With top trade brands available, offering great quality products, you'll be able to continue working even on the. 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. KIAB, Sep 18, 2015. (£1. Before adding any render, ensure the wall is damp to the touch, but not running with water. Discussion in 'Builders' Talk' started by Gary hunt, Oct 23, 2016. com. Suitable for a Variety of Applications. p) may be an overkill but this is how <u>PROPER</u> tanking should be done and hey better overkill now than taking it. Bostik 1kg Cementone Colours for Cement - Buff (47) £9. UK call centre ready for your call 24/7. First time doing render and there will be soil behind the wall but only to a depth of 300-400mm, should the back be left unrendered but with some waterproofing and drainage? Also thinking of putting some dpm behind the bottom of render as in attached pics or is this overkill! Any helpful suggestions welcome, thanks in advance!hi all,my mate wants me to re-render his damp bathroom. No waterproofer in render scratch coat. Delivery 7 days a week 60 days free credit available. + fill all gaps with new expanding foam. 99. 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. all the best. Render should be fully dry after a few months,doubt they added a water proofer to render, then it will soak up then rain,& then need to dry again, endless cycle. 24 kg. Order Bostik SBR Admixture White 5Ltr at Screwfix. Ask a question. Sets in 20 minutes. Once dry then add a cup full per mix of neat sealer in the water. 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. The DPC is there to stop raising damp, the rendering should be waterproof so it's not going to cause a raising damp issue, lots of houses have render right down to the ground level, though a lot of them will have a kicker plinth at the point of DPC to stop rain water running down the wall beyond the DPC, this. I plan to re-flaunch my chimney in April when weather improves. £21. We were looking at using a product like K-rend up to the coping stones. Inc. Mix approximately 4 to 5 litres of water per 25kg bag using an electrically driven mixer until you achieve a workable consistency. Rapid-setting waterproof cement. 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). PAGE 1 OF 2. Mix it strong say 3:1:1 or 3:1 plus plasticiser. £3. Suitable for new or renovated substrates, either unpainted or painted: gypsum plaster, old painted surfaces, cement, concrete, breeze blocks, bricks, stones, glass and. 96 per L . Scratch coat is 1 part cement, 1 hydrated lime, 5 plastering sand, with fibreglass mesh embedded. 5/5. Click & Collect. Quick-Dry Stabilising Solution. For picking up 1" use two coats of 1/2" each. 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. Prop the hose up splashing against the wall and go and have a cup of tea. i now have to patch it up, about a 2 inch strip. Screwfix Community Forum. Sealing porous areas and extending coverage with paint sealer will ensure a longer lasting coat. My builder is advising to render and d&d, but this seems like more work to me for no real reason. You should have. FREE Click & Collect within 30 minutes. Cement based coating for preventing water and damp penetration in walls and floors. Click and collect in as little as 1 minute. Interior Wood Paints. , Apr 8, 2005 #2. Order Bostik Waterproof Cement Grey 10kg at Screwfix. Order online at Screwfix. Colour coded for easy identification. 1. Suitable for 2. HandyAndy - really. View all: Mapei Shower Waterproofing Kits. 50/Kg)Product Details. Hang on, it's going white again. Protect your outdoor surfaces from the weather by coating them with black bitumen paint from Everbuild. The range has been hand selected from established brands, who manufacture durable products. You would usually add waterproofer to the scratch coat (base coat), & again to final/floating coat (top coat). I don't see why not to both questions. Discussion in 'Builders' Talk' started by questioner, Jul 6. In my experience you can take of the damaged parts and patch in, but personally I would take it all off and start again, making sure that a good key is achieved in the scratch coat (1st coat of render). £ 52. Buy Cement Mix at Screwfix. Suitable as a damp proof membrane on solid concrete floors. Weber One Coat Base Render 25kg £18. 40 per KG. #2. He came back and redid that area, and it leaks there worse than ever - it's just like a sponge. alrite mate, if the blocks bricks are sound(no cracks in joints or the bricks)you should wet down the surface(not to much)then scratch coat using a waterproofer and plasticiser,either when this has took up enough or the next day apply second coat again using plasticiser and you should be ok!(plasticiser helps retain air in the mix and. com. sharp is for screeding. Home Tags > waterproofer. If the wall is dry (unlikely this year!) lightly damp it without soaking it completely before applying the. 99Inc Vat. UK call centre ready for your call 24/7. Apply the render with a steel plastering trowel and scooping it from a plasterers hawk. today he's applying top coat with no waterproofer. Bostik Concrete Sealer 5L. Low toxicity. Daveukleics Member. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. If it could be dug down far enough then a waterproof render might be enough hallbeck, Jan 24, 2007 #3. VAT £6. Any thoughts anyone? Plumbcrazy,. (76 products) Aggregates and Chemicals are the components of a composite material which will resist stress providing a bulk to the composite material. The render around the mock Tudor beams on the outside of a property I am looking at is cracked. cement board and the masonry wall must be wiped down to. 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. 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. Dow 791 Weatherproof Silicone Sealant Anthracite 310ml (44836) (42) compare. Designed to function against water penetration in various conditions, it can be used in foundation slabs, tunnels,. If I render with febond sbr sand and cement render then I can use 10mm travertine tiles. Sika 1 Waterproofer is an aqueous solution containing complex colloidal silicates. Hi, My extension was built and rendered using a sand/cement render around 4 years ago. I know this is not the best route to go in waterproofing a wall normally. The traditional two coat rendering on a porous surface, i. Order online at Screwfix. At minimum, the rear of HardieBacker® 250. Also for repairing cracks and damaged stone edges. 93. com. Delivery. Phil. 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'. Waterproofs Plaster, Plasterboard, Plywood, Render & Concrete. View all: No Nonsense Cement Mix. OP, Now I can see why the fire wall and the stack have been rendered. When applied, Febtank Super forms crystals preventing water ingress and provides an extremely durable waterproof coating. the. That allows the material to be worked easier but as you may be aware render doesnt take a lot of working before it falls off the wall. FREE next day delivery available, free collection in 1 minute. Screwfix Community Forum. Designed to be used for plasterboard internal corners. Weather-Resistant. 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. The pointing needs raking out 25mm deep, and re-pointing with a 4:1 sand & lime mix. your. Buy Cement Mix at Screwfix. Free returns. you will then have a render. Waterproof a leaking roof. 2: Hydrophobic Coatings. There is a white crystal deposit under left on the exposed render. 4:1 with morticiser for scratch you can float next day with 5:1:1 sand, cement, lime + waterproofer in water butt. K Rend). This time, its butting up against 12mm plasterboard (painted) which was dabbed directly to the brick (no render). So I think the order from inside to outside should be:- inner skin, waterproof membrane, studding, insulation, blockwork and then your render. Having said that, there are proper ways to do it - a layer of Tyvek, staple on some. dougalhouse Member. Cement-based, rapid-setting flexible adhesive. 69. FREE next day delivery available, free collection in 1. The inside of the wet solid walls seems to covered in wet sand and a black paint type substance as in the photos. Pieces in Pack/Case. Secondly, if you did render them then a finish coat of plaster would be nigh on impossible to get right as sand would inevitably break away from the render into the top coat as the plaster is applied. ST100 104Ltr Spill Tray 795mm x 1195mm x 185mm (769HJ) compare. The earth is retained in the garden with another wall. Buy Cement Mix at Screwfix. Buy Aggregates & Chemicals at Screwfix. Contains 1,2-benzisothiazol-3 (2H)-one and reaction mass of 5-chloro-2-methyl-2Hisothiazol-3-one and 2-methyl-2H-isothiazol-3-one (3:1). Mixing: Add the SBR undiluted to the mix and then adjust the consistency with clean water. Buy Multi Purpose Fillers from Screwfix. Discussion in 'Builders' Talk' started by Pagloss, Apr 6, 2006. Coverage: Approximately, 1 litre of SBR per sq metre at. Delivery. 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. 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. Low Odour. Two thin render coats. 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. Suitable for interior and exterior use. Advice on mix varies. By doing it this way you have. e. • Gives coverage of approximately 2 – 4 m² per litre per coat. waterproof render. Cemenmt render will dmage the wall eventually - its not ok to do it. If you wait then water will get in behind it and more and more will fall off. If it was my place I definately would not paint it. 99 Inc Vat. Ideal for emergency repairs, filling and patching. too much suction 4:1 will do you. Volume. 5m x 0. 99 Inc Vat. Do what the gardener should have done. Coverage per Litre: 6m²/Ltr. 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. Extremely durable and will adhere to any substrate for filling and repairs with no depth limit. 