The range has been hand selected from established brands, who manufacture durable products. Screwfix customers rate this product 5/5. com. Suitable for 127mm Wide Coving. Because it's durable, weather-resistant and breathable, Weber one coat render is particularly useful for outside areas that are exposed to the weather, like garages, conservatories or garden walls. PVA sealer is an extremely versatile, odourless, waterproof and non-toxic adhesive that is suitable for a multitude of tasks and requirements. Everbody have different ideas for the perfect render mix, I usually do 1st coat (scratch coat) 3:1 sharp sand with waterproofer, 2nd coat (floating coat) 4:1 sharp sand with waterproofer. Screwfix Community Forum. Weather-Resistant. Extra grip, render bonding agent that contains a fine aggregate to provide an improved mechanical key before applying render on external concrete, blockwork or brick. 99. You can use this all-in-one primer and sealer to form a waterproof layer on outdoor surfaces such as concrete, lightweight. Try on a couple of places (bottom of wall more likely to have weak adhesion). 14th edition, Oct 12, 2017 #1. Suitable for new or renovated substrates, either unpainted or painted: gypsum plaster, old painted surfaces, cement, concrete, breeze blocks, bricks, stones, glass and. com. Order online at Screwfix. The lime render was there for a reason, its breathable, lobbing in cement isn't a good idea, it may cause problems with moisture depending on the wall, you can buy a lime render mix. Home Forums > Screwfix Community Forum > Builders' Talk >I will need to clean the base coat which is solidly attatched to the block wall and scratch it, probs with a grinder and apply a new top float coat using a mix of sand / cement / waterproofer and maybe lime as per this sites recomendations. Hundreds of stores Nationwide. Ideal for use on swimming pools, water tanks, ponds, below ground concrete, as well as for render and floor screeds for water resistant applications. Will adhere without primer even on slightly damp surfaces. FREE next. Its a painted concrete block wall, about 60m by 2m. On dense, less absorbent brickwork or render, coverage of the brick waterproofer can be increased by up to 10m² per litre. Do i use waterproofer in both the base render and top render? My plan was to prime the brick first with 3:1 unibond and then 1:1 unibond as i offer up the base render. + fill all gaps with new expanding foam. Suitable Application. 1. Use on exterior house and building walls, on concrete and brick built surfaces. Page 1 of 2 1 2 Next > Thread Replastering around doorframe with very uneven brick walls. The correct method is as follows:- 1st coat (scratch coat) 3:1 sharp sand with waterproofer and scratched. She got the guy back and he said 'oh well, it hasn't worked, you need the place tanking which. Buy Aggregates & Chemicals at Screwfix. Screwfix Community Forum. Seeking a bit of advice, been waiting for my plasterer to come and do my external rendering. Sikagard Facade makes walls and. Ideal for fixings in perforated brick, solid brick, concrete and aerated concrete. External wall is rendered. The traditional two coat rendering on a porous surface, i. Free next day delivery available. Silicone render and waterproofing for penetrating damp. Dig out the soil behind the wall, put a sheet of dpm against the wall, drill through the wall at low level every metre and fit a pipe to act as a drain hole, part fill the trench with grave, put soil in the rest, trim the dpm to ground level and re-render. Do what the gardener should have done. It is a process that helps make an object or structure waterproof or water-resistant, meaning it remains relatively unaffected by water. 5055492702975. B&L, Choose one or the other. Ok, I don't know what mix to use, whether to use PVA, or how much waterproofer to add - although all that stuff must be out on the interweb. Mould & Mildew-Resistant. Ready to Use. No waterproofer in render scratch coat. Handyandy - really Mr. Extra grip, render bonding agent that contains a fine aggregate to provide an improved mechanical key before applying render on external concrete, blockwork or brick. Phil the Paver Screwfix Select. You must be 18 years old or over to buy this product. gauge everything put the water in the mixer then add the lime to the water ,once the sand and cement is added let it MIX!don't take it out because it looks ok,let it mix dont start rendering until the second mix is ready. Tapes suitable for a range of materials stocked. Click and collect in as little as 1 minute. Also for repairing cracks and damaged stone edges. Login to save for later. If you are going ot paint it, use a Stabiliser solution first to prime the render then apply two coats of a good masonary paint and you shouldn't have any problems. 