Ive been told 3:1 (2 parts sharp, 1 part builders sand) and not as wet as mortar for bricklaying. Mr. 99. Hi, I have an 1910 solid brick, no cavity built house that is all pebble dashed. General purpose, solvent-based. The waterproofs range offers you a selection of colours and sizes to suit your needs while keeping you dry throughout your working day. Home Forums > Screwfix Community Forum > Builders. £ 14. There are specialist products on the market such as those available from Sika or Flexcrete which are technically advanced and suit this purpose. 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. Blue Circle Hydralime Hydrated Lime 25kg. For extra certainty use a render bonding agent such as Sika Rendagrip as a priming coat. 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). This'll make sure it's drawn into the render to provide a nice primed surface. i have a freshly scoured brick wall, having recently removed half an inch. I'm quite a confident diy'er and wanting to try rendering a garden wall for the first time. I have a small area (2. 99 Inc Vat. Masonry paints are specifically for exterior use and will protect a property from weathering and pollution. the render has retarder/waterproofer in it. Jesus some ridiculous answers. PAGE 1 OF 2. Waterproofs Plaster, Plasterboard, Plywood, Render & Concrete. Mixing: Add the SBR undiluted to the mix and then adjust the consistency with clean water. 99 Inc Vat. PVA Sealers. Run a hose against it. Items are easy to install and use while. ★★★★★ ★★★★★. 5m x 0. 90. High bond strength. Let it dry for a couple days. 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). Unibond PVA is renowned for being the only BBA accredited PVA in the UK, and we stock Unibond super PVA with a high bond strength for gluing ceramic tiles, carpets, plaster and much more. It sets to a rock-hard finish and can be overcoated in 24 hours. Includes 2 Countersunk Screw Holes for Workbench Fixing. You could have asked the plasterer to add a waterproofer to the render mix, but it's obviously too late now. 4:1 with morticiser for scratch you can float next day with 5:1:1 sand, cement, lime + waterproofer in water butt. From what I’ve read on this very helpful forum, it’s a water/salt problem. 5 Ltr. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. too much suction 4:1 will do you. 99 Inc Vat. Product Type. Render mix. Product Type. com. Bostik Waterproof Cement Grey 10kg (58196) Bostik Waterproof Cement Grey 10kg. Hundreds of stores Nationwide. 90min Approximate Setting Time. Can be brushed or spray applied. Crack & Frost-Resistant. Mix it at 5-1 sand - cement with waterproofer. Will depend on the type of silicon, and will only work with oil based paint. and the level of the intended patio is a brick above the existing damp course in that specific wall. com. I have used a slurry coat first of. AC50 Trade Acoustic Adhesive & Sealant 900ml. Covers up to 4m². Currently in Stock. Render thickness seems to be between 5 and 10 mm. slapiton New Member. It failed in one area, and cracked off the wall. B) To seal around the bathtub - I am planning on using the Schluter Kerdi TS Bath and Shower Sealing Kit. (42 products) Gloss paints are used to provide a high shine finish to interior or exterior surfaces. Walls are old super dense concrete blocks. 90m x 50mm. Rapid-setting waterproof cement. 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. 1 remove lose stuff. . Fischer FIS V Zero 300T Injection Mortar 300ml (498HL) compare. ex. £3. High performance waterproof treatment for exterior. oh! and ladies. Sika Proof improves the impermeability and absorption. Screwfix Community Forum. View all: Bostik Specialist Paints. Good shout? Also, not location of air bricks. Waterproof PVA. Delivery. Ideal for emergency repairs, filling and patching. Click & Collect. 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. The 2nd. 99 Inc Vat. Out of stock. Choose from top trade brands. Will adhere without primer even on slightly damp surfaces. Will this be enough. Cement-based, rapid-setting flexible adhesive. Stops penetrating damp on brickwork and masonry. Waterproofer in Render? Discussion in 'Builders' Talk' started by TDav, Sep 9, 2018. Buy Additives & Plasticisers from Screwfix. Hazard safety codes: Xi, R36, R38, R52, R53. Pay your way. My plan is: 1) Cut back the render from the ground. Hang on, it's going white again. For Interior & Exterior Use. FREE next day delivery available, free collection in 1 minute. Odourless & Solvent-Free. 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. damp down the area your about to work on to get rid of the dust. Using 4 :1 first coat and 6:1 second with waterproofer. He ended up really busy so we decided i'd. com. 