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. PVA sealer is an extremely versatile, odourless, waterproof and non-toxic adhesive that is suitable for a multitude of tasks and requirements. Home Forums > Screwfix Community Forum > Builders' Talk > Render Waterproofer. thanks gent. For Interior & Exterior Use. That's not to say lets seal the moisture in the bricks. The inside of the wet solid walls seems to covered in wet sand and a black paint type substance as in the photos. Suitable as a damp proof membrane on solid concrete floors. £13. Covers up to 4m². Handyandy - really. I added Sika MaxMix concentrated integral waterproofer, but not sure I used enough as I added it to the gauging water and not the weight of the mix and the sand was damp. Currently in Stock. Mr. Applying the board directly onto the membrane with thin adhesive and mushroom fixings. You capture lots of potential issues in one go, including new ties and new DPC, and probably the opportunity for some insulation. 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. rogerk101 Screwfix Select. Weather-Resistant. #9. Is there anything I can do now. 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. Weberend One-Coat Base Render (OCR) is a versatile pre-blended single coat application render, ideal for rendering brickwork, blockwork and concrete. Use stainless steel bellcast/render stop beads as req. 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. 5 Ltr. fillyboy Screwfix Select. Thanks for the help Alastair. 8/5. 3) waterproof paint the bottom exposed brick. Â New Member. You can sand down the corners as far as poss and put a few coats of red oxide or any other number of magical rust cures, I've done it a few times, it will buy you a year or two. Ready to Use. Waterproofs Plaster, Plasterboard,. Hazard safety codes: Xi, R36, R38, R52, R53. Order online at Screwfix. Deme23 New Member. Buy Resins at Screwfix. It’s in such bad shape that you can push your finger quite easily into it and it comes away like wet sand. uk. How many coats do you reckon fort he top coat?Water resistant bonding agent for external rendering and screeds; Admixture for concrete repair and tile fixing mortars; For improving resistance to abrasion, chemicals and oils; Reduced shrinkage and cracking; Improved workability, waterproofing and mechanical properties; Approx consumption : 5 - 7 Litres per 25Kg cementOrder online at Screwfix. Daveukleics Member. Breathable masonry paint is essential for waterproofing your exterior bricks while allowing moisture to escape from inside your house. 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. £9. 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. Low Odour & Solvented. Screwfix Community Forum. After application by brush, roller or spray; Stormdry provides breathable protection against rain penetration on exterior weather-facing walls. 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. Screwfix Community Forum. 49. Waterproof a leaking roof. Contact the team today by calling 0161 509 9009 or emailing info@emperorpaint. Handyandy, Oct 23, 2005. Free returns. With 10mm for the scratch coat and 8mm for the top coat. There are only three walls as it backs on to to a neighbours shed. You shouldn't use PVA for external render however they do make an external grade one but this isn't necessary. 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. In fact, cracks are still appearing now, nearly a year on. Render, Bricklaying and Floor Screeds. There's render up to about one metre all the way around the room, then its a 'board & dab' job up to the ceiling. The earth is retained in the garden with another wall. No waterproofer in render scratch coat. Wall fillers and flexible fillers create a clean smooth and professional finish. Write a review. 8/5. 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. I'm quite a confident diy'er and wanting to try rendering a garden wall for the first time. This Everbuild 402 Water Seal is a sealant that stops water wear on brickwork, stone masonry, concrete, pebbledash and other exterior walls. Pieces in Pack/Case. Apply a bitumen or Pitch Epoxy coating from the outer edge of your 'slope' all over the existing dpc and up the wall 150mm. Can be used for rendering, roughcast, pebble dashing, harling and above ground waterproofing. Two thin render coats. In December I had a 2 foot earth retaining wall built in my garden to separate the garden from the patio. Truth be told I've already bought six 10L tubs of Sandtex and the stabilising solution, about over a year ago. Click & collect in stores nationwide. Free returns. Hi, I have an 1910 solid brick, no cavity built house that is all pebble dashed. Volume. Hello. 