5 Ltr. Hi, I am going to render round the bottom of the bay windows, would it be a good idea to use integral waterproofer? One of the bays is north facing. for a half bag mix in a small mixer add one cup full of waterproof and one cupful of placticiser to a bucket of water. 90. 4m²/Ltr. As it dries then rough up the surface to match the surrounding render. render on lead. I would get your render on soon so the block work can dry out. Low Odour. Another difference is that a proper plasticiser has a limited amount of air entraining ability so that leaving the mix turning too long has no detrimental effect on the mortar. We stock Everbuild PVA, ideal for use as a contractors PVA due to its high strength. Normally you put on a scratch coat of 4 sand to 1 cement ( plastering sand ) with feb, 2nd coat, float coat 5 sand to 1 cement, feb plus water. oh! and ladies. This not painted at the time as suspected water ingress problem however this issue now resolved. I intend to apply sandtex stabilising solution and then sandtex fine texture paint which say's it has a breathable waterproofer in it. Many can be painted over to match the colour of your windows or frames. Considering that you nickpuff seem to be the only person that is unable to decipher plain English I will help you out a little. Many thanks!The problem here, is that the render will be 'attacked from behind' by damp from within the beds - unless you're provided adequate drainage for the trapped water in the beds. 1 waterproof additive put into the mix, only other option to guarantee know more damp is th hack off internal plaster work, apply vandex over all exposed brickwork, sand cememnr then plaster, damp will be gone for ever. This full-bodied, solvent-based paint dries quickly to form an odourless and taint-free black film – it’s suitable for metal protection as well as overcoating wood and felt. ★★★★★ ★★★★★. K Rend). Neville the tap dancing gibbon, Sep 2, 2006. Sika Bond SBR+ Waterproof Bonding Agent and Mortar Admixture - 25L (6) £99. As well as offering protection, exterior wall paint improves the appearance of a property by brightening it up and bringing it back to life. Many rubble stone buildings in South Gloucestershire were originally lime-rendered, and/or lime-washed and render is a distinctive local feature which should be retained. Sealing porous areas and extending coverage with paint sealer will ensure a longer lasting coat. Order Thompsons Drive Seal Black 5Ltr at Screwfix. The garage is being used as a semi heated workshop hence the insulation, but I don't forsee any great generation of moisture within. Adheres to damp masonry and is weather-resistant. Page 1 of 2 1 2 Next > Gary hunt New Member. 1. A. So it'll be damp from behind (penetrating damp) and damp from below (rising damp), so not much to be gained by. Primer paint is required as an undercoat before applying the upper layers to any surface. Thread. I usually rule it off,fill the hollows and then leave it until it starts to get firm (dependent on the background I know). Mr. dj. 5:1:1/2 Good gritty sand, (or plastering/rendering sand) cement, lime, in two coats, scratch first coat, no pva just well dampened walls. OP, Now I can see why the fire wall and the stack have been rendered. For picking up 1" use two coats of 1/2" each. The bottom line is you require a waterproof wall; your solution of replacing the existing render with new would still require a waterproof paint, so go the whole hog and improve the insulation value of your wall, you will still get your new render be it 50mm further out, the bonus is you will save on your heating cost by reducing the heat loss. It’s great for waterproofing outside areas that are liable to be damp, humid or continuously exposed to water or steam. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. 1 originaly and it was too rough to work with,managed to get 2 coats on 1 area straight away no probs. FREE next day delivery available, free collection in 1 minute. Buy Cable Sleeving at Screwfix. I don't trust my builder and although he assured me he put waterproof additives within the render I do not believe him. 3/when dry, three coats bitumen. Ideal for emergency repairs, filling and patching. Over 40,000 products. From what I’ve read on this very helpful forum, it’s a water/salt problem. there is a waterproof pva available which some say would work ok, but the consensus here is that either sbr or a sand/cement. 'A' way to do it is this. FREE next day delivery available, free collection in 1. Can be used to seal joints between tiles, stone and brick slips and pointing around lead flashing. A waterproof render is more a damp proofer than a waterproofer. Due to the damp problems and salt, I decided to go expensive on bonding and have been caking the surfaces and mortar lines with SBR / cement slurry before rendering. £13. I know I need to attach mesh to the surface, but a friend has told. This process is best carried out using a pumping system and water fed pole with a brush attachment. Protect your outdoor surfaces from the weather by coating them with black bitumen paint from Everbuild. 