Order online today. It's all more controllable, and the 'plaster' ain't setting before your very eyes sending you into a blind panic. Mix approximately 4 to 5 litres of water per 25kg bag using an electrically driven mixer until you achieve a workable consistency. I have used a slurry coat first of. giving a lighter easier to work gauge of mortar. Home Forums > Screwfix Community Forum > Builders' Talk >I will need to clean the base coat which is solidly attatched to the block wall and scratch it, probs with a grinder and apply a new top float coat using a mix of sand / cement / waterproofer and maybe lime as per this sites recomendations. The wall is an external leaf, subject to high prevailing salty winds and has had dampness for years. Just. 5 apply new finish. A. 5 apply new finish. If you don`t want waterproofer at least use a plasticiser or lime. A-. Reduce cracking and shrinking when mortaring with this SBR bonding agent from Everbuild. 99Inc Vat. Latest Offers At Screwfix. Render, Bricklaying and Floor Screeds. i have a freshly scoured brick wall, having recently removed half an inch of old powdery paint layers. Use it as a bonding agent, primer, sealer and. Screwfix customers rate this product 5/5. Our team of experts are on hand to help you at every step of the process. Product code. 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. Silicone render and waterproofing for penetrating damp. Garage, garden, whatever. My plan is: 1) Cut back the render from the ground. This would be better off in plastering forum. blertsville, Jul 4, 2011. too much suction 4:1 will do you. Neville the tap dancing gibbon, Sep 2, 2006. Some wall primers create barriers to stop. Is either expanding foam, or white silicone OK in this situation (inside of course, render with waterproof mix on the. Construction Project Manager, May 29, 2015. Order online at Screwfix. 99 Inc Vat. waterproofing paint. com. Will this be enough. Choose from top trade brands. 1 Year Guarantee. 74/kg quantity Collection Set Store. £ 28. #2. com. Available in different variants, it is important that the right basecoat paint is chosen for the job. 54/L quantity Collection Set Store. This can take from between 24 hours up to two days, depending on humidity, temperature, and airflow around the building. Home Forums > Screwfix Community Forum > Builders' Talk > Damp wall render. Free next day delivery available. unless you do a lot of good drainage behind it and seal it with something more waterproof than render. But I'll have a go. Product information. 80. Most external decorative renders are painted, most have a combined waterproofer and plasticiser addidive in last coat. As per usual there are so many different videos etc on the web it can get confusing. 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. Delivery. Screwfix customers rate this product 4. Order Bostik SBR Admixture White 5Ltr at Screwfix. 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 Victor Lek, May 24, 2022. I want to chop off about 500mm from the wall to widen the path and then render the cut end to match the wall - so a small area to render, approx 900mm high by 2 brick widths. com. So it'll be damp from behind (penetrating damp) and damp from below (rising damp), so not much to be gained by. 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. A waterproof render is more a damp proofer than a waterproofer. Buy Plastering items from Screwfix. Protect your outdoor surfaces from the weather by coating them with black bitumen paint from Everbuild. What depth should the battons for the scratch coat be? I was looking at 10-15 mm deep off the wall. your. Insulates and protects wiring. 1 remove lose stuff. Evening guys. Discussion in 'Builders' Talk' started by ssss64, Jan 23, 2007. View all: No Nonsense Water Seal. FREE next day delivery available, free collection in 1 minute. Can anyone give me advice on rendering over Medium Density Blocks for an external garage. Phil the Paver, Nov 22, 2014. and the level of the intended patio is a brick above the existing damp course in that specific wall. Designed to function against water penetration in various conditions, it can be used in foundation slabs, tunnels,. 99 Inc Vat Click & Collect Not available for delivery Buy Bonding Agents at Screwfix. Customer lives close to coast will the salt in the air have any impact on my. 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. They have for example render products which are waterproof, yet breathable. 