com. Order online at Screwfix. View all: Thompsons Water Seal. Click & Collect. Now I am intending to use cement, sika waterproofer and sharp sand and render this wall. common sense tells you that this system will go nowhere and it wont. Fill holes and cracks with ease, suitable for many applications. 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. that's why i am kind of believe the exterior wall is vulnerable to weather conditions. Do what the gardener should have done. Screwfix customers rate this product 4. Was going to brush over the cut end with SBR slurry then render, just wondered on this small area can I just use 1 coat, 5 sharp sand / 1 cement with a splash. #2. £59. 99Inc Vat. If you do not want to change the appearance of these walls then use a masonry waterproofer (two coats). The wall is hollow concrete block, backfilled with concrete and reinforced to some rather substantial footings. He advised waterproof PVA. 3. Use it as a bonding agent, primer, sealer and. KIAB Super Member. £32. €28. If I render with febond sbr sand and cement render then I can use 10mm travertine tiles. Ready to Use. £8. Two thin render coats. Home Forums > Screwfix Community Forum > Other Trades Talk > waterproofing internal rendering Discussion in ' Other Trades Talk ' started by woodburner , May 16, 2006 . 99 Inc Vat. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. Also for repairing cracks and damaged stone edges. 1 remove lose stuff. B&L, Choose one or the other. Big Jumbo, Jul 27, 2009. It is supplied in the form of a deeply penetrating cream that is applied to the wall surface using a roller or brush. VAT £6. Sika Waterproof Coating Grey 5kg. 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. If others have done it - then they have done the wrong thing. When applied, Febtank Super forms crystals preventing water ingress and provides an extremely durable waterproof coating. Hi, My extension was built and rendered using a sand/cement render around 4 years ago. FREE next day delivery available, free collection in 1 minute. Home Forums > Screwfix Community Forum > Builders' Talk > Waterproofing. I guess the best way to render the bell bead is in two parts. 95 Ex VAT. e. Delivery. Screwfix customers rate this product 4. 24 kg. Primer Paints. Shapeable to Repair Without Formwork. £9. FREE next day delivery available, free collection in 1 minute. G4 Pond Sealer is a moisture cured polyurethane which forms a non-porous seal on concrete rendered ponds, G4 pond sealer uses the moisture in the air and the render to harden, G4 pond sealer can be applied to slightly damp surfaces, but it is important that the render is sufficiently dry to be porous so as to. The render goes right down to the ground outside. She got the guy back and he said 'oh well, it hasn't worked, you need the place tanking which. Hi, I wonder if anyone can help/ offer some advice as we’re at our wits end. 99. I intend to stipple a further slurry of Unibond, cement and sharp sand before I render the wall to make it suitable for applying tiles in the shower area. Many can be painted over to match the colour of your windows or frames. . 45 Inc Vat. Temporary repair required because house goes on market in 10 days time and I dont think I will be able to get anyone in before then (Oxford). 90m x 50mm. Home Forums > Screwfix Community Forum > Builders' Talk > Render Waterproofer. 5 kg. Given the time since it being applied does this need to have stabilising and/or waterproofing coat before painting?Yes to a mist coat - I generally thin by about 30 - 40%. FInish with horizontal scratches for a key. I know when we do the top coat it's gonna suck the moisture out like crazy. It Is single skinned and with render onto boards which were lined with fibreglass mesh. Quick-Dry Stabilising Solution. I'm putting a corner shower into the bottom floor (concrete pad) of my house. Product code. 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. It is a solution for nothing. Waterproofs Plaster, Plasterboard,. Ask a question. Not available for delivery. Screwfix customers rate this product 4. Volume. waterproof render. 35°C. Corrosion-Resistant. waterproof render. It sets to a rock-hard finish and can be overcoated in 24 hours. Thompson's Water Seal uses a unique micro silicone emulsion to stop water penetration. Waterproofs Plaster, Plasterboard, Plywood, Render & Concrete. From what I’ve read on this very helpful forum, it’s a water/salt problem. We were looking at using a product like K-rend up to the coping stones. 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. PVA Sealers. too much suction 4:1 will do you. We also don’t think it’s had waterproofing mixed in. Apply the render with a steel plastering trowel and scooping it from a plasterers hawk. 8/5. The last thing you need for tiling is a skim finish - tiling takes best on a background float such as a 3:1 mix of sand and NH lime. The Sandtex Brickwork Waterproofer & Protector provides a clear waterproof protective layer for bare brickwork. Delivery. However on the upside the materials that are available mean that working with sand and cement with added lime and waterproofer (for the record) and the ability to ashlar, and form all manner of quoins and window reveals/bands etc take far more skill than the average. Corrosion-Resistant. He uses plastering sand and cement mixed at a 3:1 ratio with waterproofer added, no lime or plastisiser. The paint has been fine until this very wet spring, when it started to bubble and peel in large random areas. i dont really want to strip it all off and start again as im sure there is something i can do with it and with a bit of luck the answer will be in hear with all the tradesmen. Some wall primers create barriers to stop. 30 day money back guarantee. Volume. Have look at Weber Weberend Aid made for smooth surfaces, will provide a key. (former damp problems)And install 22mm insulated plasterboard over that. 4) Remove the damp plasterboard internally, remove the wet sand, waterproof paint the brick internally and. 8m)above newly-fitted french doors to render. 