99. . The real question is is galvinised mesh ok. Extremely durable and will adhere to any substrate for filling and repairs with no depth limit. Creates smooth, easy to work with mortar. waterproof render. Sometimes i use wire ( render lathe to all you young spreads ). You shouldn't use PVA for external render however they do make an external grade one but this isn't necessary. He came back and redid that area, and it leaks there worse than ever - it's just like a sponge. 2 apply a suitable rendering adhesive (Powerwall make one but so do others it is like a polymer based tile adhesive) 3 bed a fibre glass mesh in the adhesive and trowel flat. 5/5. This is an interior wall but yes its a wall with a window and other side is exterior. I know when we do the top coat it's gonna suck the moisture out like crazy. Click & Collect. Sets in 20 minutes. Discussion in 'Builders' Talk' started by Bungditin. A-. Hundreds of stores nationwide. Discussion in 'Builders' Talk' started by Pagloss, Apr 6, 2006. 1. Protecting from rain, frost, ice and snow, this product is ideal for providing extra protection to your home's exterior. If you arent going to paint over it then put the water proofing agent in the top coat. Completed an extension last summer and the exterior walls were cement rendered the usual way with waterproofer etc. Not available for delivery. Provides superb weather protection for bricks, mortar and concrete. Waterproof. As the title suggests is artex that you use to decorate ceilings waterproof?chillimonster Screwfix Select. Thread by: Crooky, Jul 4, 2021, 2 replies, in forum: Builders' Talk. • Air entraining plasticiser • Prevents shrinking and cracking during curing • Water reducing • Chloride freeMortar plasticiser for stronger, easier to use brick and block-laying mortar. Product information. He rendered approx two square mtres at a time before applying dash. Done a good job apart from i didn't put waterproofer in. Need to render an external wall or building? The Everbuild 507 Rendagrip bonding agent will help ensure your render sticks firmly to the desired surface. Cementone Freeflo Plasticiser is a retarding waterproofer and plasticiser. 5mm plasterboard to the wall, and then skim. Mix approximately 4 to 5 litres of water per 25kg bag using an electrically driven mixer until you achieve a workable consistency. com. Use a mixer and measure quatities using a bucket for consistency. i know its best to take the wall back to brick,but should i add a waterproofer to the floating coat (common sense says yes) as per external render,and if so what type? i have'nt been. waterproofing paint. , Apr 8, 2005 #2. Most can be used on all common surfaces, and as a decorative trim or door paint. Product code. Soudal Repair Express Plaster Filler White 250ml (125RG) (4) compare. 2nd coat (floating coat) 4:1 sharp sand with waterproofer as above etc. In 20 years of building and renovating, it has never been mentioned in our business. Don't use sharp, builders merchants do plastering sand just tell them thats what you need. Suitable as a damp proof membrane on solid concrete floors. MyPetFrog likes this. Inc. you. This is your 'drip-tray' separating the above and below dpc areas. When applied, Febtank Super forms crystals preventing water ingress and provides an extremely durable waterproof coating. Totally forgot as was so busy myself and only had a spare few days to do it. ssss64 New Member. Applied waterproof PVA. com. Apply a bitumen or Pitch Epoxy coating from the outer edge of your 'slope' all over the existing dpc and up the wall 150mm. Only way to test if it's still wet is with a moisture meter. From waterproof adhesive to glass adhesive, it is important to choose the right glue for the job. The front apex has often shown signs of water ingress as the mortar lines underneath are often visible after heavy rain. Click & Collect. do i need to apply a thick scratch coat beforehand?? I was thinking of just applying a thin waterproofing mortar just to smooth pores in the block, joints etx, and apply this acryllic on top of. The. Furthermore, the stabilising solution and PVA will both act to keep any moisture within the concrete, hence why you experiencing problems. when i removed the old wood it crumbled so i pulled it all off. Whether you’re looking to stop a leak, repair an existing roof, or fit a new roof, Bostik has a solution to support the step-by-step process of your next waterproofing project. Apply with Brush or Roller. If you wait then water will get in behind it and more and more will fall off. For use on solid substrates such as brickwork, blockwork and concrete, in moderate exposure conditions. render SamBeevor96__ New Member Renovating an old cottage which has penetrating damp, looking to apply an internal sand and cement render adding thermoseal/waterproofer to stop the damp coming through. Should you wish to brighten up these surfaces then use the Weathershield masonry paint system (old render may require a coat of stabilising solution first). the. all external work is sand and cement render and is a two coat process the frirst coat applied is called a scratch coat and is about 9. Perhaps just get a small bag of sand & cement from a plumbers supplies and after gluing up the patch (Pva or SBR etc) then fill and level off with the mortar. Been a plasterer /damproofer for 28 years and yes you can use SBR and Paint over it but will need to give a sand or LIGHT. . A complete crystalline solution for waterproofing masonry and blockwork. 