'A' way to do it is this. com. Advice on mix varies. K Rend). PVA wall first. Delivery Out of stock for delivery. blertsville, Jul 4, 2011. I know I need to attach mesh to the surface, but a friend has told. Pieces in Pack/Case. Styrene-free, vinylester-hybrid, high performance mortar for the most demanding requirements. Considering the size of the job I'll just use the stuff from Screwfix for this. There are various types for different applications, including quick single coat options. Don't use sharp, builders merchants do plastering sand just tell them thats what you need. Waterproofing Block Building. Applied waterproof PVA. 4m²/Ltr. I have asked a local builder to re-read our chimney as it was badly cracked and had started to let water into the loft. The rest of the building had bell beading so it was only about a 4 metre section I had to do. Products reviewed by the trade and home improvers. The waterproofs range offers you a selection of colours and sizes to suit your needs while keeping you dry throughout your working day. 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 first, just use a hand brush to go over the surface to remove any dusty muck off the surface. I’m leaning more towards K rend, as it’s silicone and. Handyandy - really Mr. Screwfix customers rate this product 4. Air entraining – will not “flatten” the mix. Is there anything I can do now. Render Waterproofer. 25 Year Waterproofing from a Single Coat . ST100 104Ltr Spill Tray 795mm x 1195mm x 185mm (769HJ) compare. I know I need to attach mesh to the surface, but a friend has told. com. (£5. 310 ml. Phil the Paver, Nov 22, 2014. General purpose, solvent-based. It has many uses, and is suitable for most porous. Fast-Drying. Aggregates & Chemicals. Most if not all are painted with mansonry paint, (Specialist applications excepted, eg. Option No. 5Kg. Mould & Mildew-Resistant. I know this is not the best route to go in waterproofing a wall normally. Phil the Paver Screwfix Select. Are there any issues with MDB's - i know thermalites are a pig but are these any easier?you will need to hack off the external render and re-render with sika No. Buy Cement Mix at Screwfix. Try on a couple of places (bottom of wall more likely to have weak adhesion). Mr. ★★★★★ ★★★★★. Click & Collect. (£1. Mr. Grey colour when dry. 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. Bostik 1kg Cementone Colours for Cement - Buff (47) £9. PermaSEAL 3 Damp Proof Membrane Kit 10m². 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. Order online at Screwfix. ALlow to dry for 4 or 5 days and then finish with a render of 6:1:1 rendering sand:cement:lime. Product Type. Handyandy Screwfix Select. waterproof render will work however yoy need to overcome the possibility of presure pushing the render off. Scratch coat is 1 part cement, 1 hydrated lime, 5 plastering sand, with fibreglass mesh embedded. Click & Collect. i now have to patch it up, about a 2 inch strip. I've slapped a PVA solution to brickwork on internal walls prior to render, I GUESS that this situation is no different. Truth be told I've already bought six 10L tubs of Sandtex and the stabilising solution, about over a year ago. I don't see why not to both questions. You should have. Finishes are subject to high or low maintenance all of which are discussed at time of consultation. Volume. Product information. Delivery. handyman 2 New Member. Acrylic frame sealant is ideal for internal use to fill. Contains enough to waterproof a standard sized shower. Go all over it and knock off the loose stuff. 48. Rendering of chimney. 3. In my experience you can take of the damaged parts and patch in, but personally I would take it all off and start again, making sure that a good key is achieved in the scratch coat (1st coat of render). Product code: 252325. 99. I plan to re-flaunch my chimney in April when weather improves. Ideal for emergency repairs, filling and patching. 4-1 first coat and 5-1 second coat 3-1 is to strong it will be to brittle and might crack. Ready to Use. £ 21. Use stainless steel bellcast/render stop beads as req. RECOMMENDATIONS:Alchemy Plastering. Weather-Resistant. Click & Collect. B&L, Choose one or the other. DIY_Has123, Feb 3, 2021. Good shout? Also, not location of air bricks. Run a hose against it. Bonding is not a good idea on external walls, it attracts water to it. PAGE 1 OF 2. . It's a concrete block wall, approx 600mm high. Order Sandtex Quick-Dry Stabilising Solution 5Ltr at Screwfix. Before adding any render, ensure the wall is damp to the touch, but not running with water. waterproofing paint. setting manholes and repairing rendering and floor screeds. £11. Also with spring weather being variable in temperature, would you recommend covering. A couple of potential problems come to mind; concrete on a stud wall will almost certainly crack and fracture over time - I think. Coverage per Litre: 6m²/Ltr. Ask a question. Screwfix Community Forum. Bostik Roof Repair Compound Black 1kg (57518) Bostik Roof Repair Compound Black 1kg. FREE next day delivery available, free collection in 1 minute. Now I am intending to use cement, sika waterproofer and sharp sand and render this wall. 