5010214804764. Preparation of the surface to be painted with gloss. 99Inc Vat. com. View all: Bostik Specialist Paints. Render mix. Tarmac Once Coat Render is a pre blended render, just add water to apply. com. 3) waterproof paint the bottom exposed brick. Screwfix customers rate this product 4. But I'll have a go. Is there anything I can do now. FREE next day delivery available, free. Strong fibreglass mesh tape that helps reinforce plaster coating and protects it from cracking. (£1. waterproof render will work however yoy need to overcome the possibility of presure pushing the render off. 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. This has now altered a little and it will often look like a kind of crazy paving which I belive are cracks in the dash which is allowing water into. 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. The wall is an external leaf, subject to high prevailing salty winds and has had dampness for years. DIY_Has123, Feb 3, 2021. Stops penetrating damp on brickwork and masonry. #10. Need some professional advice on waterproofing my 3ft garden flowerbed retaining wall. Run a hose against it. £17. 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. She got the guy back and he said 'oh well, it hasn't worked, you need the place tanking which. 99 Inc Vat. A waterproof render is more a damp proofer than a waterproofer. Exterior rendering is, I think, a more manageable beast that, say, internal skimming. You might wonder why you need two (or more) coats. Bonding is not a good idea on external walls, it attracts water to it. £12. 1-2hrs Approximate Setting Time. Asked at the garden centre, what to do to stop it soaking in. After application by brush, roller or spray; Stormdry provides breathable protection against rain penetration on exterior weather-facing walls. im rendering onto concrete blocks on the outside of my new shed/workshop. Phil the Paver Screwfix Select. This is your 'drip-tray' separating the above and below dpc areas. £ 28. Everbuild Solvented Grab Adhesive 350ml (6048H) (245) compare. 99 Inc Vat. . Can be used to seal joints between tiles, stone and brick slips and pointing around lead flashing. Artifical Grass Adhesive 5kg. When this is complete, lay the concrete floor with the membrane overlapping the tanking by a generous margine. Hi handy 007 1/2. With regards the tile adhesive Devils advocate is sound advice. . Can be used for rendering, roughcast, pebble dashing, harling and above ground waterproofing. 19 each (Inc. This waterproofer penetrates deep into the brickwork whilst still allowing the surface to breathe. Fill holes and cracks with ease, suitable for many applications. He came back and redid that area, and it leaks there worse than ever - it's just like a sponge. cautious New Member. Click & Collect. Water & Weather-Resistant. Find your nearest Screwfix store and up to date opening times. Home Forums > Screwfix Community Forum > Builders. Acrylic frame sealant is ideal for internal use to fill. Mr. I recently bought a bungalow, it was built 1970. common sense tells you that this system will go nowhere and it wont. PVA wall first. 202 Integral Liquid Waterproofer is a liquid additive that provides long term water protection to mortar, concrete and rendering. Must be quite loose, but not too runny. 100% Polyethylene Construction. PAGE 1 OF 2. Overcoat 48-72 hours after application with any standard water-based masonry paint or mineral. Will adhere without primer even on slightly damp surfaces. 1. Home Forums > Screwfix Community Forum > Builders' Talk > Waterproofing. ★★★★★ ★★★★★. Fischer FIS V Zero 300T Injection Mortar 300ml (498HL) compare. Silicone render and waterproofing for penetrating damp. Not if you’re using lime, paint a waterproofer on after Watch the weather, spray bottle at the ready keep it damp, and don’t curse when the scratch coat cracks Abrickie , May 21, 2020Plumbcrazy New Member. Pieces in Pack/Case. i have a freshly scoured brick wall, having recently removed half an inch of old powdery paint layers. It's like comparing a totally waterproof jacket costing £500 with a 'showerproof' jacket costing £25. drill driver, Jun 21, 2005. Product code. If you use an oil based paint, thin it 50/50 and use that as a cover coat. We encourage you to debate the topics and issues of the day in a friendly manner, whether related to trade/DIY or not. Generally, 5 litres of SBR per 25kg bag of cement in an external render for an area of normal exposure. I would get your render on soon so the block work can dry out. The paint has been fine until this very wet spring, when it started to bubble and peel in large random areas. #2. 