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. For interior and exterior floor and wall installations. Screwfix Community Forum. The fine aggregates are suspended in a unique waterproof polymer to ensure easy application by roller or brush. Phil the Paver Screwfix Select. Search titles only By: Search Advanced search…Eco Prim Grip Plus 5kg. Pieces in Pack/Case. Sets in 20 minutes. In 20 years of building and renovating, it has never been mentioned in our business. 99 Inc Vat. right quick little question, got to render gable end of a house. Daveukleics Member. Recycled Polypropylene Construction. Inc. 90min Approximate Setting Time. 5Kg. cautious New Member. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. Depending on the ratio you used for waterproofer/water in your mix you should find that the render is virtually weatherproof. Bostik Waterproof Cement Grey 10kg (58196) Bostik Waterproof Cement Grey 10kg. Thermalite hedge their bets somewhat on their finishes section. Anti-Crack Acrylic. Find your nearest Screwfix store and up to date opening times. I plan to re-flaunch my chimney in April when weather improves. Waterproof PVA. You must be 18 years old or over to buy this product. Designed to function against water penetration in various conditions, it can be used in foundation slabs, tunnels,. The product can also be used to protect retaining wall structures. Wall fillers and flexible fillers create a clean smooth and professional finish. Buy Additives & Plasticisers from Screwfix. G4 Pond Sealer Clear. Choose from rapid or fast set cement for small commercial or domestic jobs. 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. Any advice would be greatly received, we dont want to knock it down. Overcoat with any. Is it okay to press on with the inside works (batten out, 25mm celotex and 12mm plasterboard) before the rendering is complete? The renderer is proposing to do a scratch coat and then a top coat with waterproofer mixed in, and then it will be painted with something like Dulux Weathershield. Grey. Over 40,000 products. Total Product Weight. Home Forums > Screwfix Community Forum > Builders' Talk > Damp wall render. Internal Skimming of conservatory walls. For Interior & Exterior Use. Volume. Covers approx. Can I tile onto render that has been made up with plastering sand and Sika1 waterproofer or should I plaster then tile?but im having a nightmare. Discussion in 'Builders' Talk' started by pete12, Jan 26, 2006. This can take from between 24 hours up to two days, depending on humidity, temperature, and airflow around the building. Mr. 4m²/Ltr. Screwfix Community Forum. OK. Screwfix Community Forum. Prepare walls by straightening them out with a two coat render system and a waterproofer agent added to mix. Styrene-free, vinylester-hybrid, high performance mortar for the most demanding requirements. Good luck. Wire brush the exposed walls to be sure that there is no mould on the. Discussion in 'Painters' Talk' started by Joelfc89uk, May 24, 2018. Product Type. Seeking a bit of advice, been waiting for my plasterer to come and do my external rendering. 3-layer spun-bonded waterproof membrane with excellent tensile and tear strength. Show More. Weather-Resistant. I'm no pro on this, but have done a lot of research into it. Additional information. The wall is an external leaf, subject to high prevailing salty winds and has had dampness for years. 99. Air entraining – will not “flatten” the mix. You should have. View all: Sika Waterproof Sealants. This is to avoid spraying the chemicals which can then drift in. Good shout? Also, not location of air bricks. We would like to show you a description here but the site won’t allow us. Breathable masonry paint is essential for waterproofing your exterior bricks while allowing moisture to escape from inside your house. 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. com. and the level of the intended patio is a brick above the existing damp course in that specific wall. £12. Need some professional advice on waterproofing my 3ft garden flowerbed retaining wall. Are there any issues with MDB's - i know thermalites are a pig but are these any easier?you will need to hack off the external render and re-render with sika No. rogerk101 Screwfix Select. Brickie might. FREE next. Finishes are subject to high or low maintenance all of which are discussed at time of consultation. 3) Use an additive in a render mix, like SBR to act as a total waterproofer for walls and ceiling, then lay the concrete floor as above. Fixing sheets with tile adhesive, step 1. View all: Mapei Shower Waterproofing Kits. £ 14. Masonry cream is snake oil, it does nothing. General purpose, solvent-based. com. Domestic & commercial use. Render thickness seems to be between 5 and 10 mm. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. Tarmac One Coat Render is a pre blended render that can be applied in one coat for patch repairs or larger rendering projects. Sika Waterproof Coating Grey 5kg (83502) (67) compare. too much suction 4:1 will do you. General purpose, solvent-based. Discussion in 'Builders' Talk' started by questioner, Jul 6. 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. Is there anything I can do now. Choose from top trade brands. Cement based coating for preventing water and damp penetration in walls and floors. 50/Kg)Product Details. Sharp sand coarse and fine, lime and cement in 2 : 2: 1 :1 ratio for bottom coat ( scratch ) coat, with waterproofer. 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. Order No Nonsense Anti-Crack Acrylic White 310ml at Screwfix. I know this is not the best route to go in waterproofing a wall normally. Then sharp sand fine, lime, cement in 6: 1: 1 ratio as top coat. 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. Discussion in 'Builders' Talk' started by Cmd38, Sep 21, 2020. Sealing porous areas and extending coverage with paint sealer will ensure a longer lasting coat. I have hacked off crumbling old plaster to expose old brickwork and breeze block walls and I have primed the surface with 1:5 mix of Waterproof Unibond. Login to save for later. Insulates and protects wiring. 1/ clean all walls of loose material. Wet room Kits consists of a mix of products which are needed when creating an open plan showering area. £11. I've heard bad things about Sika, re: not being suitable for moxing in a cement mixer: online at Screwfix. Buy. Suitable for Water, Oils & Chemicals. Order Bostik General Purpose Mortar Grey 5kg at Screwfix. setting manholes and repairing rendering and floor screeds. 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. Can be applied onto a damp. I know when we do the top coat it's gonna suck the moisture out like crazy. Click & Collect. 202 Integral Liquid Waterproofer is a liquid additive that provides long term water protection to mortar, concrete and rendering. 8. Extra grip, render bonding agent that contains a fine aggregate to provide an improved mechanical key before applying render on external. + silcone the windows. 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. This is an interior wall but yes its a wall with a window and other side is exterior. com. Screwfix Community Forum. Forms a transparent, waterproof barrier. Then enjoy! 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. 3/when dry, three coats bitumen. Product Type. Discussion in ' Builders' Talk ' started by roger waters, Sep 11, 2006 . Go all over it and knock off the loose stuff. Pieces in Pack/Case. High bond strength. I have a small area (2. dj. com. Currently in Stock. It looks like I'd need 3 different types to do the job properly with that stuff but it looks like good stuff. If you wait then water will get in behind it and more and more will fall off. The waterproofer acts as a plasticiser also, in fact with a rather coarse sand it is a far better plas than plas! A 10-15mm floating coat is good, use a length of 2x1 roof lath to rule it straight then when it has taken up enough float it all filling in all the slacks (holes) then finish with a damp rung out sponge (optional). com. Tarmac Once Coat Render is a pre blended render, just add water to apply. Grey colour when dry. Suitable for 127mm Wide Coving. today he's applying top coat with no waterproofer. the rendering is the easy bit. Wait a few minutes, feel the pva. Can anyone tell me which is the best silicon based waterproofer they have used for waterproofing an exterior stone wall. 41 Per unit £1. You capture lots of potential issues in one go, including new ties and new DPC, and probably the opportunity for some insulation. • Prevents water penetration in a single coat • Improves resistance to dirt, oil and stains• Seals and stabilises non- structural concrete• Sealer for internal concrete floorBostik Concrete Sealer is a quick drying, low VOC water based sealer that seals and. 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. PVA sealer is an extremely versatile, odourless, waterproof and non-toxic adhesive that is suitable for a multitude of tasks and requirements. 5°C. com. 49. Buy Aggregates & Chemicals at Screwfix. . Live in an old stone cottage,just chopped a load of original lime/horsehair plaster off some of the kitchen walls,rendered it couple off weeks ago with 1st coat 3 sharp 1 soft 1 cement and redermix aditive,put the soft in as did a 3. com. (42 products) Gloss paints are used to provide a high shine finish to interior or exterior surfaces. 99Inc Vat. 93. damp down the area your about to work on to get rid of the dust. The the final coat - 5 sand 1 cement NO WATERPROOFER just feb. 310 ml. Waterproof. Screwfix Community Forum. The waterproofs range offers you a selection of colours and sizes to suit your needs while keeping you dry throughout your working day. Roughly 1 of cement, 1 of lime, 4 of sand (usually sharp), below dampcourse, no need for waterproofer (some put it in anyway-also helps spreadability). SBR modified render will probebly be good enough soverine chemicals also do a product called K11 I think never used it but told by one who had it worked a treat,Otherwise, admixes can give some increased protection against water ingress for external render, or try a cement based render for the inside bay, which should keep water at bay moreso than plaster. Only way to test if it's still wet is with a moisture meter. Initially it was agreed that the old render would be removed and a new render put on the bricks. K Rend). 