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. My builder is advising to render and d&d, but this seems like more work to me for no real reason. 6/5. I know this is not the best route to go in waterproofing a wall normally. Choose this handy pre-mixed sand and cement render from Weber to cover brickwork, blockwork, concrete and other suitable surfaces. For Interior & Exterior Use. Scratch coat is 1 part cement, 1 hydrated lime, 5 plastering sand, with fibreglass mesh embedded. handyman 2 New Member. Tarmac One Coat Render is a pre blended render that can be applied in one coat for patch repairs or larger rendering projects. This sealant is suitable for for repelling water on porous surfaces. ie. Thistle One Coat Plaster 7. You can use metal beads for all windows and angles and drip beads for your bell. One Coat Render is a high quality, pre-blended formulation, for single coat application reducing total drying time. Extremely durable and will adhere to any substrate for filling and repairs with no depth limit. There is no insulation or a cavity. The wall has been constructed out of 7n concrete breeze blocks and before i backfill i need to waterproof, it needs to be plant friendly. Delivery. Never heard of the 4 weeks / mould thing before. I don't trust my builder and although he assured me he put waterproof additives within the render I do not believe him. #10. Is either expanding foam, or white silicone OK in this situation (inside of course, render with waterproof mix on the. 4 use mechanical fixings to fix this system to the wall. 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. Phil. Sika 1 Waterproofer is an aqueous solution containing complex colloidal silicates. Includes 2 Countersunk Screw Holes for Workbench Fixing. The. good heavy scratch will help to reduce the suction, dont leave the floating coat after the scratch too long, very important that you reduce the suction or your scratch will turn to dust when it dries out too fast. 4-1 first coat and 5-1 second coat 3-1 is to strong it will be to brittle and might crack. Volume. waterproof finish of say, a gloss paint, and finding that underneath is very soluble. . 99 Inc Vat. 99 Inc Vat. Provides a hard wearing, protective layer on wood, metal and cement. Choose from top trade brands. damp down the area your about to work on to get rid of the dust. Hello. If it could be dug down far enough then a waterproof render might be enough hallbeck, Jan 24, 2007 #3. Most if not all are painted with mansonry paint, (Specialist applications excepted, eg. Sika Waterproof Coating Grey 5kg (83502) (68) compare. Provides superb weather protection for bricks, mortar and concrete. I understand that the waterproofer will do what it says on the tin, but only if in the first coat and then covered by another coat of render. com. Delivery Out of stock for delivery. Sometimes i use wire ( render lathe to all you young spreads ). . Ideal for emergency repairs, filling and patching. Bricks are non porous, that's why houses are made of them. Volume. com. We would like to show you a description here but the site won’t allow us. I have a small area (2. Supplied in a graduated bucket. drill driver, Jun 21, 2005. Bostik Waterproof Cement Grey 10kg (58196) Bostik Waterproof Cement Grey 10kg. unfortunately came home yesterday and all covered in scratch coat with no waterproofer. 99Inc Vat. FREE next day delivery available, free collection in 1 minute. • Air entraining plasticiser • Prevents shrinking and cracking during curing • Water reducing • Chloride freeMortar plasticiser for stronger, easier to use brick and block-laying mortar. Furthermore, the stabilising solution and PVA will both act to keep any moisture within the concrete, hence why you experiencing problems. Screwfix Community Forum. £6. Dow 791 Weatherproof Silicone Sealant Anthracite 310ml (44836) (42) compare. B) To seal around the bathtub - I am planning on using the Schluter Kerdi TS Bath and Shower Sealing Kit. Before adding any render, ensure the wall is damp to the touch, but not running with water. First of all you need to get the mix right first coat needs to be 4-1-1, 4 sand 1 cement and 1 lime and 1 cup of waterproofer. £3. Will this be enough. If you wait then water will get in behind it and more and more will fall off. Asked at the garden centre, what to do to stop it soaking in. The pointing needs raking out 25mm deep, and re-pointing with a 4:1 sand & lime mix. Deme23 New Member. Discussion in ' Builders' Talk ' started by roger waters, Sep 11, 2006 . 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. Over 40,000 products. 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. INNER WORLD DESIGN & BUILD LIMITED. Fast-Drying. Victor Lek Member. Home Forums > Screwfix Community Forum > Painters' Talk > Painting render. FREE Click & Collect within 30 minutes. £21. Do I have to waterproof the blocks first or use a waterproofer in the render?As expected all the windows seem to be missing the silcone and allowing water to get in. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. I know I need to attach mesh to the surface, but a friend has told. I have waterproofer and unibond. What depth should the battons for the scratch coat be? I was looking at 10-15 mm deep off the wall. 99Inc Vat. I usually rule it off,fill the hollows and then leave it until it starts to get firm (dependent on the background I know). The inside of the wet solid walls seems to covered in wet sand and a black paint type substance as in the photos. Delivery Next day available. If I render with febond sbr sand and cement render then I can use 10mm travertine tiles. DIY_Has123 Active Member. Im nervous about it cracking so please can you confirm the correct mix to use. Learn more about Graphic Design Architectural Rendering | Victoria, BC. One Coat Renders is a high quality, pre-blended render mix, for single coat application on solid substrates such as brickwork, blockwork and concrete, in moderate exposure conditions. Delivery Next day available. Ideal for emergency repairs, filling and patching. Touch-Dry in 6 Hours, Fully Dry in 24 Hours. Coverage per Litre: 6m²/Ltr. 5/ plaster to suit. com. Can be used for rendering, roughcast, pebble dashing, harling and above ground waterproofing. Buy Cement Mix at Screwfix. your. ★★★★★ ★★★★★. £3. Bonding is not a good idea on external walls, it attracts water to it. 4) Remove the damp plasterboard internally, remove the wet sand, waterproof paint the brick internally and. Inc. 1. 2: Hydrophobic Coatings. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. The biggest problem with a single-skin external wall is condensation which most people confuse with rising damp. With regards the tile adhesive Devils advocate is. Mix approximately 4 to 5 litres of water per 25kg bag using an electrically driven mixer until you achieve a workable consistency. . Right have got to render the side of a concrete pad and would like to mix a rapid hardener and frost-proofer additive together with a waterproofer additive to use in the mix. Light Grey. koolpc and SeaJay like this. Screwfix customers rate this product 4. AC50 Trade Acoustic Adhesive & Sealant 900ml. 'A' way to do it is this. Pay your way. Contact the team today by calling 0161 509 9009 or emailing info@emperorpaint. 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. 96 per L . Step 6 – Apply First Coat of Render to Wall. I use to put waterproofer in both coats, but some peeps on do scratch coat. com. i have a freshly scoured brick wall, having recently removed half an inch of old powdery paint layers. 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. too much suction 4:1 will do you. 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. So I think the order from inside to outside should be:- inner skin, waterproof membrane, studding, insulation, blockwork and then your render. ★★★★★ ★★★★★. It looks like I'd need 3 different types to do the job properly with that stuff but it looks like good stuff. 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. You've done the right thing by removing the render to above the DPC, if yo rendered the lower apart again you'd have to leave a 1" gap which would fill with crud and lead to the DPC being bridged again. Just wanted to check what mixture of sand/cement I need to use for the render for this? is it Scratch coat of 4:1 sharp sand to cement and then top coat of 5:1 sharp sand to cement? Do I need to do any waterproofing? Looking to get something like in the attached. Exterior rendering is, I think, a more manageable beast that, say, internal skimming. Waterproof. Waterproof render (sika 1) on the walls and d&d insulated plasterboard. Just. Reduces water penetration without acting as a vapour barrier. What do you reckon is the prime time to float finish render. FREE next day delivery available, free collection in 1 minute. It produces a superior. I would appreciate a little advice on the making of the waterproof render,thanks. Waterproofs Plaster, Plasterboard,. Render is max 10-15mm thick. the case is, it is a kitchen area, i have plastered 4 walls, 3 dried completely. Buy 3 for £11 - View Offer. 1st coat scratch 1:1:4 (OPC:lime:sand), 2nd coat 1:1:5. Low toxicity. 5mm² Cables. Scud the wall first with 1:1 sand/cement next day dampen down before rendering with the hose, thermalite are a pig to render unless you are quick. I know I need to attach mesh to the surface, but a friend has told. Use on brick, concrete and stone. 7/5. This can take from between 24 hours up to two days, depending on humidity, temperature, and airflow around the building. External wall is rendered. Delivery. 