99 Inc Vat. When diluted with water it produces a gauging solution for improved adhesion, workability and waterproofing of mortars and cementitious mixes. Internal Skimming of conservatory walls. Forms a transparent, waterproof barrier. OP, Now I can see why the fire wall and the stack have been rendered. Water & Weather-Resistant. Can anyone tell me which is the best silicon based waterproofer they have used for waterproofing an exterior stone wall. com. Water Seal. Screwfix Community Forum. Less water in your mix, by making sure the plas does its intended job gives a lighter easier to spread render and will also float much earlier and will also rule off with ease which means it will hardly even need a float. Come back the next day if you like, and see what sort of waterfall you have running down the back of the wall. I’m leaning more towards K rend, as it’s silicone and. 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. com. common sense tells you that this system will go nowhere and it wont. Screwfix customers rate this product 4. View all: Bostik Specialist Paints. Render is max 10-15mm thick. Apply Water Seal directly onto damp surfaces to provide long lasting waterproof protection within hours. 1 remove lose stuff. 40 per KG. At certain points the garden is upto a foot higher than. May produce an allergic reaction. Best chech out the additive that has been used with the manufacturer. 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). 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. £ 24. Screwfix Community Forum. From what I’ve read on this very helpful forum, it’s a water/salt problem. Big Jumbo, Jul 27, 2009. After starting he informed me that. Masonry cream is snake oil, it does nothing. I've attached some images. SKIP19C THOMPSONS WTRSEAL ULTRA WTRPRFG. Will not corrode steel reinforcement (brick ties etc. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. Leaving me a few mm to be skimmed. I would appreciate a little advice on the making of the waterproof render,thanks. 14th edition, Oct 12, 2017 #1. 5mm² Cables. G4 Pond Sealer Clear. Can I tile onto render that has been made up with plastering sand and Sika1 waterproofer or should I plaster then tile? It is a process that helps make an object or structure waterproof or water-resistant, meaning it remains relatively unaffected by water. These can be used for a range of projects, whether it is to create a flat a smooth surface with a compressive strength, preventing water and damp penetration in walls and. I’m doing the patio and the. qwas123 Screwfix Select. Reduces water penetration without acting as a vapour barrier. This is called Feeze-Thaw action, which allows more water in, gradually. Contains primer, coating and waterproof jointing tape. I've heard bad things about Sika, re: not being suitable for moxing in a cement mixer: online at Screwfix. I intend to apply sandtex stabilising solution and then sandtex fine texture paint which say's it has a breathable waterproofer in it. Should be ok to overpaint SBR with masonry paint. This would be better off in plastering forum. Volume. Phil the Paver Screwfix Select. Phil the Paver, Nov 22, 2014. It's like comparing a totally waterproof jacket costing £500 with a 'showerproof' jacket costing £25. Building a stud wall with a damp-proof membrane and insulating it. Screwfix customers rate this product 4. Products reviewed by the trade and home improvers. the waterproofer will not work!!!!!the top coat must be at least 6 parts WASHED sharp sand 1 part lime 1 part cement {opc}. Screwfix Community Forum. Presume you have slope away, try to start with nothing at dampcourse (should remain below dampcourse). . com. today he's applying top coat with no waterproofer. Corrosion-Resistant. Extra grip, render bonding agent that contains a fine aggregate to provide an improved mechanical key before applying render on external. Mix it at 5-1 sand - cement with waterproofer. 99 Inc Vat. Jesus some ridiculous answers. High performance waterproof treatment for exterior porous surfaces. Glazing and frame sealants come in a variety of acrylic and silicone based sealants, used to keep your home free from water ingress. 99 Inc Vat. sharp is for screeding. My builder is advising to render and d&d, but this seems like more work to me for no real reason. I wouldn't bother with grinding the wall either just scratch 4-1-1 sand-cement-lime with waterproofer. Hi Guys. Minimum application temperature. Float at 5:1:1 Builders sand : OPC : LIME with waterproofer in the water How does that sound? 2. You would usually add waterproofer to the scratch coat (base coat), & again to final/floating coat (top coat). the rendering is the easy bit. 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. For easy application Tarmac One Coat Renders contain polymers. Effective sealer for waterproofing damp walls. Apple Pay accepted in store. Screwfix Community Forum. Recycled Polypropylene Construction. Not available for delivery. Lead-Free. 