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. 49. right quick little question, got to render gable end of a house. Tarmac One Coat Render is a pre blended render that can be applied in one coat for patch repairs or larger rendering projects. Product information. com. i know its best to take the wall back to brick,but should i add a waterproofer to the floating coat (common sense says yes) as per external render,and if so what type? i have'nt been. 99Inc Vat. This is the only part on the whole house which shows this and I belive I. Low Odour & Solvented. 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. 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. The real question is is galvinised mesh ok. Buy Cement Mix at Screwfix. I have waterproofer and unibond. Forms a transparent, waterproof barrier. Ensure wall is sound, clean and ready to receive HardieBacker®. Thistle One Coat Plaster 7. The pointing needs raking out 25mm deep, and re-pointing with a 4:1 sand & lime mix. 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. The Bonding coat should not be allowed to dry before application of the render or plaster. Suitable for 2. FREE next. com. Available in different variants, it is important that the right basecoat paint is chosen for the job. setting manholes and repairing rendering and floor screeds. Question is 1. Covers Approx. The fine aggregates are suspended in a unique. Aggregates & Chemicals. Repels water on wood, brick, concrete, paving, asbestos and cement. Home Forums > Screwfix Community Forum > Builders' Talk > Is Artex Render Waterproof? Discussion in 'Builders' Talk' started by DIYDave22, Nov 8, 2023 at 5:34 PM. View all: Bostik Cement Mix. HandyAndy - really. 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. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. FInish with horizontal scratches for a key. 5. Can be used for rendering, roughcast, pebble dashing, harling and above ground waterproofing. Any recommendations based on the wall being made from dense blocks?If you were re-rendering the house you wouldnt put a waterproofer on first. 3. Applied waterproof PVA. common sense tells you that this system will go nowhere and it wont. 5mm thick maybe more on old uneven walls it has a waterproof addative in the mix. Is Artex Render Waterproof? Discussion in 'Builders' Talk' started by DIYDave22, Nov 8, 2023 at 5:34 PM. Covers approx. Suitable for the damp proofing of interior masonry wall surfaces. I’m doing the patio and the. Search Activating the button will move focus to the expanded search input fieldContains primer, coating and waterproof jointing tape. You might wonder why you need two (or more) coats. Building a stud wall with a damp-proof membrane and insulating it. Apply your floating coat (finish) and use a bit of 2X1 vertically to rule off with and form the curve, any slacks (indents) fill them with more render then rule again, will be awkward to plastic float so finish off with a rung out sponge lightly over for best result, dont forget the waterproofer in the finish mortar mix. Recycled Polypropylene Construction. Render, Bricklaying and Floor Screeds. Sharp sand coarse and fine, lime and cement in 2 : 2: 1 :1 ratio for bottom coat ( scratch ) coat, with waterproofer. £34. Apply with Brush or Roller. com. Considering the size of the job I'll just use the stuff from Screwfix for this. Overcoat 48-72 hours after application with any standard water-based masonry paint or mineral. PVA sealer is an extremely versatile, odourless, waterproof and non-toxic adhesive that is suitable for a multitude of tasks and requirements. blertsville, Jul 4, 2011. Can be applied onto a damp. Order Sandtex Quick-Dry Stabilising Solution 5Ltr at Screwfix. 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. There are many external finishes - Finedown (smooth as in photos), Tyrolean, Pebble dash etc. For Interior & Exterior Use. Left it a day, then filled with water. 99Inc Vat. Reduces water permeability. For use on solid substrates such as brickwork, blockwork and concrete, in moderate exposure conditions. com. The render on the outside should waterproof the wall anyway. It is a solution for nothing. Tags:. 1/ clean all walls of loose material. High performance waterproof treatment for exterior porous surfaces. Don't try and apply render in one coat it will only sag and probably fall off wall. PVA Sealers. Heat-Resistant. Wire brush the exposed walls to be sure that there is no mould on the. One Coat Render is a high quality, pre-blended formulation, for single coat application reducing total drying time. I would then like to render it. Inc. 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. When this is complete, lay the concrete floor with the membrane overlapping the tanking by a generous margine. . 