to the surface strongly. 5% DISCOUNT AWAITS FOR A THOUSAND SQUARE FOOT AND ABOVE FLOORING SERVICES, FOR JOBS OVER 1500 SQUARE FEET, THE DISCOUNT STARTS AT 7% OFF, Get exceptional quality with professional service!Call now: (757) 488-3045, We Offer Insurance Works For Flooring and Government And Commercial Flooring Services, We Are Hiring / Make sure you have a valid drivers license / Contact number to call: Joe (757) 672-2477. This means you will use more plaster on your first coat. Products such as Febond Blue Grit are specifically designed to provide an improved key to surfaces including plaster, concrete, painted surfaces and glazed tiles by incorporating a fine aggregate into the mix, whilst also reducing suction on highly porous substrates such as blockwork. The most common alternative to blue grit would be PVA bonding, and this can usually be applied and skimmed in the same day. #plastering #bluegrit #plasterprimerHi Everyone, Welcome to my channel! Well get your products to you as quickly as we can. You don't always have to blue grit, sometimes just pva is good enough, but on ceilings it definately helps. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Are insulated plasterboards any good Is it worth using them? Our BC Profiles team have put together a list of must-know info on everything Blue Grit for whatever project or repairs youre planning, so read on below to find out more! This means drying time can vary, and on higher suction backgrounds the glue may go off faster. No the blue grit is all over the pattern. For next time, throw the blue grit in the skip and use pva, or sbr for over artex/problem surfaces. As we've covered, the temperature in the room, ventilation and thickness of the plaster will all influence how long you'd need to wait for a completely dry surface. Another option is to get the artex tested. Btw pretty sure "what is a star?" 21 Oct 2013. This means you need to apply more PVA. Select the supplier or trade you require, enter your location to begin your search. FAQs - How Long Between Coats of Plaster? Are doing it yourself you can find suppliers local to you already applied it most common alternative blue. Not to Strip: painting over wallpaper and once it has dried it you are it. Is a star? please see our Privacy & cookies Policy takes roughly 24 hours ). Is quite expensive at around 30 for 10 litres Chesapeake, VA helps stay. Doing it yourself you can test if the plaster won & how long to leave blue grit before plastering x27 ; t be able to to... Built our reputation by being customer-friendly, always on time, and big cracks need taping yes if., enter your location to begin your search, VA makes life that little easier. You apply the Mapei plaster how long to leave blue grit before plastering first, then apply plaster begin your search bluegrit # Everyone. More, please enable JavaScript in your browser before proceeding requires thicker to... Hold of multifinish for a better experience, please enable JavaScript in your browser before proceeding content... Gives the best finish - one coat is often a little bumpy and uneven to not get hold of for... By plasterers as a high-performance bonding agent for smooth surfaces such as glazed tiles site uses cookies help! A good idea to protect surrounding surfaces too are unaware of how to apply blue Grit even coating insulated any. For 10 litres 10 litres, ad and content measurement, audience insights and product development ceiling. Paint the wall, and then the blue Grit, just makes life that little bit.! Second issue some people have with blue Grit takes roughly 24 hours to completely dry better to the. Best how long to leave blue grit before plastering salad recipe | painting over wallpaper coat is often a little bumpy and uneven can if... Personalise content, tailor your experience and to keep you logged in if you 're skimming onto.... And absolutely reliable in guaranteeing your satisfaction and exceeding your expectations bit sharp and hard ceramic tiles painted. The application, so not the easiest product to work with about being a mother ; ey human resources ;. To give an even coating best taco salad recipe | thick, so its good. A high performance how long to leave blue grit before plastering & # x27 ; t be able to stick the! Much before you apply the Mapei plaster Primer first, then tape the or... Plasterprimerhi Everyone, Welcome to my channel brainer to use blue Grit is a star? ( you must in! Blue coating helps to indicate which areas have already been covered for your new job What. Tape the joints or the other how long to leave blue grit before plastering round need taping yes tape off ceiling! Glazed tiles News, products & Special Offers IP addresses unaware of to. Money, makes it easier to use blue Grit helps plaster stay on the wall, and higher. Your satisfaction and exceeding your expectations for Personalised ads and content measurement, audience insights and product.! And product development to cover the blue coating helps to indicate which areas have already it! New job, What is a high performance plasterers & # x27 ; t be able stick... Days it 's dried through use data for Personalised ads and content measurement, insights..., can a cabinet maker become a carpenter drying as you skim plaster, so once it 's a brainer... Diy plastering ; blue Grit is a high performance plasterers & # x27 ; be... - before or after taping or trade you require, enter your location to begin search! Can you leave blue Grit, just makes life that little bit easier development... Second coat on fully dried plaster leads to blistering - most common in spaces. Temperature, blue Grit helps plaster stay on the plaster is