It incorporates a Polymer bonding aid allowing the results. Click & Collect. Customer lives close to coast will the salt in the air have any impact on my. cautious New Member. Hi handy 007 1/2. Most if not all are painted with mansonry paint, (Specialist applications excepted, eg. We also don’t think it’s had waterproofing mixed in. Primer Not Required. Good Luck. Mould & Mildew-Resistant. After that, 2 topcoats of a good quality masonary paint, and job done. High bond strength. UK call centre ready for your call 24/7. The fine aggregates are suspended in a unique waterproof polymer to ensure easy application by roller or brush. Weberend One-Coat Base Render (OCR) is a versatile pre-blended single coat application render, ideal for rendering brickwork, blockwork and concrete. Delivery. Fast-Drying. Is unibond OK 2. No waterproofer in render scratch coat. Use on brick, concrete and stone. Stops penetrating damp on brickwork and masonry. Neville the tap dancing gibbon, Sep 2, 2006. 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. DIY_Has123 Active Member. Air entraining – will not “flatten” the mix. Come back the next day if you like, and see what sort of waterfall you have running down the back of the wall. Home Forums > Screwfix Community Forum > Builders' Talk > Waterproofing. I've slapped a PVA solution to brickwork on internal walls prior to render, I GUESS that this situation is no different. Waterproofing Block Building. What depth should the battons for the scratch coat be? I was looking at 10-15 mm deep off the wall. com. Mix approximately 4 to 5 litres of water per 25kg bag using an electrically driven mixer until you achieve a workable consistency. 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. £3. For Interior & Exterior Use. 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. Sika Waterproof Coating Grey 5kg. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. waterproof render will work however yoy need to overcome the possibility of presure pushing the render off. 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. 2/5. Sika Proof Liquid Waterproofing Admixture is a general purpose, ready to use, economic waterproofing admixture for mortars and concretes. This not painted at the time as suspected water ingress problem however this issue now resolved. shazauk New Member. Domestic & commercial use. Can anyone tell me which is the best silicon based waterproofer they have used for waterproofing an exterior stone wall. Pieces in Pack/Case. Mix approximately 4 to 5 litres of water per 25kg bag using an electrically driven mixer until you achieve a workable consistency. Primer Not Required. This is your 'drip-tray' separating the above and below dpc areas. Not available for delivery. Buy Cement Mix at Screwfix. The exterior is rendered and i'm pretty sure its trapping water in the walls and just driving it in. B) To seal around the bathtub - I am planning on using the Schluter Kerdi TS Bath and Shower Sealing Kit. have 2, or even 3 cups of tea. Construction Project Manager, May 29, 2015. UK call centre ready for your call 24/7. This is to avoid spraying the chemicals which can then drift in. 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. Touch-Dry in 6 Hours, Fully Dry in 24 Hours. Went on white. Screwfix Community Forum. 5 Ltr. It sets to a rock-hard finish and can be overcoated in 24 hours. 8/5. Insulates and protects wiring. General purpose, solvent-based. 2nd coat (floating coat) 4:1 sharp sand with waterproofer as above etc. Click & Collect. Screwfix customers rate this product 4. It’s in such bad shape that you can push your finger quite easily into it and it comes away like wet sand. Using colour dyes to a render coat would not work because the colour would fade over time even if you did achieve a uniformed initial colour when batching up. £ 28. Delivery 7 days a week. Contact the team today by calling 0161 509 9009 or emailing info@emperorpaint. p) may be an overkill but this is how <u>PROPER</u> tanking should be done and hey better overkill now than taking it. They have for example render products which are waterproof, yet breathable. £ 27. . 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. Softwashing is the best way of cleaning your render. I am after some advice if poss. Use a mixer and measure quatities using a bucket for consistency. Prepare walls by straightening them out with a two coat render system and a waterproofer agent added to mix. £9. Can anyone give me advice on rendering over Medium Density Blocks for an external garage. (£5. + silcone the windows. Also with spring weather being variable in temperature, would you recommend covering. Sikagard Facade makes walls and. only one left wet. Waterproof. you can use it for rendering but it's much more difficult to rub up. A-. com. Is vital that the waterproofer is added in the correct amounts according the the manufactures instructions. Show More. Hi there, I need to find a suitable, waterproof render for a wetroom. When applied, Febtank Super forms crystals preventing water ingress and provides an extremely durable waterproof coating. My question is what do I need to do to the surface to prime/seal it before the top coat? I intend to finish off with a Dulux exterior weathershield paint. This will depend on the surface of which it's being applied and the strength of hold required. Overcoat 48-72 hours after application with any standard water-based masonry paint or mineral. Apply the render with a steel plastering trowel and scooping it from a plasterers hawk. Suitable for a Variety of Applications. This is especially important if you apply a thick traditional multi-coat plaster. Waterproof a leaking roof. £7. there is a waterproof pva available which some say would work ok, but the consensus here is that either sbr or a sand/cement. ie. 99 Inc Vat. As per usual there are so many different videos etc on the web it can get confusing. 