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. Search titles only By: Search Advanced search…Eco Prim Grip Plus 5kg. Screwfix customers rate this product 4. Can anyone tell me which is the best silicon based waterproofer they have used for waterproofing an exterior stone wall. 80/Ltr)I am building an outdoor kitchen for gas bbq etc. The internal walls are damp from floor to ceiling and I am told by a specialist damp firm that the damp is due to the cracking. £ 27. Suitable for the damp proofing of interior masonry wall surfaces. Discussion in 'Builders' Talk' started by Bungditin. £6. I've slapped a PVA solution to brickwork on internal walls prior to render, I GUESS that this situation is no different. . Delivery. Depending on the ratio you used for waterproofer/water in your mix you should find that the render is virtually weatherproof. £11. Products reviewed by the trade and home improvers. DIY_Has123, Feb 3, 2021. It is only about 2 months old is it possible I can have a a company in to lay k-rend straight onto the render?The plas will work its way into the mix and soften down the mix as it turns. Latest Offers At Screwfix. I would have used a 'Monocouche Render' like Weberpral M, or K Rend both are coloured all the way through, available in many colours, saves painting. From what I’ve read on this very helpful forum, it’s a water/salt problem. 3) waterproof paint the bottom exposed brick. Use stainless steel bellcast/render stop beads as req. com. VAT) Quick. £17. £179. Product code: 139057. Screwfix Community Forum. 99 Inc Vat. After application by brush, roller or spray; Stormdry provides breathable protection against rain penetration on exterior weather-facing walls. 'A' way to do it is this. Mastercrete has improved resistance to the cracks caused by freeze/thaw attack when compared to traditional cement. Nail straight pieces of timber vertically & horizontally as required to external corners, window & door reveals. Using 4 :1 first coat and 6:1 second with waterproofer. In December I had a 2 foot earth retaining wall built in my garden to separate the garden from the patio. The Bonding coat should not be allowed to dry before application of the render or plaster. have 2, or even 3 cups of tea. Product Type. The earth is retained in the garden with another wall. Heat-Resistant. com. The Screwfix Community Forum strives to be a friendly and supportive place, where you can share your expertise, ask others for theirs, and enjoy ‘socialising’ online with people who share a common interest. Artifical Grass Adhesive 5kg. You should have. General purpose, solvent-based. use feb rendamix with your render (also sold by screwfix) this helps waterproof the render you can render down to the ground but I would advise a gap between 1/2 to 1" with a flare at the bottom to push any rain away from the brick the gap. 2 coats of 1:4 cement:sand render with waterproofing admix, first (scratch) coat 12 - 15mm with scratches to gove a key to the finish coat 5 - 8mm, 24 hours in between coats. Totally forgot as was so busy myself and only had a spare few days to do it. Cementone Freeflo Plasticiser is a retarding waterproofer and plasticiser. Ideal for fixings in perforated brick, solid brick, concrete and aerated concrete. Delivery 7 days a week 60 days free credit available. 69. If it's a cavity, before you go down the render route, go find a builder and ask him how much to rebuild the outer skin of the end gable wall. There are many external finishes - Finedown (smooth as in photos), Tyrolean, Pebble dash etc. What depth should the battons for the scratch coat be? I was looking at 10-15 mm deep off the wall. 4 use mechanical fixings to fix this system to the wall. Brickie might. FREE next day delivery available, free collection in 1 minute. The render on the outside should waterproof the wall anyway. At present it’s a thin coat of sand and cement mix with metal beading that’s rusty, on top of Accrington brick. Order Sandtex Quick-Dry Stabilising Solution 5Ltr at Screwfix. A nightmare rendering on smooth lightweight blocks, hate it. I have been trying to use sand and cement with waterproofer (everlast) to level it out but unsure if I'm doing it right. Wet room Kits consists of a mix of products which are needed when creating an open plan showering area. At minimum, the rear of HardieBacker® 250. DIY_Has123 Active Member. Reduce cracking and shrinking when mortaring with this SBR bonding agent from Everbuild. Show More. Rake out the brickwork joints (say 5mm) to give the render something to 'hang on' to. There's render up to about one metre all the way around the room, then its a 'board & dab' job up to the ceiling. Evening guys. PAGE 1 OF 2. Order Bostik Waterproof Cement Grey 10kg at Screwfix. Not available for delivery. If you use an oil based paint, thin it 50/50 and use that as a cover coat. They have for example render products which are waterproof, yet breathable. Click & Collect. The first coat is known as the scratch coat, and is applied in a thin layer and left to cure. For External Use. 