5m x 0. ★★★★★ ★★★★★. 25 Year Waterproofing from a Single Coat . FREE next day delivery available, free collection in 1 minute. FREE next day delivery available, free collection in 1. There's render up to about one metre all the way around the room, then its a 'board & dab' job up to the ceiling. Handyandy - really. Order Bostik Waterproof Cement Grey 10kg at Screwfix. ★★★★★ ★★★★★. And all this after the walls were skimmed and painted. 99Inc Vat. I want a rustic finish which is why I'm not going for tiles, and ideally would like something like lime render but would like to know if their are any waterproof plasters / cement or whether you can use what you like but simply give it 2/3 coats of a suitable varnish. Will adhere without primer even on slightly damp surfaces. Volume. 'A' way to do it is this. Use a mixer and measure quatities using a bucket for consistency. Choose from rapid or fast set cement for small commercial or domestic jobs. KIAB Super Member. Sandtex masonary paint is top notch, waterproof and flexible so as long as its put onto a good base (hence the Satabliser solution first), it would do the job and look great. Use it after clearing. A-. It's all more controllable, and the 'plaster' ain't setting before your very eyes sending you into a blind panic. 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. Finish second coat with sponge or wooden float. The rendering is falling off because it is dead and no longer adheres to the surface of the wall. 5/ plaster to suit. Can anyone give me advice on rendering over Medium Density Blocks for an external garage. Use on exterior house and building walls, on concrete and brick built surfaces. Product Details. 5 apply new finish. For a clear coating over bricks to allow. Mr. This is your 'drip-tray' separating the above and below dpc areas. Totally forgot as was so busy myself and only had a spare few days to do it. That will last. From what I’ve read on this very helpful forum, it’s a water/salt problem. com. View all: Mapei Shower Waterproofing Kits. Screwfix customers rate this product 4. Buy Cement Mix at Screwfix. If the wall is dry (unlikely this year!) lightly damp it without soaking it completely before applying the. fillyboy Screwfix Select. What depth should the battons for the scratch coat be? I was looking at 10-15 mm deep off the wall. Buy Cement Mix at Screwfix. But i have a job to do, and i am considerong using sbr bond on it first, as im always interested in new methods. My builder is advising to render and d&d, but this seems like more work to me for no real reason. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. The wall has a cavity with no insulation and about 150mm above the damp course. 2: Hydrophobic Coatings. Give them a good scrub or pressure wash and tidy up the pointing. don't pva the wall either first coat with waterproofer in and second coat with waterproofer in also. External wall is rendered. Buy 3 for £11 - View Offer. Slow setting time makes it ideal for covering large areas in one application. This time, its butting up against 12mm plasterboard (painted) which was dabbed directly to the brick (no render). Inc. com. The fact that it's a retaining wall means that it's going to be damp, almost by definition. shazauk New Member. IKOpro Synthaprufe Trade is easy to apply and provides damp proofing for concrete floors, foundations and masonry walls below, at or above ground level. PAGE 1 OF 2. 88 Inc VAT-+ Add to Basket. Mix was about the same consistensy as for laying bricks. BEfore dry (as the instructions suggest), I was then going to render to approx 10mm with a 5:1 rendering sand:cement mix with a waterproofed within. common sense tells you that this system will go nowhere and it wont. Will this be enough. So it'll be damp from behind (penetrating damp) and damp from below (rising damp), so not much to be gained by. 5 Ltr. My sister had her coal cellar done last year, and the guy used Sika 1, then rendered and plastered over it. This waterproofer penetrates deep into the brickwork whilst still allowing the surface to breathe. Not available for delivery. Screwfix customers rate this product 4. View all: Bostik Cement Mix. Bostik Cementone General Purpose Mortar 5kg. Touch-Dry in 6 Hours, Fully Dry in 24 Hours. Add 1 cup of a waterproofing render mix per bucket full of water you mix. Primer paint is required as an undercoat before applying the upper layers to any surface. Sandtex Ultra Smooth Masonry Paint Pure Brilliant White 10Ltr (23771) (573) compare. 5mm² Cables. The old injection attempt has not worked, and neither has the inside attempt to render to 1m ht. Will fill without depth limit and repair without formwork. Cut back on the admix a little, mix it up stiffish then allow the drum turn for five minutes and let the admix do its stuff, the mix will reach a nice wet consistancy after a few minutes. Damp walls can cause salt deposits to appear – these can blow your plaster. Free returns. Learn more about Graphic Design Architectural Rendering | Victoria, BC. Mr. The Bonding coat should not be allowed to dry before application of the render or plaster. (we could render the side but not the back). You can use any Render bonding or gripping to prep & fix all render patches - use Polyurethane sealant for filling the recently opened cracks. The formula is solvent-free, making it more environmentally friendly by reducing pollution. Write a review.