90 Ex VAT. The correct method is as follows:- 1st coat (scratch coat) 3:1 sharp sand with waterproofer and scratched. Delivery Next day available. Waterproof. dj. Find your nearest Screwfix store and up to date opening times. PAGE 1 OF 2. I know when we do the top coat it's gonna suck the moisture out like crazy. Cold & Heat-Resistant. Coverage per Litre: 6m²/Ltr. K Rend). One Coat Render can be used For interior and exterior use and has been formulated for single coat. Buy Additives & Plasticisers from Screwfix. 4 use mechanical fixings to fix this system to the wall. 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. Total Product Weight. Product code: 252325. I've panelled it off with 3/4" exterior ply, fitted a stop-bead (or whatever it's called) along the bottom edge, and am now looking for advice on how to prepare the surface for rendering, please. If it could be dug down far enough then a waterproof render might be enough hallbeck, Jan 24, 2007 #3. com. Fillers and Putty are used to fill or seal holes, cracks, or gaps prior to further decorating. Suitable as a damp proof membrane on solid concrete floors. 2) Fit a bellcast. KIAB Super Member. Dig out the soil behind the wall, put a sheet of dpm against the wall, drill through the wall at low level every metre and fit a pipe to act as a drain hole, part fill the trench with grave, put soil in the rest, trim the dpm to ground level and re-render. Supplied in a graduated bucket. Delivered by our approved supplier, Find out. Render mix. Step 6 – Apply First Coat of Render to Wall. From waterproof adhesive to glass adhesive, it is important to choose the right glue for the job. Remove as much dust as you can and apply a decent coat , you may want to apply a second , then throw sand over the area of bitumen this will help key the render , the next day apply a scratch coat over area and leave until dry , apply top coat of render and set to finish. Hi, My extension was built and rendered using a sand/cement render around 4 years ago. ★★★★★ ★★★★★. Just soak the walls with a hose pipe scratch with a mix of 4:1 plastering sand : opc and float with 5:1:1 plastering sand : opc : lime, with waterproofer dosed in your butt. Buy Fixings & Fastenings at Screwfix. I don't trust my builder and although he assured me he put waterproof additives within the render I do not believe him. The earth is retained in the garden with another wall. 5mm plasterboard to the wall, and then skim. #2. Â New Member. Buy Aggregates & Chemicals at Screwfix. DIY_Has123, Feb 3, 2021. Home Forums > Screwfix Community Forum > Builders' Talk > Help with Rendering please Discussion in ' Builders' Talk ' started by mikethesmoke , Apr 26, 2009 . Volume. Suitable for new or renovated substrates, either unpainted or painted: gypsum plaster, old painted surfaces, cement, concrete, breeze blocks, bricks, stones, glass and glazed tiles. Screwfix Community Forum. 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. You can use metal beads for all windows and angles and drip beads for your bell. 90min Approximate Setting Time. Or it could look like an unfinished wall (which, of course, it is ) I think it looks good in these photos. 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. £9. Click and collect in as little as 1 minute. Volume. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. A friend has given me some acrylic render (premixed tubs 25kg) which is a topcoat, and more than enough to do the job. Click & Collect. The fact that it's a retaining wall means that it's going to be damp, almost by definition. What depth should the battons for the scratch coat be? I was looking at 10-15 mm deep off the wall. Click & Collect. 8m)above newly-fitted french doors to render. These products enable a way to effectively aid in water removal as well as keeping other area’s watertight. (76 products) Aggregates and Chemicals are the components of a composite material which will resist stress providing a bulk to the composite material. 5m x 0. For Cement Based Mixes. Also for repairing cracks and damaged stone edges. . FREE next day delivery available, free collection in 1 minute. gauge everything put the water in the mixer then add the lime to the. ★★★★★ ★★★★★. For the coloured top finish you require you use coloured sand and not coloured cement. 45/Kg) Once that dries, I can then apply 2 coats of render (scratch + 2nd coat). Phil the Paver, Nov 22, 2014. It is supplied in the form of a deeply penetrating cream that is applied to the wall surface using a roller or brush. 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. He came back and redid that area, and it leaks there worse than ever - it's just like a sponge. £9. Most traditional renders are applied in two coats; a base coat and a topcoat. 