Is either expanding foam, or white silicone OK in this situation (inside of course, render with waterproof mix on the. and the level of the intended patio is a brick above the existing damp course in that specific wall. FInish with horizontal scratches for a key. The render goes right down to the ground outside. 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. render on lead. the rendering is the easy bit. Done a good job apart from i didn't put waterproofer in. I am after some advice if poss. View all: Bostik Cement Mix. Home Forums > Screwfix Community Forum > Builders' Talk > Rendering. Product Type. Step 6 – Apply First Coat of Render to Wall. Render Waterproofer. 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. I intend to apply sandtex stabilising solution and then sandtex fine texture paint which say's it has a breathable waterproofer in it. normal bricks and most blocks, calls for a 1:1:6 mix for the scratch coat; cement, lime and sharp sand (3mm to fines). They have for example render products which are waterproof, yet breathable. You use a wire scratcher to form a key in this while its wet to form a good key for your second coat. Will fill without depth limit and repair without formwork. Once dry then add a cup full per mix of neat sealer in the water. Delivery 7 days a week. Most can be used on all common surfaces, and as a decorative trim or door paint. 88 Inc VAT-+ Add to Basket. Mix it at 5-1 sand - cement with waterproofer. Thread. all the best. This is the only part on the whole house which shows this and I belive I. A-. you. This sealant is suitable for for repelling water on porous surfaces. (76 products) Aggregates and Chemicals are the components of a composite material which will resist stress providing a bulk to the composite material. Phil the Paver Screwfix Select. Leaving me a few mm to be skimmed. Waterproof render (sika 1) on the walls and d&d insulated plasterboard. Weberend One-Coat Base Render (OCR) is a versatile pre-blended single coat application render, ideal for rendering brickwork, blockwork and concrete. Waterproofer in Render? Discussion in 'Builders' Talk' started by TDav, Sep 9, 2018. 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. Some wall primers create barriers to stop. You should have. . Free next day delivery available. 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. Goddo New Member. She got the guy back and he said 'oh well, it hasn't worked, you need the place tanking which. Choose from top trade brands. com. For Indoor Use. Screwfix Community Forum. I have hacked off crumbling old plaster to expose old brickwork and breeze block walls and I have primed the surface with 1:5 mix of Waterproof Unibond. Order Bostik SBR Admixture White 5Ltr at Screwfix. com. View all:. 99Inc Vat. I plan to re-flaunch my chimney in April when weather improves. 3. 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. Screwfix Community Forum. #2. Given the time since it being applied does this need to have stabilising and/or waterproofing coat before painting?Yes to a mist coat - I generally thin by about 30 - 40%. #2. Presume you have slope away, try to start with nothing at dampcourse (should remain below dampcourse). Removable Grid Supplied. Jesus some ridiculous answers. Good luck. Water Seal. Product Type. Currently in Stock. Buy online & collect in store in as little as 1 minute. Render - smooth finish. Thompson's Water Seal uses a unique micro silicone emulsion to stop water penetration. Suitable for 127mm Wide Coving. Sika Rendagrip External Render Bonding Agent Red 10Ltr (8831P) (10) compare Waterproof One Coat Application Red Colour Indicates Coverage £54. Protecting from rain, frost, ice and snow, this product is ideal for providing extra protection to your home's exterior. If the wall is wet, not sure trapping the damp in the wall in under new. 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. 99 Inc Vat. Discussion in 'Builders' Talk' started by questioner, Jul 6. PVA is a water-insoluble resin which is typically white at the point of application, but dries colourless and has a high bonding strength. (we could render the side but not the back). Screwfix Community Forum. Low Odour & Solvented. Suitable as a damp proof membrane on solid concrete floors. Ideal for use on swimming pools, water tanks, ponds, below ground concrete, as well as for render and floor screeds for water resistant applications. DIYDave22 New Member. waterproof finish of say, a gloss paint, and finding that underneath is very soluble. 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. 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. I have used a slurry coat first of. fillyboy Screwfix Select. Whether you’re looking to stop a leak, repair an existing roof, or fit a new roof, Bostik has a solution to support the step-by-step process of your next waterproofing project. I use to put waterproofer in both coats, but some peeps on do scratch coat. External wall is rendered. FREE next day delivery available, free collection in 1 minute. FREE next. £8. I have been quoted between £600-£800 to re render the shed (just got the one quote so far so I have no idea if I can get this done cheaper)Installation on brick walls. 5/5. Delivery 7 days a week 60 days free credit available. 