2 coats. Buy Exterior Paints at Screwfix. cement board and the masonry wall must be wiped down to. You might wonder why you need two (or more) coats. IKOpro Synthaprufe Trade is easy to apply and provides damp proofing for concrete floors, foundations and masonry walls below, at or above ground level. p) may be an overkill but this is how <u>PROPER</u> tanking should be done and hey better overkill now than taking it. 54/L quantity Collection Set Store. I'd get rid of the rusted steel regardless of what you do (unless you tile) as it will bleed through render etc BMC2000 , Oct 10, 2017Hah. Volume. Applying the board directly onto the membrane with thin adhesive and mushroom fixings. 99 Inc Vat. 202 Integral Liquid Waterproofer is a liquid additive that provides long term water protection to mortar, concrete and rendering. com. My question is what do I need to do to the surface to prime/seal it before the top coat? I intend to finish off with a Dulux exterior weathershield paint. Can any EXPERIENCED plasterer advise if I can render over existing multi finish plastered wall with sand and cement (with added waterproofer) to level it out as its bowed? I don't want to use browning or bonding as it sucks moisture and this is an exterior solid non cavity wall. Home Tags > rendering. Render up to (or very slightly below) the damp course, finishing with a 25° slope down and outwards from the dpc. FREE next. Dow 791 Weatherproof Silicone Sealant Anthracite 310ml (44836) (42) compare. OR 5:1 Good gritty sand, (or as above) cement and a bit of plastisizer in first coat (again scratched) then Rendamix in. Ricky Johnson New Member. normal bricks and most blocks, calls for a 1:1:6 mix for the scratch coat; cement, lime and sharp sand (3mm to fines). Exterior rendering is, I think, a more manageable beast that, say, internal skimming. A friend has given me some acrylic render (premixed tubs 25kg) which is a topcoat, and more than enough to do the job. If it could be dug down far enough then a waterproof render might be enough hallbeck, Jan 24, 2007 #3. Overcoat with any. Home Forums > Screwfix Community Forum > Builders' Talk > Is Artex Render Waterproof? Discussion in 'Builders' Talk' started by DIYDave22, Nov 8, 2023 at 5:34 PM. Low Odour. Weather-Resistant. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. There are various types for different applications, including quick single coat options. The fact that it's a retaining wall means that it's going to be damp, almost by definition. Sandtex Ultra Smooth Masonry Paint Pure Brilliant White 10Ltr (23771) (573) compare. By doing it this way you have. Volume. 74/kg quantity Collection Set Store. Click and collect in as little as 1 minute. In December I had a 2 foot earth retaining wall built in my garden to separate the garden from the patio. I would check adhesion using a piece of rubber, the type used for door stops (screwfix p118), glue it with superglue (allow to cure) rip it off and see what gives. 1. Read more. Home Tags > waterproofer. )As long as you have good key you could get away with one coat say 10 mm thick. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. I’ve done an extension and due to the nature of the land, now the door of the extension will be about 50cm above the grass of the garden. Primer Not Required. Daveukleics Member. ex. the case is, it is a kitchen area, i have plastered 4 walls, 3 dried completely. Buy Cement Mix at Screwfix. com. Once the wall is cleaned off treat it with an external sealer diluted to 2 parts sealer to 1 part water and mix thoroughly. 