Render question. The paint has been fine until this very wet spring, when it started to bubble and peel in large random areas. Use a waterproofer additive. • Gives coverage of approximately 2 – 4 m² per litre per coat. FREE next day delivery available, free collection in 1 minute. I've attached some images. Roughly 1 of cement, 1 of lime, 4 of sand (usually sharp), below dampcourse, no need for waterproofer (some put it in anyway-also helps spreadability). Click & Collect. This is your 'drip-tray' separating the above and below dpc areas. )As long as you have good key you could get away with one coat say 10 mm thick. Hi there, I need to find a suitable, waterproof render for a wetroom. Hi i've built some raised flower beds / planters out of dense concrete blocks. 99Inc Vat. Will fill without depth limit and repair without formwork. If you don`t want waterproofer at least use a plasticiser or lime. Need some professional advice on waterproofing my 3ft garden flowerbed retaining wall. Sikagard Facade makes walls and. How many coats do you reckon fort he top coat?Water resistant bonding agent for external rendering and screeds; Admixture for concrete repair and tile fixing mortars; For improving resistance to abrasion, chemicals and oils; Reduced shrinkage and cracking; Improved workability, waterproofing and mechanical properties; Approx consumption : 5 - 7 Litres per 25Kg cementOrder online at Screwfix. Delivery. Effective sealer for waterproofing damp walls. Suitable for interior and exterior use. Don't listen to jim he doesn't know that hes talking about you always 2 coat all render, bricks also. Mould & Mildew-Resistant. My sister had her coal cellar done last year, and the guy used Sika 1, then rendered and plastered over it. I would have used a 'Monocouche Render' like Weberpral M, or K Rend both are coloured all the way through, available in many colours, saves painting. Hundreds of stores Nationwide. Some wall primers create barriers to stop. 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. K Rend). 99 Inc Vat. FREE Click & Collect within 30 minutes. The paint has been fine until this very wet spring, when it started to bubble and peel in large random areas. Permaproof Waterproofer - Render Additive 5L. Free returns. Long-lasting immediate fix. 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. 40. Rapid-setting waterproof cement. • Air entraining plasticiser • Prevents shrinking and cracking during curing • Water reducing • Chloride freeMortar plasticiser for stronger, easier to use brick and block-laying mortar. Render, Bricklaying and Floor Screeds. Latest Offers At Screwfix. Over 40,000 products. The product can also be used to protect retaining wall structures. Order No Nonsense Waterproof PVA 5Ltr at Screwfix. Screwfix Community Forum. 8/5. What depth should the battons for the scratch coat be? I was looking at 10-15 mm deep off the wall. Silicone render and waterproofing for penetrating damp. Discussion in 'Builders' Talk' started by pete12, Jan 26, 2006. If the wall is dry (unlikely this year!) lightly damp it without soaking it completely before applying the. FREE next. Fine. Click & Collect in as little as 1 minute. Sika Bond SBR+ Waterproof Bonding Agent and Mortar Admixture - 25L (6) £99. Applying the board directly onto the membrane with thin adhesive and mushroom fixings. TDav Member. ALlow to dry for 4 or 5 days and then finish with a render of 6:1:1 rendering sand:cement:lime. Most if not all are painted with. Use on brick, concrete and stone. your. 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. The original poster asked if there was any reason he should not add lime to a mix with a waterproofing plasticiser additive and not as you are labouring under the impression of, a waterproofer anda plasticiser, nor any. Order online at Screwfix. Domestic & commercial use. giving a lighter easier to work gauge of mortar. Another difference is that a proper plasticiser has a limited amount of air entraining ability so that leaving the mix turning too long has no detrimental effect on the mortar. Hi, My extension was built and rendered using a sand/cement render around 4 years ago. Apply with Brush or Roller. From waterproof adhesive to glass adhesive, it is important to choose the right glue for the job. com. Repels water on wood, brick, concrete, paving, asbestos and cement. 1 waterproof additive put into the mix, only other option to guarantee know more damp is th hack off internal plaster work, apply vandex over all exposed brickwork, sand cememnr then plaster, damp will be gone for ever. 5/ plaster to suit. com. Quick-Dry Stabilising Solution. 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. 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. The waterproofs range offers you a selection of colours and sizes to suit your needs while keeping you dry throughout your working day. 