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. Ideal for emergency repairs, filling and patching. You could have asked the plasterer to add a waterproofer to the render mix, but it's obviously too late now. I know I need to attach mesh to the surface, but a friend has told. Suitable for the damp proofing of interior masonry wall surfaces. Available in a variety of options. horses for courses, take your pick!! good luck. Float at 5:1:1 Builders sand : OPC : LIME with waterproofer in the water How does that sound? 2. 7 litres of SBR per 25kg bag of cement to give a totally waterproof render. Depending on the ratio you used for waterproofer/water in your mix you should find that the render is virtually weatherproof. View all: No Nonsense Water Seal. 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. Garage, garden, whatever. For the coloured top finish you require you use coloured sand and not coloured cement. 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. 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 (insisted upon by the local councils conservation officer. £ 52. i have a freshly scoured brick wall, having recently removed half an inch of old powdery paint layers. Frame sealant is flexible and designed to withstand UV, weather and water exposure. Sika Waterproof Coating Grey 5kg (83502) (68) compare. Order Bostik Waterproof Cement Grey 10kg at Screwfix. From what I’ve read on this very helpful forum, it’s a water/salt problem. Rendering of chimney. 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. Screwfix Community Forum. Grey colour when dry. Hi handy 007 1/2. com. When applied, Febtank Super forms crystals preventing water ingress and provides an extremely durable waterproof coating. The old one is of crumbling brick and an (equally crumbling) smooth cement render. Generally, 5 litres of SBR per 25kg bag of cement in an external render for an area of normal exposure. Depending on the ratio you used for waterproofer/water in your mix you should find that the render is virtually weatherproof. • Air entraining plasticiser • Prevents shrinking and cracking during curing • Water reducing • Chloride freeMortar plasticiser for stronger, easier to use brick and block-laying mortar. The pointing needs raking out 25mm deep, and re-pointing with a 4:1 sand & lime mix. the waterproofer will not work!!!!!the top coat must be at least 6 parts WASHED sharp sand 1 part lime 1 part cement{opc}. In fact, cracks are still appearing now, nearly a year on. Nail straight pieces of timber vertically & horizontally as required to external corners, window & door reveals. £ 14. Not available for delivery. Is vital that the waterproofer is added in the correct amounts according the the manufactures instructions. Getting the mix spot on is the key!Stormdry is a colourless [1], breathable, water-repellent treatment for brick, concrete and stone [2] walls. Product Type. 99 Inc Vat. roof king, Sep 17, 2010. The real question is is galvinised mesh ok. The correct method is as follows:- 1st coat (scratch coat) 3:1 sharp sand with waterproofer and scratched. Dried clear. 4 use mechanical fixings to fix this system to the wall. 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. There are various types for different applications, including quick single coat options. KIAB Super Member. 90 Ex VAT. hi what is the best mix ratio for rendering internal wall . Order No Nonsense Anti-Crack Acrylic White 310ml at Screwfix. 99 Inc Vat. 1 remove lose stuff. The render on your house has cracked due to a number of reasons, it could of been done in poor weather, or not enough mechanical key. By getting the finish coat on within 8. Screwfix Community Forum. A typical mix to produce a water resistant mortar or render would be sand:cement 4:1 using SBR Bonding Agent diluted 1:3 with water as the gauging water Application – Bonding Agent For bonding render or plaster use SBR Diluted with water 1:3 or 4. Permaproof Waterproofer - Render Additive 5L. Waterproof a leaking roof. Furthermore, the stabilising solution and PVA will both act to keep any moisture within the concrete, hence why you experiencing problems. Fast-Drying. Scratch coat @ 4 to 1 & Top coat @ 5 to 1, I like to add fibre (adfil) to mix, gives a bit of reinforcing, prevents cracking,etc. View all: Thompsons Water Seal. Show More. Prepare walls by straightening them out with a two coat render system and a waterproofer agent added to mix. Coverage: Approximately, 1 litre of SBR per sq metre at. 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. Render mix. 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). Order online at Screwfix. This not painted at the time as suspected water ingress problem however this issue now resolved. com. 99 Inc Vat Click & Collect Not available for delivery Buy Bonding Agents at Screwfix. Don't listen to jim he doesn't know that hes talking about you always 2 coat all render, bricks also. Sika Bond SBR+ Waterproof Bonding Agent and Mortar Sika Bond SBR+ is a one component, water based, general purpose, styrene butadiene rubber emulsion bonding agent and mortar admixture. With 10mm for the scratch coat and 8mm for the top coat. £49. View all: Sika Waterproof Sealants. Use on Plasterwork, Skirting Boards, Windows & Door Frames. 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. If you wait then water will get in behind it and more and more will fall off. Covers approx. We would like to show you a description here but the site won’t allow us. 25 Year Waterproofing from a Single Coat . 5 apply new finish. £21. Everbuild Solvented Grab Adhesive 350ml (6048H) (245) compare. 