88 Inc VAT-+ Add to Basket. Currently in Stock. Suitable for new or renovated substrates, either unpainted or painted: gypsum plaster, old painted surfaces, cement, concrete, breeze blocks, bricks, stones, glass and glazed tiles. One Coat Render is a high quality, pre-blended formulation, for single coat application reducing total drying time. He came back and redid that area, and it leaks there worse than ever - it's just like a sponge. Single application waterproofing compound for emergency repair and general maintenance of most roof types. Good luck. Coverage per Litre: 6m²/Ltr. For a clear coating over bricks to allow. Is 3:1 plasterers/rendering sand to cement correct for the scratch coat and what about subsequent coats? What's the maximum thickness of scratch coat and top coats?If you go for this option you'll need to render the stonework first to give you a suitable surface. I've attached some images. The biggest problem with a single-skin external wall is condensation which most people confuse with rising damp. But it has no brick exterior wall. These products are suitable for use on a variety of materials and can be applied by hand with minimal tools. My builder is suggesting cutting 100mm of it away at the bottom to let it breath. UK call centre ready for your call 24/7. Home Forums > Screwfix Community Forum > Builders' Talk > Render Waterproofer. Mr. Touch-Dry in 6 Hours, Fully Dry in 24 Hours. 99Inc Vat. The problem I am having is that the waterproofer in the scratch coat is not allowing the finished coat to go off for up to 8 hours ( wall in shade. Delivery. Sanitary Fixings Kits. Contains primer, coating and waterproof jointing tape. View all: No Nonsense Cement Mix. Its faced brickwork which has been painted, plan is to bead it, mesh it ist coat 4:1 with waterproofer 2nd coar 5:1 no waterproofer. Suitable for 2. 54 Inc VAT. Weather Shield say leave it until Spring. PVA wall first. You could remove all the damp affected render and plaster back to stone and then render with a 4:1 mix of sand and NH lime. Fast-Drying. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. In terms of damage to your external walls, if any water that has gotten into your brickwork freezes, it will expand outwards within the brick, creating cracks (or more cracks) in your brickwork. It has many uses, and is suitable for most porous. Render thickness seems to be between 5 and 10 mm. Handyandy, Oct 23, 2005. £2. co. Volume. Contains primer, coating and waterproof jointing tape. , Feb 26, 2008. I plan to re-flaunch my chimney in April when weather improves. With regards the tile adhesive Devils advocate is sound advice. The Bonding coat should not be allowed to dry before application of the render or plaster. Search Activating the button will move focus to the expanded search input fieldContains primer, coating and waterproof jointing tape. Bricks are non porous, that's why houses are made of them. Buy Cement Mix at Screwfix. But overmix using Fairey and the mix becomes a foamy mass of bubbles with very limited final strength. Acrylic frame sealant is ideal for internal use to fill. Sika Proof Liquid Waterproofer 5L £7. im rendering onto concrete blocks on the outside of my new shed/workshop. Screwfix customers rate this product 4. 99Inc Vat. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. Screwfix - Rapid-setting waterproof cement. Most traditional renders are applied in two coats; a base coat and a topcoat. Sika Bond SBR+ Waterproof Bonding Agent and Mortar Sika Bond SBR+ is a one component, water based, general purpose, styrene butadiene rubber emulsion bonding agent and mortar admixture. Suitable for brush application only. If you don`t want waterproofer at least use a plasticiser or lime. . I've slapped a PVA solution to brickwork on internal walls prior to render, I GUESS that this situation is no different. Step 6 – Apply First Coat of Render to Wall. One Coat Render can be used For interior and exterior use and has been formulated for single coat. Mix was about the same consistensy as for laying bricks. Must be quite loose, but not too runny. Any advice would be greatly received, we dont want to knock it down. DIY_Has123, Feb 3, 2021. PVA is a water-insoluble resin which is typically white at the point of application, but dries colourless and has a high bonding strength. This would be better off in plastering forum. 90 Ex VAT. £ 28. 96 per L . Discussion in 'Builders' Talk' started by questioner, Jul 6. I have waterproofer and unibond. Two thin render coats. Ideal for emergency repairs, filling and patching. High performance waterproof treatment for exterior porous surfaces. Odourless & Solvent-Free. . Removable Grid Supplied. Tarmac Once Coat Render is a pre blended render, just add water to apply. drill driver, Jun 21, 2005. Can anyone suggest a good product to prevent/reduce water penetration that can be applied over the existing render, preferably by the builder who did the first render as obviously he wants a satisfied customer. £6. For External Use. 12-16m²/Ltr. Aggregates & Chemicals. I am also used 3:1 evermix plasticizer / waterproofer / retardant in the mix towards a strong ratio. After starting he informed me that. Dried clear. Stormdry Masonry Protection Cream is a colorless waterproofing cream for application to brick, stone, mortar, render and masonry. Hello. £39. Hmmm, that could look impressive. Discussion in 'Builders' Talk' started by ssss64, Jan 23, 2007. 30 day money back guarantee. PAGE 1 OF 2. com. Then sharp sand fine, lime, cement in 6: 1: 1 ratio as top coat.