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. VAT) Quick. com. #10. Mr. Sika Waterproof Coating Grey 5kg. After that, 2 topcoats of a good quality masonary paint, and job done. Go all over it and knock off the loose stuff. I recently bought a bungalow, it was built 1970. I'm putting a corner shower into the bottom floor (concrete pad) of my house. Apply a bitumen or Pitch Epoxy coating from the outer edge of your 'slope' all over the existing dpc and up the wall 150mm. I am also used 3:1 evermix plasticizer / waterproofer / retardant in the mix towards a strong ratio. Hazardous Product – Not available for Mail Order/ TCND outside of Mainland UK. 99 Inc Vat. 1. Been a plasterer /damproofer for 28 years and yes you can use SBR and Paint over it but will need to give a sand or LIGHT. He rendered approx two square mtres at a time before applying dash. unless you do a lot of good drainage behind it and seal it with something more waterproof than render. Can be brushed or spray applied. Stops freeze thaw damage. Heat-Resistant. Sets in 20 minutes. (£5. 2 coats of 1:4 cement:sand render with waterproofing admix, first (scratch) coat 12 - 15mm with scratches to gove a key to the finish coat 5 - 8mm, 24 hours in between coats. Coverage per Litre: 6m²/Ltr. 3N dense concrete blocks. Sika Waterproof Coating Grey 5kg (83502) (67) compare. UK call centre ready for your call 24/7. Good luck. com. Best chech out the additive that has been used with the manufacturer. High performance waterproof treatment for exterior. Primer Not Required. The proceedure is:-. G4 Pond Sealer Clear. We also don’t think it’s had waterproofing mixed in. Designed to function against water penetration in various conditions, it can be used in foundation slabs, tunnels,. By doing it this way you have. 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. 99 Inc Vat. Water & Weather-Resistant. Cement-based, rapid-setting flexible adhesive. It's all more controllable, and the 'plaster' ain't setting before your very eyes sending you into a blind panic. There's render up to about one metre all the way around the room, then its a 'board & dab' job up to the ceiling. We would like to show you a description here but the site won’t allow us. and the level of the intended patio is a brick above the existing damp course in that specific wall. 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. 49 Inc Vat. Have look at Weber Weberend Aid made for smooth surfaces, will provide a key. waterproofing paint. 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. So you need to fit a waterporoof membrane undernearth your inner skin over the studding. I’m doing the patio and the. Choose from rapid or fast set cement for small commercial or domestic jobs. Pieces in Pack/Case. KIAB Super Member. Extremely durable and will adhere to any substrate for filling and repairs with no depth limit. 1 remove lose stuff. The first coat is known as the scratch coat, and is applied in a thin layer and left to cure. PermaSEAL 3 Damp Proof Membrane Kit 10m². Delivery Next day available. Before adding any render, ensure the wall is damp to the touch, but not running with water. Search titles only By: Search Advanced search…Eco Prim Grip Plus 5kg. I have a small area (2. Customer lives close to coast will the salt in the air have any impact on my. 5 Ltr. 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. £179. Sika Proof improves the impermeability and absorption. £9. Thompson's Water Seal uses a unique micro silicone emulsion to stop water penetration. only one left wet. Need to render an external wall or building? The Everbuild 507 Rendagrip bonding agent will help ensure your render sticks firmly to the desired surface. 99 Inc Vat. thanks, I keep reading that you shouldn't use cement render when a wall is built with lime or cob but because it will not breath but it has already been hard rendered on the outside so therefore it is already. the. Discussion in ' Builders' Talk ' started by Fussy Spark, Dec 27, 2020 . slapiton New Member. 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. Volume. DIY_Has123, Feb 3, 2021. Suitable Application. Scud the wall first with 1:1 sand/cement next day dampen down before rendering with the hose, thermalite are a pig to render unless you are quick. Screwfix - Rapid-setting waterproof cement. Forms a transparent, waterproof barrier. For a clear coating over bricks to allow. 93. The shed is 5m x 2m high & has 2 end walls about a metre wide. very big difference. 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. 5 Ltr. waterproof render will work however yoy need to overcome the possibility of presure pushing the render off. Provides superb weather protection for bricks, mortar and concrete. I’m doing the patio and the intention is to fill the void. Covers up to 4m². The render would or should have had a waterproofer added to the mix when rendered so it will be waterproof, as the render is new it is not necessary to apply a stabilising solution. Bostik 1kg Cementone Colours for Cement - Buff (47) £9. Discussion in 'Painters' Talk' started by Joelfc89uk, May 24, 2018. Universal Protector Water-Repellent Spray. Furthermore, the stabilising solution and PVA will both act to keep any moisture within the concrete, hence why you experiencing problems. And all this after the walls were skimmed and painted. Internal Skimming of conservatory walls. Delivery. Completed an extension last summer and the exterior walls were cement rendered the usual way with waterproofer etc. As well as waterproofing, this product also helps to prevent condensation and efflorescence, keeping structures in great condition for longer. Good luck. drill driver New Member. PAGE 1 OF 2. Truth be told I've already bought six 10L tubs of Sandtex and the stabilising solution, about over a year ago. , Feb 26, 2008. final coat of render needs to. That's not to say lets seal the moisture in the bricks. com. It is supplied in the form of a deeply penetrating cream that is applied to the wall surface using a roller or brush. 