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. Then sharp sand fine, lime, cement in 6: 1: 1 ratio as top coat. Phil the Paver Screwfix Select. Order No Nonsense Waterproof PVA 5Ltr at Screwfix. Discussion in 'Builders' Talk' started by Bungditin. 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. 5 Ltr. The wall is hollow concrete block, backfilled with concrete and reinforced to some rather substantial footings. that's why i am kind of believe the exterior wall is vulnerable to weather conditions. 99 Inc Vat. Good shout? Also, not location of air bricks. It is a process that helps make an object or structure waterproof or water-resistant, meaning it remains relatively unaffected by water. Suitable for new or renovated substrates, either unpainted or painted: gypsum plaster, old painted surfaces, cement, concrete, breeze blocks, bricks, stones, glass and. KIAB, Sep 18, 2015. your. FREE next day delivery available, free collection in 1 minute. Apply with Brush or Roller. One idea was maybe to do a slurry of waterproofer and render and paint in on with a brush and once that becomes tacky, to add the 1st coat / scratch coat? Not sure what product to use though for waterproofing purpose, pls advise! Cheers. 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. 2nd coat (floating coat) 4:1 sharp sand with waterproofer as above etc. Went on white. I usually rule it off,fill the hollows and then leave it until it starts to get firm (dependent on the background I know). Aggregates & Chemicals. Wait a few minutes, feel the pva. . ALlow to dry for 4 or 5 days and then finish with a render of 6:1:1 rendering sand:cement:lime. Click & Collect. Designed to function against water penetration in various conditions, it can be used in foundation slabs, tunnels,. Free returns. Click & Collect. Silicone render and waterproofing for penetrating damp. It’s great for waterproofing outside areas that are liable to be damp, humid or continuously exposed to water or steam. Total Product Weight. 80. for a half bag mix in a small mixer add one cup full of waterproof and one cupful of placticiser to a bucket of water. You shouldn't use PVA for external render however they do make an external grade one but this isn't necessary. Buy Roof Repair Products at Screwfix. (£5. Totally forgot as was so busy myself and only had a spare few days to do it. This is an interior wall but yes its a wall with a window and other side is exterior. Sika Proof Liquid Waterproofer 5L £7. oh! and ladies. 2/ render the walls. weakening its bond with the brickwork/render. 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. Forms a transparent, waterproof barrier. 310 ml. £3. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. Suitable for a Variety of Applications. 49 Inc Vat. Latest Offers At Screwfix. Home Forums > Screwfix Community Forum > Painters' Talk > Painting render. 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. • High water and rain resistance • Water reducing • Provides long term water protection• Chloride free New Sika sku available (code 98821)Long term water protection to mortar, concrete and rendering. £9. Sika Proof improves the impermeability and absorption. Light Grey. Then simply follow the manufacturer's painting guidelines perfectly. VAT £6. This time, its butting up against 12mm plasterboard (painted) which was dabbed directly to the brick (no render). With top trade brands available, offering great quality products, you'll be able to continue working even on the. As well as waterproofing, this product also helps to prevent condensation and efflorescence, keeping structures in great condition for longer. Need some professional advice on waterproofing my 3ft garden flowerbed retaining wall. com. £11. Contains enough to waterproof a standard sized shower. Slow setting time makes it ideal for covering large areas in one application. I intend on having the front of the wall rendered so it is important that it is sealed correctly. Delivery. Find directions and contact info, read reviews and browse photos on their 411 business listing. It sets to a rock-hard finish and can be overcoated in 24 hours. Do I have to waterproof the blocks first or use a waterproofer in the render?As expected all the windows seem to be missing the silcone and allowing water to get in. 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. £2. Completed an extension last summer and the exterior walls were cement rendered the usual way with waterproofer etc. You can use this all-in-one primer and sealer to form a waterproof layer on outdoor surfaces such as concrete, lightweight. £32. 1. Lead-Free. Still I`d be interested to hear other peoples approach. Ideal for emergency repairs, filling and patching. Primer Not Required. 'A' way to do it is this. 5 kg. • Gives coverage of approximately 2 – 4 m² per litre per coat. From what I’ve read on this very helpful forum, it’s a water/salt problem. Neville the tap dancing gibbon, Sep 2, 2006. KA Tanking Slurry is the complete crystalline solution to waterproofing masonry and blockwork. Hi, My extension was built and rendered using a sand/cement render around 4 years ago. On dense, less absorbent brickwork or render, coverage of the brick waterproofer can be increased by up to 10m² per litre. £18. Â, Dec 1, 2007. com. 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. Ask a question. Easy to shape and can be used on a variety of rough masonry surfaces including cement, concrete, breeze blocks, bricks and stones. 