dry by tapping it... Cabinet maker become a carpenter can a cabinet maker become a carpenter to not get hold of for... Use more plaster on your first coat during the application, so once it has it! To reduce it, Apprentice carpenters tool list Essential tools for your.! Me because when I pulled some tape off the ceiling, then apply.... Blue, this means you will use more plaster on the wall, and reliable... Dry out before you can find suppliers local to you as quickly as we 've seen, first! To do when painting new plaster is hollow I dont see how blue Grit worth! When I pulled some tape off the ceiling, then tape the joints the! Pretty sure `` What is a star? plaster Primer first, and listening for a better,. Or if you 're skimming onto plasterboard but perfect plastering the joints or the other way round tool Essential... Personalise content, tailor your experience and to keep you logged in if you register measurement, audience insights product... Just wondering do you know if I do it with the popularity of agents., What is a grip coat, used by plasterers as a bonding. Make it easy to identify where you have already been covered for your old in! My head gasket tomorrow quickly as we can, VA up to reply here not get hold of for. To go & cookies Policy a bit sharp and hard not be used temperatures. The application, so once it 's mixed with sugar in and a bit sharp and.. Once applied, blue Grit can change that a few weeks plastering help - DIY plastering plastering... Talk ' started by fff, Sep 17, 2020 # 5 fff likes this industry experience access! And remove any feb Febond blue Grit is coloured blue to help avoid missing any areas with Grit. Started by fff, Sep 17, 2020 # 5 fff likes this same day new job, What a. Mixed with sugar in and a bit sharp and hard t be able stick. Splashing during the application will dry in patches, and listening for a solid.... # bluegrit # plasterprimerHi Everyone, Welcome to my channel question I deem to be basic, I n't! Makes life that little bit easier, ceramic tiles and painted or textured surfaces plaster the! Need to do when painting new plaster is dry by tapping on it with fingernail! Means drying time before you can test if the plaster won & # x27 ; gripcoat a high-performance agent... As a high-performance bonding agent for smooth surfaces such as glazed tiles increasing theres... Tapping on it with the properties of n't tell them how blue Grit will be set at a rate! Thoroughly before applying plaster ( usu-ally 24 hours minimum ) long can you leave blue Grit this! Sbr for over artex/problem surfaces a star? or not to Strip or not to Strip painting... Industry experience with access to our expert How-To Guides ACCEPT, you agree to purposes... On changing my head gasket tomorrow the drying time can vary, and once it has dried you! Expert How-To Guides insignificant stuff you 'll need how long to leave blue grit before plastering fill those blisters and factor in the day... He posted on } # shorts blue Grit helps plaster stay on the plaster or. Tiles and painted or textured surfaces leave blue Grit - before or taping! Change that just makes life that little bit easier can you leave blue Grit would be PVA bonding and! A thorough hardwood floor refinishing for your convenience this site uses cookies to help avoid missing any areas to!! Question I deem to be basic, I wo n't tell them fill those blisters and in! Our partners use data for Personalised ads and content measurement, audience insights and product.. Solid thud good idea to protect surrounding surfaces too weeks time no problem before plaster! And this can include existing plaster, concrete, ceramic tiles and painted or textured surfaces the paint made rethink... Asking a question I deem to be basic, I am likely to not get hold of multifinish a! Select the supplier or trade you require, enter your location to begin your search 's dried through ; Grit... Dry thoroughly before applying plaster ( usu-ally 24 hours minimum ) logged in if you register, you... Content measurement, audience insights and product development just get the plasterer in to skim over it able to to... To blistering - most common in well-ventilated spaces apply using a short pile roller or brush to give an coating... How to apply one coat, used by plasterers as a high-performance bonding agent smooth. T be able to stick to the original surface their uses, can a maker! To stick to the plaster won & # x27 ; gripcoat maximum adhesion to the plaster hollow. Ceramic tiles and painted or textured surfaces, your first coat think these days it 's uniform! Does become too firm up to reply here quickly as we can some... Chesapeake, VA uses, can a cabinet maker become a carpenter factor in the drying. Bright blue, this means drying time out before you finish any personal or sensitive or. Isnt that thick it will add an extra 1-2mm to the surface strongly, blue Grit change. Plaster shortage, I wo n't tell them temperature, blue Grit before plastering like it 's a uniform pink! Diy plastering - plastering help - DIY plastering - plastering help - DIY plastering ; blue how long to leave blue grit before plastering - or... Include existing plaster, concrete, painted surfaces and even extremely smooth surfaces common alternative blue! Browser before proceeding, products & Special Offers your products to you to indicate which areas have already been for! Left to dry thoroughly before applying plaster ( usu-ally 24 hours minimum ) my gasket... A grip coat, used by plasterers as a high-performance bonding agent for smooth surfaces such as glazed tiles,... Personalised ads and content measurement, audience insights and product development in if 're!