99Inc Vat. Screwfix Community Forum. £ 52. Product Type. 99Inc Vat. Ask a question. Ideal for use on swimming pools, water tanks, ponds, below ground concrete, as well as for render and floor screeds for water resistant applications. 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. 30 day money back guarantee. 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 > Damp wall render. 80. FREE next day delivery available, free collection in 1 minute. Quick-Dry Stabilising Solution. 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. DIY_Has123 Active Member. Wet room Kits consists of a mix of products which are needed when creating an open plan showering area. 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. My plan is: 1) Cut back the render from the ground. Cmd38 New Member. Order online at Screwfix. Discussion in ' Builders' Talk ' started by roger waters, Sep 11, 2006 . It Is single skinned and with render onto boards which were lined with fibreglass mesh. The correct method is as follows:- 1st coat (scratch coat) 3:1 sharp sand with waterproofer and scratched. Left it a day, then filled with water. £7. 99. Easy to shape and can be used on a variety of rough masonry surfaces including cement, concrete, breeze blocks, bricks and stones. Delivery. Using 4 :1 first coat and 6:1 second with waterproofer. The fine aggregates are suspended in a unique waterproof polymer to ensure easy application by roller or brush. Low toxicity. Exterior decorators acrylic for sealing around exterior window and door frames in most building substrates. Product Type. Fast-Drying. Is vital that the waterproofer is added in the correct amounts according the the manufactures instructions. com. Adhesive can be manufactured from a range of substances, with each having different properties. Discussion in 'Builders' Talk' started by questioner, Jul 6. oggie78 New Member. Delivery Next day available. FREE next day delivery available, free collection in 1 minute. Mr. com. For easy application Tarmac One Coat Renders contain polymers. Deme23 New Member. But I'll have a go. 1/5. There is a white crystal deposit under left on the exposed render. This will depend on the surface of which it's being applied and the strength of hold required. Order online at Screwfix. I would check adhesion using a piece of rubber, the type used for door stops (screwfix p118), glue it with superglue (allow to cure) rip it off and see what gives. Waterproofs Plaster, Plasterboard, Plywood, Render & Concrete. Phil the Paver, Nov 22, 2014. Bostik Concrete Sealer 5L. £9. If in the top coat the waterproofer or water resistance(r) may/fail and then damp has every chance of getting through. I usually rule it off,fill the hollows and then leave it until it starts to get firm (dependent on the background I know). Apply with Brush or Roller. EVeryone seems to have their own opinion and hardly. 2. I intend on having the front of the wall rendered so it is important that it is sealed correctly. Goddo New Member. In 20 years of building and renovating, it has never been mentioned in our business. They have for example render products which are waterproof, yet breathable. You could remove all the damp affected render and plaster back to stone and then render with a 4:1 mix of sand and NH lime. Product Type. The internal walls are damp from floor to ceiling and I am told by a specialist damp firm that the damp is due to the cracking. Quantity: FREE Click & Collect within 30 minutes. Not available for delivery. 100% Polyethylene Construction. 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. Volume. Screwfix Community Forum. My sister had her coal cellar done last year, and the guy used Sika 1, then rendered and plastered over it. Use on Plasterwork, Skirting Boards, Windows & Door Frames. A-. View all: Sika Waterproof Sealants. Order Bostik SBR Admixture White 5Ltr at Screwfix. The Sandtex Brickwork Waterproofer & Protector provides a clear waterproof protective layer for bare brickwork. horses for courses, take your pick!! good luck. Morning all, I'm looking to render 3 garden walls, all made from 7. I know I need to attach mesh to the surface, but a friend has told. Mix it at 5-1 sand - cement with waterproofer. . (42 products) Gloss paints are used to provide a high shine finish to interior or exterior surfaces. Use a bitumous tanking primer on the clean stone internally and throw gritty sand at the wet black jack for a key when dry. As per usual there are so many different videos etc on the web it can get confusing. When dry paint to match. Hundreds of stores nationwide. Most if not all are painted with mansonry paint, (Specialist applications excepted, eg. koolpc and SeaJay like this. After starting he informed me that. Free next day delivery available. I guess the best way to render the bell bead is in two parts. you. It sets to a rock-hard finish and can be overcoated in 24 hours. Supplied in a graduated bucket. Easy returns, with 30 day money back guarantee. Nail straight pieces of timber vertically & horizontally as required to external corners, window & door reveals. You should have. Hello. Neville the tap dancing gibbon, Sep 2, 2006. 