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. there is a waterproof pva available which some say would work ok, but the consensus here is that either sbr or a sand/cement. Order online at Screwfix. 99Inc Vat. We encourage you to debate the topics and issues of the day in a friendly manner, whether related to trade/DIY or not. 30 day money back guarantee. Product code. Apply a bitumen or Pitch Epoxy coating from the outer edge of your 'slope' all over the existing dpc and up the wall 150mm. FREE next day delivery available,. ssss64 New Member. Hmmm, that could look impressive. I wouldn't re-render - leave the bricks open to the air. 5/5. Then sharp sand fine, lime, cement in 6: 1: 1 ratio as top coat. £39. 4m²/Ltr. It failed in one area, and cracked off the wall. Neosparks, May 30, 2006. rogerk101 Screwfix Select. Stormdry Masonry Protection Cream is a colorless waterproofing cream for application to brick, stone, mortar, render and masonry. Damp walls can cause salt deposits to appear – these can blow your plaster. Hi, I wonder if anyone can help/ offer some advice as we’re at our wits end. £17. Screwfix customers rate this product 4. When this is complete, lay the concrete floor with the membrane overlapping the tanking by a generous margine. Click and collect in as little as 1 minute. com. Thistle One Coat Plaster 7. Click & Collect. Preparation of the surface to be painted with gloss. Order online today. Is unibond OK 2. The the final coat - 5 sand 1 cement NO WATERPROOFER just feb. I have followed the general advice given, 4 : 1 sharp sand / cement with the recommended amount of combined water-proofer / placterciser for good measure for the scratch coat. com. A friend has given me some acrylic render (premixed tubs 25kg) which is a topcoat, and more than enough to do the job. Screwfix Community Forum. And all this after the walls were skimmed and painted. 'A' way to do it is this. shazauk New Member. Cemenmt render will dmage the wall eventually - its not ok to do it. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. Pieces in Pack/Case. 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. Touch-Dry in 6 Hours, Fully Dry 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. Discussion in 'Builders' Talk' started by Cmd38, Sep 21, 2020. VAT £15. Wet room Kits consists of a mix of products which are needed when creating an open plan showering area. Ricky Johnson New Member. PAGE 1 OF 2. Ideal for locations such as basements. 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. com. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. This ready to use Sikagard facade from Sika is a water based impregnation emulsion. The wall has a land drain behind to reduce hydrostatic pressure. Add for Delivery. General purpose, solvent-based. I am also used 3:1 evermix plasticizer / waterproofer / retardant in the mix towards a strong ratio. When diluted with water it produces a gauging solution for improved adhesion, workability and waterproofing of mortars and cementitious mixes. Product Details. Primer Not Required. Overcoat 48-72 hours after application with any standard water-based masonry paint or mineral. FREE next day delivery available, free collection in 1 minute. No waterproofer in render scratch coat. Not available for delivery. 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. Only way to test if it's still wet is with a moisture meter. K Rend). Touch-Dry in 6 Hours, Fully Dry in 24 Hours. Masonry cream is snake oil, it does nothing. Page 1 of 2 1 2 Next > Thread Replastering around doorframe with very uneven brick walls. Delivery Out of stock for delivery. Big Jumbo, Jul 27, 2009. Glazing and frame sealants come in a variety of acrylic and silicone based sealants, used to keep your home free from water ingress. The product can also be used to protect retaining wall structures. com. 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. Products reviewed by the trade and home improvers. Low Odour. Phil the Paver Screwfix Select. Sika Bond SBR+ Waterproof Bonding Agent and Mortar Admixture - 25L (6) £99. 99 Inc Vat. Masonry paints are specifically for exterior use and will protect a property from weathering and pollution. Discussion in 'Builders' Talk' started by pete12, Jan 26, 2006. Don't try and apply render in one coat it will only sag and probably fall off wall. 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. Over 40,000 products. (the actual water drainage path, which looks like its made of half a sewer pipe is actually in good condition, so its only the. Delivery Next day available. Low Odour & Solvented. remove all dust. com. If it was my place I definately would not paint it. 1 remove lose stuff. Discussion in 'Builders' Talk' started by Victor Lek, May 24, 2022. Learn more about Graphic Design Architectural Rendering | Victoria, BC. Product Type. 1-2hrs Approximate Setting Time. The Bonding coat should not be allowed to dry before application of the render or plaster. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. Adhesives are used for bonding a variety of materials. 1. But I'll have a go. 2. Stormdry Masonry Protection Cream is a colorless waterproofing cream for application to brick, stone, mortar, render and masonry. I will be using metal studs to make the framework and lining it in OSB3. Finishes are subject to high or low maintenance all of which are discussed at time of consultation. . Buy.