5 Ltr. The builder has incorporated PVA into the traditional render. Buy Cement Mix at Screwfix. Buy Cement Mix at Screwfix. Can be used to seal joints between tiles, stone and brick slips and pointing around lead flashing. roof king, Sep 17, 2010. Slow setting time makes it ideal for covering large areas in one application. com. £8. handyman 2 New Member. One Coat Render can be used For interior and exterior use and has been formulated for single coat. Adheres to damp masonry and is weather-resistant. Login to save for later. Simple to use, just mix with water. 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. Pieces in Pack/Case. Order online at Screwfix. FREE next day delivery available, free collection in 1 minute. com. £45. I would appreciate a little advice on the making of the waterproof render,thanks. PVA wall first. FREE next. Preparation of the surface to be painted with gloss. Lead-Free. Reduce cracking and shrinking when mortaring with this SBR bonding agent from Everbuild. 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. Waterproof. Seeking a bit of advice, been waiting for my plasterer to come and do my external rendering. However as an temporary repair would it be OK to remove the loose render, apply unibond and then use Waterproof cement from Evo-stik - idea being this sets in 20 mins. . Order Sandtex Quick-Dry Stabilising Solution 5Ltr at Screwfix. 5 apply new finish. 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. Screwfix Community Forum. whats a good method to clean off the scratch coat which has been exposed for some years and is. final coat of render needs to. This is your 'drip-tray' separating the above and below dpc areas. As it dries then rough up the surface to match the surrounding render. Order Bostik SBR Admixture White 5Ltr at Screwfix. Order online at Screwfix. Thermalite hedge their bets somewhat on their finishes section. Hello. Truth be told I've already bought six 10L tubs of Sandtex and the stabilising solution, about over a year ago. Screwfix Community Forum. 1 originaly and it was too rough to work with,managed to get 2 coats on 1 area straight away no probs. #9. 35°C. I’m doing the patio and the intention is to fill the void. you can hose down the scratch coat just before you. FREE next day delivery available, free collection in 1 minute. 5010214804764. Waterproof. • Air entraining plasticiser • Prevents shrinking and cracking during curing • Water reducing • Chloride freeMortar plasticiser for stronger, easier to use brick and block-laying mortar. Discussion in 'Builders' Talk' started by Victor Lek, May 24, 2022. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. No waterproofer in render scratch coat. I've slapped a PVA solution to brickwork on internal walls prior to render, I GUESS that this situation is no different. 6 January 2021 at 10:22PM. Click & Collect. Hundreds of stores nationwide. 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. Order online at Screwfix. Order online at Screwfix. Free returns. unless you do a lot of good drainage behind it and seal it with something more waterproof than render. Currently in Stock. Write a review. Neville the tap dancing gibbon, Sep 2, 2006. very big difference. 99Inc Vat. 90 Ex VAT. He came back and redid that area, and it leaks there worse than ever - it's just like a sponge. Protect your outdoor surfaces from the weather by coating them with black bitumen paint from Everbuild. Microseal Technology. Will fill without depth limit and repair without formwork. Render - smooth finish. So it'll be damp from behind (penetrating damp) and damp from below (rising damp), so not much to be gained by. #10. If you really want belt and braces, then seal it with a clear sealer, then you won't have to paint it every few years. Screwfix - Rapid-setting waterproof cement. £9. Weather Shield say leave it until Spring. 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. 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. com. We are ready for your call 24/7. Screwfix customers rate this product 4. the. The fine aggregates are suspended in a unique waterproof polymer to ensure easy application by roller or brush. 96 per L . We're getting a lot of confusing/conflicting information regarding painting it: How soon can it be painted (weather permitting of course, it's in Brecon) Sandtex tell me their products aren't compatible with PVA, therefore not to use it. The garage is being used as a semi heated workshop hence the insulation, but I don't forsee any great generation of moisture within. Apply a bitumen or Pitch Epoxy coating from the outer edge of your 'slope' all over the existing dpc and up the wall 150mm. The moisture will force its way out eventually. 