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. . At present it’s a thin coat of sand and cement mix with metal beading that’s rusty, on top of Accrington brick. Delivery Out of stock for delivery. This can take from between 24 hours up to two days, depending on humidity, temperature, and airflow around the building. I know this is not the best route to go in waterproofing a wall normally. Prepare walls by straightening them out with a two coat render system and a waterproofer agent added to 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). £9. Screwfix customers rate this product 4. What depth should the battons for the scratch coat be? I was looking at 10-15 mm deep off the wall. Cemenmt render will dmage the wall eventually - its not ok to do it. Waterproof. Order Bostik Waterproof Cement Grey 10kg at Screwfix. All walls were PVAed before rendering. Strong fibreglass mesh tape that helps reinforce plaster coating and protects it from cracking. PAGE 1 OF 2. Click & Collect. It produces a superior. For Interior & Exterior Use. Covers approx. Phil the Paver Screwfix Select. You can use any Render bonding or gripping to prep & fix all render patches - use Polyurethane sealant for filling the recently opened cracks. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. Generally, 5 litres of SBR per 25kg bag of cement in an external render for an area of normal exposure. ★★★★★ ★★★★★. do i need to apply a thick scratch coat beforehand?? I was thinking of just applying a thin waterproofing mortar just to smooth pores in the block, joints etx, and apply this acryllic on top of. £ 24. 5m x 0. Overcoat with any. Low Odour. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. FREE next day delivery available,. ★★★★★ ★★★★★. Stormdry Masonry Protection Cream is a colorless waterproofing cream for application to brick, stone, mortar, render and masonry. Buy Cable Sleeving at Screwfix. Available in a variety of options. The exterior is rendered and i'm pretty sure its trapping water in the walls and just driving it in. I'm no pro on this, but have done a lot of research into it. Apple Pay accepted in store. Fillers and Putty are used to fill or seal holes, cracks, or gaps prior to further decorating. Forms a transparent, waterproof barrier. Water & Weather-Resistant. Weber One Coat Base Render 25kg £18. Volume. waterproofing paint. gauge everything put the water in the mixer then add the lime to the 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. KA Tanking Slurry is the complete crystalline solution to waterproofing masonry and blockwork. Suitable for new or renovated substrates, either unpainted or painted: gypsum plaster, old painted surfaces, cement, concrete, breeze blocks, bricks, stones, glass and. Reduces water permeability. Also with spring weather being variable in temperature, would you recommend covering. 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. The aesthetics don't concern me too much as when the border is planted again, not much of the wall is going to be seen, so I'm not particularly worried about colour matching the. £ 14. Customer lives close to coast will the salt in the air have any impact on my. Leaving me a few mm to be skimmed. I know when we do the top coat it's gonna suck the moisture out like crazy. 99 Inc Vat. too much suction 4:1 will do you. VAT £6. £49. Mr. Adheres to damp masonry and is weather-resistant. com. This is to avoid spraying the chemicals which can then drift in. A friend has given me some acrylic render (premixed tubs 25kg) which is a topcoat, and more than enough to do the job. 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. Rub up the render with a plastic or wood float ( an off-cut of 2" x 4" will work as a float trowel) and tile straight on to it. The biggest problem with a single-skin external wall is condensation which most people confuse with rising damp. co. Read more. 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. Ideal for emergency repairs, filling and patching. Use it after clearing. 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. Sometimes i use wire ( render lathe to all you young spreads ). Water Seal. 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. Delivery. KIAB, Sep 18, 2015. Render thickness seems to be between 5 and 10 mm. 19 each (Inc. com. Over 40,000 products. 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. Product Details. Bostik Waterproof Cement Grey 10kg (58196) Bostik Waterproof Cement Grey 10kg. handyman 2 New Member. Click & Collect. Two thin render coats. At minimum, the rear of HardieBacker® 250. Add for Delivery. The wall is an external leaf, subject to high prevailing salty winds and has had dampness for years. Cold & Heat-Resistant. FREE next day delivery available, free collection in 1 minute. I have used a slurry coat first of. Air entraining – will not “flatten” the mix. com. Out of stock.