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. . Phil the Paver Screwfix Select. White sand can be bought in15kg bags and gauged with snow cem white cement and hydrated lime for a perfectly white finish, but even so in time this will discolour and fade and will. 5. Odourless & Solvent-Free. 4/immediately the last coat is on and while still wet, blind with sand. Screwfix customers rate this product 4. Fillers and Putty are used to fill or seal holes, cracks, or gaps prior to further decorating. com. com. Delivery. qwas123 Screwfix Select. Order Bostik SBR Admixture White 5Ltr at Screwfix. Developed to repair damaged masonry between brick and stonework. KA Tanking Slurry is the complete crystalline solution to waterproofing masonry and blockwork. Not available for delivery. i have a freshly scoured brick wall, having recently removed half an inch. That's not to say lets seal the moisture in the bricks. My sister had her coal cellar done last year, and the guy used Sika 1, then rendered and plastered over it. Order Bostik General Purpose Mortar Grey 5kg at Screwfix. £59. Buy Cement Mix at Screwfix. I will be using metal studs to make the framework and lining it in OSB3. 49 Inc Vat. Daveukleics Member. Free returns. 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. FREE next day delivery available, free collection in 1 minute. Masonry paints are specifically for exterior use and will protect a property from weathering and pollution. He came back and redid that area, and it leaks there worse than ever - it's just like a sponge. Ideal for locations such as basements and cellars or for external coating for concrete, brick, block and bonded renders. 5 Ltr. Buy Cement Mix at Screwfix. £ 52. Waterproof. Order online at Screwfix. Add for Delivery. . Then simply follow the manufacturer's painting guidelines perfectly. Fixing sheets with tile adhesive, step 1. This sealant is suitable for for repelling water on porous surfaces. Light Grey. 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. Mould & Mildew-Resistant. Permaproof Waterproofer - Render Additive 5L. So I. this mock tudor job i am doing has part of the render overlapping the lead flashing along the biottom. This is an interior wall but yes its a wall with a window and other side is exterior. ST100 104Ltr Spill Tray 795mm x 1195mm x 185mm (769HJ) compare. 99 Inc Vat. 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. Click & Collect. 99. 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 enable the first coat of G4 pond sealer to bond and obtain a. Big Jumbo, Jul 27, 2009. • 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. 6 January 2021 at 10:22PM. very big difference. I'm no pro on this, but have done a lot of research into it. I'm quite a confident diy'er and wanting to try rendering a garden wall for the first time. £13. 1:20 rather than the more dilute 1:40 option. I don't see why not to both questions. thanks, I keep reading that you shouldn't use cement render when a wall is built with lime or cob but because it will not breath but it has already been hard rendered on the outside so therefore it is already been. UK call centre ready for your call 24/7. I have asked a local builder to re-read our chimney as it was badly cracked and had started to let water into the loft. Discussion in ' Builders' Talk ' started by Fussy Spark, Dec 27, 2020 . A complete crystalline solution for waterproofing masonry and blockwork. 99 Inc Vat. Sikagard Facade makes walls and. don't pva the wall either first coat with waterproofer in and second coat with waterproofer in also. Use a firm hand to. £ 14. FREE next day delivery available, free collection in 1 minute. 90 Ex VAT. The paint has been fine until this very wet spring, when it started to bubble and peel in large random areas. Suitable for brush application only. Click & Collect in as little as a minute. Is unibond OK 2. Mix it at 5-1 sand - cement with waterproofer. 2nd coat (floating coat) 4:1 sharp sand with waterproofer as above etc. He ended up really busy so we decided i'd. Buy Resins at Screwfix. Screwfix - Rapid-setting waterproof cement. PAGE 1 OF 2. I have been quoted between £600-£800 to re render the shed (just got the one quote so far so I have no idea if I can get this done cheaper)Installation on brick walls. £39. £9. With 10mm for the scratch coat and 8mm for the top coat. Covers approx. Brick waterproofer to help prevent damp on bricks & masonry. Use a mixer and measure quatities using a bucket for consistency. Coverage: Approximately, 1 litre of SBR per sq metre at. Primer Not Required. Frame sealant is flexible and designed to withstand UV, weather and water exposure. Hi Guys. Provides a hard wearing, protective layer on wood, metal and cement. Suitable for 127mm Wide Coving. 2/ render the walls. PayPal accepted online. waterproofing paint. poolthetool is spot on. 49. 2) Fit a bellcast. 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. So you need to fit a waterporoof membrane undernearth your inner skin over the studding. Does any one else have the nightmare of render falling off in patches once the. Currently in Stock. £7.