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). Phil the Paver Screwfix Select. It has many uses, and is suitable for most porous. The paint has been fine until this very wet spring, when it started to bubble and peel in large random areas. Light grey colour when dry. 5 apply new finish. Option No. Apply with Brush or Roller. I don't trust my builder and although he assured me he put waterproof additives within the render I do not believe him. Screwfix customers rate this product 4. Rapid-setting waterproof cement. Mr. com. 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. Delivery. Waterproof PVA. As well as offering protection, exterior wall paint improves the appearance of a property by brightening it up and bringing it back to life. 1. 4:1 with morticiser for scratch you can float next day with 5:1:1 sand, cement, lime + waterproofer in water butt. Provides a hard wearing, protective layer on wood, metal and cement. 99 Inc Vat. Single application waterproofing compound for emergency repair and general maintenance of most roof types. 'A' way to do it is this. Overcoat 48-72 hours after application with any standard water-based masonry paint or mineral. 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. 93. Frame sealant is flexible and designed to withstand UV, weather and water exposure. G4 Pond Sealer Clear. This ready to use Sikagard facade from Sika is a water based impregnation emulsion. £59. Mr. 69. Ricky Johnson New Member. #2. Latest Offers At Screwfix. 90. . Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. The garage is being used as a semi heated workshop hence the insulation, but I don't forsee any great generation of moisture within. This'll make sure it's drawn into the render to provide a nice primed surface. For Interior & Exterior Use. Softwashing is the best way of cleaning your render. Product Type. 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. Hazard safety codes: R22, R36, R38. Completed an extension last summer and the exterior walls were cement rendered the usual way with waterproofer etc. Float at 5:1:1 Builders sand : OPC : LIME with waterproofer in the water How does that sound? 2. £6. Touch-Dry in 6 Hours, Fully Dry in 24 Hours. If you don`t want waterproofer at least use a plasticiser or lime. Suitable Application. PVA is a water-insoluble resin which is typically white at the point of application, but dries colourless and has a high bonding strength. Ideal for emergency repairs, filling and patching. View all: Sika Waterproof Sealants. Waterproofing Block Building. 99Inc Vat. FREE next day delivery available, free collection in 1 minute. 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. Waterproofs Plaster, Plasterboard, Plywood, Render & Concrete. Click & Collect. The front apex has often shown signs of water ingress as the mortar lines underneath are often visible after heavy rain. Over 40,000 products. From waterproof adhesive to glass adhesive, it is important to choose the right glue for the job. Buy Roof Repair Products at Screwfix. 95 Ex VAT. • Drying time of around three to four hours. Ideal for emergency repairs, filling and patching. Can anyone tell me which is the best silicon based waterproofer they have used for waterproofing an exterior stone wall. #2. Buy 3 for £11 - View Offer. Sanitary Fixings Kits. dj. but the property is in a really exposed position in the Penninnes, built of sandstone, it is grade 2 listed, and the mortar it is pointed with. 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. ★★★★★ ★★★★★. The render around the mock Tudor beams on the outside of a property I am looking at is cracked. The product can also be used to protect retaining wall structures. • Apply in temperatures from +5°C to +25°C. But I'll have a go. By getting the finish coat on within 8. £26. Doozergirl said: In a word, no. 5 Ltr. Exterior decorators acrylic for sealing around exterior window and door frames in most building substrates. com. Buy Ready Mixed Plaster at Screwfix. When applied, Febtank Super forms crystals preventing water ingress and provides an extremely durable waterproof coating. Blue Circle Hydralime Hydrated Lime 25kg. Order online at Screwfix. , Apr 8, 2005 #2. giving a lighter easier to work gauge of mortar. 'A' way to do it is this. We were looking at using a product like K-rend up to the coping stones. Not available for delivery. Scratch coat is 1 part cement, 1 hydrated lime, 5 plastering sand, with fibreglass mesh embedded. Many can be painted over to match the colour of your windows or frames. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. Screwfix Community Forum. unless you do a lot of good drainage behind it and seal it with something more waterproof than render. Will this be enough. 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. No waterproofer in render scratch coat. #10. Is there anything I can do now. Designed to be used for plasterboard internal corners. INNER WORLD DESIGN & BUILD LIMITED. Find directions and contact info, read reviews and browse photos on their 411 business listing. im rendering onto concrete blocks on the outside of my new shed/workshop. 