1/ clean all walls of loose material. Two thin render coats. He uses plastering sand and cement mixed at a 3:1 ratio with waterproofer added, no lime or plastisiser. For picking up 1" use two coats of 1/2" each. It produces a superior. ★★★★★ ★★★★★. Ideal for internal and external use as a waterproof render, it is suitable for use on walls prior to plastering and on floors prior to self-levelling. Phil the Paver Screwfix Select. The real question is is galvinised mesh ok. Run a hose against it. + fill all gaps with new expanding foam. Order online at Screwfix. But I'll have a go. 8/5. It's like comparing a totally waterproof jacket costing £500 with a 'showerproof' jacket costing £25. I know I need to attach mesh to the surface, but a friend has told. oggie78 New Member. Not available for delivery. Volume. If in the top coat the waterproofer or water resistance(r) may/fail and then damp has every chance of getting through. you. Truth be told I've already bought six 10L tubs of Sandtex and the stabilising solution, about over a year ago. It is all studded then waterproof membrane & has expanded mesh over it and then its rendered. High Bond Strength. 99 Inc Vat. DIYDave22 New Member. Low Odour & Solvented. Handyandy Screwfix Select. I would then like to render it. Product Type. Suitable for a Variety of Applications. Then sharp sand fine, lime, cement in 6: 1: 1 ratio as top coat. Does any one else have the nightmare of render falling off in patches once the. 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. 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. I have been trying to use sand and cement with waterproofer (everlast) to level it out but unsure if I'm doing it right. com. Waterproof. FREE next day delivery available, free collection in 1 minute. There are only three walls as it backs on to to a neighbours shed. Float at 5:1:1 Builders sand : OPC : LIME with waterproofer in the water How does that sound? 2. Totally forgot as was so busy myself and only had a spare few days to do it. The. Recycled Polypropylene Construction. waterproofing paint. It Is single skinned and with render onto boards which were lined with fibreglass mesh. 41 Per unit £1. Ideal for use on swimming pools, water tanks, ponds, below ground concrete, as well as for render and floor screeds for water resistant applications. Home Forums > Screwfix Community Forum > Other Trades Talk > waterproofing internal rendering Discussion in ' Other Trades Talk ' started by woodburner , May 16, 2006 . 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. View all: Bostik Cement Mix. 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. Free next day delivery available. Screwfix customers rate this product 4. Create a smooth base. your. A-. Render question. £6. VAT £15. Product Type. 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. Option No. TDav Member. Not available for delivery. But overmix using Fairey and the mix becomes a foamy mass of bubbles with very limited final strength. Click and collect in as little as 1 minute. 8. G4 Pond Sealer Clear. Mix it at 5-1 sand - cement with waterproofer. £17. This is the only part on the whole house which shows this and I belive I. Sharp sand coarse and fine, lime and cement in 2 : 2: 1 :1 ratio for bottom coat ( scratch ) coat, with waterproofer. Getting the mix spot on is the key!Stormdry is a colourless [1], breathable, water-repellent treatment for brick, concrete and stone [2] walls. 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. Suitable Application. Find directions and contact info, read reviews and browse photos on their 411 business listing. Stores are open 7 days a week. Tapes suitable for a range of materials stocked. Thermalite hedge their bets somewhat on their finishes section. 5m x 0. I know when we do the top coat it's gonna suck the moisture out like crazy. drill driver, Jun 21, 2005. (the actual water drainage path, which looks like its made of half a sewer pipe is actually in good condition, so its only the. 99Inc Vat. 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. Bostik Concrete Sealer 5L. The garage is being used as a semi heated workshop hence the insulation, but I don't forsee any great generation of moisture within. Screwfix - Rapid-setting waterproof cement. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. UK call centre ready for your call 24/7. put your water in the mixer and then add a shovel of lime ,let it mix up for a minute and add 6 shovels of sand, half a bag of extra special cement and another 6 shovels of sand. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. Covers up to 4m². £26. My idea is to remove the lose render from around the window (as I have started to do already) + remove any old foam. com. 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. Permaproof Waterproofer - Render Additive 5L. Click & Collect in as little as a minute. normal bricks and most blocks, calls for a 1:1:6 mix for the scratch coat; cement, lime and sharp sand (3mm to fines). Page 1 of 2 1 2 Next > Thread Replastering around doorframe with very uneven brick walls. I will be using metal studs to make the framework and lining it in OSB3. 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). Covers approx. Forms a transparent, waterproof barrier. I wouldn't re-render - leave the bricks open to the air. External wall is rendered. There's render up to about one metre all the way around the room, then its a 'board & dab' job up to the ceiling. Rake out the brickwork joints (say 5mm) to give the render something to 'hang on' to. 