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. Click & Collect. This will depend on the surface of which it's being applied and the strength of hold required. Float at 5:1:1 Builders sand : OPC : LIME with waterproofer in the water How does that sound? 2. 202 Integral Liquid Waterproofer is a liquid additive that provides long term water protection to mortar, concrete and rendering. Exterior decorators acrylic for sealing around exterior window and door frames in most building substrates. ex. Discussion in ' Builders' Talk ' started by roger waters, Sep 11, 2006 . im rendering onto concrete blocks on the outside of my new shed/workshop. 2: Hydrophobic Coatings. cautious New Member. Product Details. Fast-Drying. 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. Touch-Dry in 6 Hours, Fully Dry in 24 Hours. UK call centre ready for your call 24/7. So you need to fit a waterporoof membrane undernearth your inner skin over the studding. Provides a hard wearing, protective layer on wood, metal and cement. Mastercrete has improved resistance to the cracks caused by freeze/thaw attack when compared to traditional cement. 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. Waterproofing Block Building. Scratch the coats with a scrating tool looks a bit like a large afro comb or make one with a bit of batten and some nails. Our team of experts are on hand to help you at every step of the process. The old injection attempt has not worked, and neither has the inside attempt to render to 1m ht. Use a firm hand to. Done a good job apart from i didn't put waterproofer in. Discussion in 'Builders' Talk' started by ssss64, Jan 23, 2007. £9. Using a small grinder, cut out all loose chunks of render - & open all sketchy cracks. KIAB Super Member. A couple of potential problems come to mind; concrete on a stud wall will almost certainly crack and fracture over time - I think. This is an interior wall but yes its a wall with a window and other side is exterior. 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. Screwfix customers rate this product 4. ★★★★★ ★★★★★. Fixing sheets with tile adhesive, step 1. Sandtex Ultra Smooth Masonry Paint Pure Brilliant White 10Ltr (23771) (573) compare. Offers long term durability with no gusting wind noise. I know when we do the top coat it's gonna suck the moisture out like crazy. Screwfix customers rate this product 4. Interior Wood Paints. I intend to apply sandtex stabilising solution and then sandtex fine texture paint which say's it has a breathable waterproofer in it. It is a process that helps make an object or structure waterproof or water-resistant, meaning it remains relatively unaffected by water. Hi there, I need to find a suitable, waterproof render for a wetroom. £6. You can do it. When diluted with water it produces a gauging solution for improved adhesion, workability and waterproofing of mortars and cementitious mixes. We encourage you to debate the topics and issues of the day in a friendly manner, whether related to trade/DIY or not. FREE Click & Collect within 30 minutes. rogerk101 Screwfix Select. com. PVA is a water-insoluble resin which is typically white at the point of application, but dries colourless and has a high bonding strength. Is 3:1 plasterers/rendering sand to cement correct for the scratch coat and what about subsequent coats? What's the maximum thickness of scratch coat and top coats?If you go for this option you'll need to render the stonework first to give you a suitable surface. A-. 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. Is there anything I can do now. Prop the hose up splashing against the wall and go and have a cup of tea. 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. unfortunately came home yesterday and all covered in scratch coat with no waterproofer. Adheres to damp masonry and is weather-resistant. 1 remove lose stuff. #2. 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. i have a freshly scoured brick wall, having recently removed half an inch of old powdery paint layers. 3) waterproof paint the bottom exposed brick. May produce an allergic reaction. Ready to Use. Click and collect in as little as 1 minute. With regards the tile adhesive Devils advocate is sound advice. Most traditional renders are applied in two coats; a base coat and a topcoat. Charlie Far!ey New Member. Big Jumbo, Jul 27, 2009. This full-bodied, solvent-based paint dries quickly to form an odourless and taint-free black film – it’s suitable for metal protection as well as overcoating wood and felt. #2. But I'll have a go. It looks like I'd need 3 different types to do the job properly with that stuff but it looks like good stuff. Have look at Weber Weberend Aid made for smooth surfaces, will provide a key.