4m²/Ltr. But I'll have a go. Hundreds of stores nationwide. Order Thompsons Drive Seal Black 5Ltr at Screwfix. Product Type. 8/5. If you are in a bit of a wild area, then consider epoxy - two-pack - masonry paint. . Mastercrete has improved resistance to the cracks caused by freeze/thaw attack when compared to traditional cement. General purpose, solvent-based. I am also used 3:1 evermix plasticizer / waterproofer / retardant in the mix towards a strong ratio. It’s great for waterproofing outside areas that are liable to be damp, humid or continuously exposed to water or steam. Pay your way. £13. The wall has a cavity with no insulation and about 150mm above the damp course. It incorporates a Polymer bonding aid allowing the results. Product Type. Home Forums > Screwfix Community Forum > Builders' Talk > Damp wall render. £9. Best chech out the additive that has been used with the manufacturer. 6/5. Substrates which are highly absorbent or gypsum must be pre-treated with Primer G (usually diluted with water at a ratio of 1:1 or 1:2 to ensure thorough penetration). Handyandy, With your technical knowledge of paint it is a relief that you don't work as as brain surgeon with an equivilent knowledge of neurology. Screwfix Community Forum. #3. Most can be used on all common surfaces, and as a decorative trim or door paint. com. Items are easy to install and use while. At present it’s a thin coat of sand and cement mix with metal beading that’s rusty, on top of Accrington brick. 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. 1 Year Guarantee. 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. Sika Waterproof Coating Grey 5kg (83502) (67) compare. Delivery 7 days a week. 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. Sanitary Fixings Kits. Screwfix customers rate this product 4. Mix was about the same consistensy as for laying bricks. 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). High performance waterproof treatment for exterior porous surfaces. Sika Bond SBR+ Waterproof Bonding Agent and Mortar Admixture - 25L (6) £99. A couple of potential problems come to mind; concrete on a stud wall will almost certainly crack and fracture over time - I think. What mortar mix, 3:1? ArthurFirstly internal walls do not need rendering with sand and cement but a base coat of plaster is used instead such as Bonding or Browning. The render goes right down to the ground outside. Corrosion-Resistant. Currently in Stock. 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. Buy Roof Repair Products at Screwfix. If the wall is wet, not sure trapping the damp in the wall in under new. 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. Easily secure a wide range of applications in place. #4. 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. 5 apply new finish. Sika Proof Liquid Waterproofing Admixture is a general purpose, ready to use, economic waterproofing admixture for mortars and concretes. Using 4 :1 first coat and 6:1 second with waterproofer. Easy returns, with 30 day money back guarantee. Choose this handy pre-mixed sand and cement render from Weber to cover brickwork, blockwork, concrete and other suitable surfaces. Tapes suitable for a range of materials stocked. Delivery. Many can be painted over to match the colour of your windows or frames. com. Most if not all are painted with mansonry paint, (Specialist applications excepted, eg. Primer Not Required. This coat should be applied while the first coat is still. Buy Fixings & Fastenings at Screwfix. Extremely durable and will adhere to any substrate for filling and repairs with no depth limit. Latest Offers At Screwfix. 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. 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. I now have a choice, either to continue with the original plan (not so keen on that idea now) or to re-point the worst bits and then apply a waterproof lime wash. Use on brick, concrete and stone. But it has no brick exterior wall. Suitable for brush application only. Then sharp sand fine, lime, cement in 6: 1: 1 ratio as top coat. 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. This ready to use Sikagard facade from Sika is a water based impregnation emulsion. Phil the Paver Screwfix Select. 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). Mr. 99 Inc Vat. The fine aggregates are suspended in a unique waterproof polymer to ensure easy application by roller or brush. My sister had her coal cellar done last year, and the guy used Sika 1, then rendered and plastered over it. Ensure wall is sound, clean and ready to receive HardieBacker®. Discussion in 'Builders' Talk' started by Cmd38, Sep 21, 2020. Expect someone to come along with more modern alternatives. Time is of the essence as access is via scaffold in my neighbor's yard and they want it gone. 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. 1/ clean all walls of loose material. Fine. Product Details. 310 ml. That will last. Weather Shield say leave it until Spring. 1. Discussion in ' Builders' Talk ' started by roger waters, Sep 11, 2006 . £11. 99 Inc Vat Click & Collect Not available for delivery Buy Bonding Agents at Screwfix. Screwfix Community Forum. 99 Inc Vat. Order online at Screwfix. poolthetool is spot on. Recycled Polypropylene Construction. £9.