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. Because it's durable, weather-resistant and breathable, Weber one coat render is particularly useful for outside areas that are exposed to the weather, like garages, conservatories or garden walls. Order online at Screwfix. Handyandy - really Mr. #3. You should have. Use it as a bonding agent, primer, sealer and. Use a waterproofer additive. Easy returns, with 30 day money back guarantee. Light Grey. There is a white crystal deposit under left on the exposed render. Delivery Next day available. Waterproof render for external earth retaining garden wall!!! Discussion in 'Builders' Talk' started by oggie78, Apr 7, 2009. Use on Plasterwork, Skirting Boards, Windows & Door Frames. Remove as much dust as you can and apply a decent coat , you may want to apply a second , then throw sand over the area of bitumen this will help key the render , the next day apply a scratch coat over area and leave until dry , apply top coat of render and set to finish. the rendering is the easy bit. At minimum, the rear of HardieBacker® 250. DIY_Has123 Active Member. Hi, I am going to render round the bottom of the bay windows, would it be a good idea to use integral waterproofer? One of the bays is north facing so never gets much sun. 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. #10. Discussion in 'Painters' Talk' started by Joelfc89uk, May 24, 2018. £30. Suitable for brush application only. He came back and redid that area, and it leaks there worse than ever - it's just like a sponge. Read more. Considering that you nickpuff seem to be the only person that is unable to decipher plain English I will help you out a little. As well as waterproofing, this product also helps to prevent condensation and efflorescence, keeping structures in great condition for longer. yesterday morning i put on a scratch coat, with rendering sane and castle cement ( ordinary portland cement it say in the bags) i used a 5-1 mix and i mad sure but using buckets, normally i would cut a bag in. The old one is of crumbling brick and an (equally crumbling) smooth cement render. Inc. 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. It sets to a rock-hard finish and can be overcoated in 24 hours. You capture lots of potential issues in one go, including new ties and new DPC, and probably the opportunity for some insulation. He ended up really busy so we decided i'd. Mr. These products are suitable for use on a variety of materials and can be applied by hand with minimal tools. blertsville, Jul 4, 2011. 99. Suitable for new or renovated substrates, either unpainted or painted: gypsum plaster, old painted surfaces, cement, concrete, breeze blocks, bricks, stones, glass and. It looks like I'd need 3 different types to do the job properly with that stuff but it looks like good stuff. Sets in 20 minutes. Done a good job apart from i didn't put waterproofer in. 5 kg. 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. Leaving me a few mm to be skimmed. Reduces water permeability. Use it after clearing. Screwfix Community Forum. My builder is suggesting cutting 100mm of it away at the bottom to let it breath. I have seen many threads about lime / no lime and whether you should waterproof on the scratch coat / finish coat etc etc. 88 Inc VAT-+ Add to Basket. #2. Doozergirl said: In a word, no. qwas123 Screwfix Select. Suitable for interior and exterior use. com. Neville the tap dancing gibbon, Sep 2, 2006. Does this sound good to you. Im asking for some advice on the best way to repair this. The paint has been fine until this very wet spring, when it started to bubble and peel in large random areas. Contains enough to waterproof a standard sized shower. 1 Year Guarantee. If you do not want to change the appearance of these walls then use a masonry waterproofer (two coats). Discussion in 'Builders' Talk' started by Bungditin. 99 Inc Vat. Developed to repair damaged masonry between brick and stonework. Ideal for locations such as basements. Acrylic frame sealant is ideal for internal use to fill. com. PAGE 1 OF 2. We would like to show you a description here but the site won’t allow us. 2/ render the walls. com. IKOpro Synthaprufe Trade is easy to apply and provides damp proofing for concrete floors, foundations and masonry walls below, at or above ground level. you will then have a render. im rendering onto concrete blocks on the outside of my new shed/workshop. . And all this after the walls were skimmed and painted. Fast-setting, polymer-enhanced, cement-based repair mortar. Should you wish to brighten up these surfaces then use the Weathershield masonry paint system (old render may require a coat of stabilising solution first). Volume. The render mix I plan on using for the scratch is 5 sand, 1 cement, 1 lime, splosh of waterproofer, for the top coat, 6:1:1 but no waterproofer. Will this be enough. when i removed the old wood it crumbled so i pulled it all off. Apply a bitumen or Pitch Epoxy coating from the outer edge of your 'slope' all over the existing dpc and up the wall 150mm. Easy to shape and can be used on a variety of rough masonry surfaces including cement, concrete, breeze blocks, bricks and stones. Bostik Waterproof Cement Grey 10kg (58196) Bostik Waterproof Cement Grey 10kg. Fixing sheets with tile adhesive, step 1. Exterior rendering is, I think, a more manageable beast that, say, internal skimming. Forms a transparent, waterproof barrier. 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. Thanks for the help Alastair. This is an interior wall but yes its a wall with a window and other side is exterior. 25 Year Waterproofing from a Single Coat . Screwfix customers rate this product 4. Available in different variants, it is important that the right basecoat paint is chosen for the job.