8. Delivered by our approved supplier, Find out. com. Slow setting time makes it ideal for covering large areas in one application. com. I know I need to attach mesh to the surface, but a friend has told. The formula is solvent-free, making it more environmentally friendly by reducing pollution. £17. Suitable for brush application only. The fact that it's a retaining wall means that it's going to be damp, almost by definition. The correct method is as follows:- 1st coat (scratch coat) 3:1 sharp sand with waterproofer and scratched. whats a good method to clean off the scratch coat which has been exposed for some years and is. Good luck. Light Grey. FREE next. Page 1 of 2 1 2 Next > Thread Replastering around doorframe with very uneven brick walls. 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. The wall is an external leaf, subject to high prevailing salty winds and has had dampness for years. FREE next. com. £27. Click & Collect. Discussion in 'Builders' Talk' started by Bungditin. Seeking a bit of advice, been waiting for my plasterer to come and do my external rendering. Â , Jan 25, 2008For 'normal' render this would be a day or more, but with SBR in the mix, it should be no MORE than 8 hours? I assume that if you did leave it a day between scratch and finish coats, when using SBR in the render, you should prime the scratch coat surface before applying the finish coat with SBR slurry mix. Any thoughts anyone? Plumbcrazy,. Sharp sand coarse and fine, lime and cement in 2 : 2: 1 :1 ratio for bottom coat ( scratch ) coat, with waterproofer. Use on exterior house and building walls, on concrete and brick built surfaces. Cement mix and mortar mix are ideal for a large selection of tasks including pointing brickwork and stone, repairing concrete and render and filling holes or setting posts. Good luck. DIYDave22 New Member. Fine. I'm having to strip back and re render the walls where the shower is going as the plaster is poor and has been sealed with pva i think. 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. 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. It failed in one area, and cracked off the wall. Primer paint is required as an undercoat before applying the upper layers to any surface. Buy Exterior Paints at Screwfix. Ideal for emergency repairs, filling and patching. Hi, My extension was built and rendered using a sand/cement render around 4 years ago. 2: Hydrophobic Coatings. Run a hose against it. Covers up to 4m². My qustion is: Will I need to use a (waterproofing?) additive to the render mix, particularly for the inside surfaces of the drain. unfortunately came home yesterday and all covered in scratch coat with no waterproofer. Paint it on and when its dry, do it again, as the wall has sucked all the moisture from the render that you had put on earlier and that is why it's 'crumbly'. co. I'm painting a house at the moment and the customer wants a more long term solution so I'm cutting away 4" of render either side of the corner. Screwfix Community Forum. Give them a good scrub or pressure wash and tidy up the pointing. 1. These products are suitable for use on a variety of materials and can be applied by hand with minimal tools. Tarmac One Coat Render is a pre blended render that can be applied in one coat for patch repairs or larger rendering projects. Then simply follow the manufacturer's painting guidelines perfectly. 4/immediately the last coat is on and while still wet, blind with sand. drill driver New Member. Best chech out the additive that has been used with the manufacturer. Sets in 20 minutes. 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. This not painted at the time as suspected water ingress problem however this issue now resolved. Not available for delivery. Exterior rendering is, I think, a more manageable beast that, say, internal skimming. £9. Is either expanding foam, or white silicone OK in this situation (inside of course, render with waterproof mix on the outside)? Cold & Heat-Resistant. 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. Brickie might. Can be applied onto a damp. To ensure thorough waterproofing of your exterior walls, you need a coating that will actively repel water. 49Inc Vat. Sika Waterproof Coating Grey 5kg (83502) (68) compare. 6/5. OK. I have a small area (2. 8/5. and the level of the intended patio is a brick above the existing damp course in that specific wall. Sometimes i use wire ( render lathe to all you young spreads ). K Rend). Hi, I wonder if anyone can help/ offer some advice as we’re at our wits end. When dry paint to match. 5mm thick maybe more on old uneven walls it has a waterproof addative in the mix. Softwashing Render. com. I have waterproofer and unibond. com. Product Type.