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. Features include multi-pockets, adjustable designs and reflective tape so that you can be seen. Volume. Masonry cream is snake oil, it does nothing. Buy online & collect in store in as little as 1 minute. 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). It will also be 'attacked' on its front face if the render is in contact with the soil/lawn - so it might be best to have a 100mm gravel trench at the foot of the wall (or. Screwfix Community Forum. 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. Step 6 – Apply First Coat of Render to Wall. Voltage Proof at 3000V. 1. Covers up to 4m². 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. Product Type. I want a rustic finish which is why I'm not going for tiles, and ideally would like something like lime render but would like to know if their are any waterproof plasters / cement or whether you can use what you like but simply give it 2/3 coats of a suitable varnish. Apply Water Seal directly onto damp surfaces to provide long lasting waterproof protection within hours. com. Ensure wall is sound, clean and ready to receive HardieBacker®. Hi handy 007 1/2. 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. Using a small grinder, cut out all loose chunks of render - & open all sketchy cracks. Hello. Render up to (or very slightly below) the damp course, finishing with a 25° slope down and outwards from the dpc. good heavy scratch will help to reduce the suction, dont leave the floating coat after the scratch too long, very important that you reduce the suction or your scratch will turn to dust when it dries out too fast. The render around the mock Tudor beams on the outside of a property I am looking at is cracked. PVA sealer is an extremely versatile, odourless, waterproof and non-toxic adhesive that is suitable for a multitude of tasks and requirements. Ideal for Use in Basements/Cellars but may also be Used as an External Coating for Concrete, Brick, Block & Bonded Renders. Cold & Heat-Resistant. DIY_Has123 Active Member. very big difference. I'm quite a confident diy'er and wanting to try rendering a garden wall for the first time. Click & Collect. So I think the order from inside to outside should be:- inner skin, waterproof membrane, studding, insulation, blockwork and then your render. 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. Totally forgot as was so busy myself and only had a spare few days to do it. It sets to a rock-hard finish and can be overcoated in 24 hours. 2) Fit a bellcast. £12. UK call centre ready for your call 24/7. Odourless & Solvent-Free. 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. all the best. Hi there, I need to find a suitable, waterproof render for a wetroom. I wouldn't re-render - leave the bricks open to the air. Order online at Screwfix. . Weber One Coat Base Render 25kg. Any advice would be greatly received, we dont want to knock it down. 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. Click & Collect. 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. Primer Paints. It failed in one area, and cracked off 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. 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. Shapeable to Repair Without Formwork. when i removed the old wood it crumbled so i pulled it all off. com. Low Odour. Cemenmt render will dmage the wall eventually - its not ok to do it. I would add some waterproofer as a matter of routine. It looks like I'd need 3 different types to do the job properly with that stuff but it looks like good stuff. Cement mix and mortar mix are ideal for a large selection of tasks including pointing brickwork and stone, repairing concrete and render and filling holes or setting posts. Reduces water permeability. Fast-Drying. + silcone the windows. 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. For Interior & Exterior Use. KIAB, Sep 18, 2015. Waterproofs Plaster, Plasterboard,. 1. Primer paint is required as an undercoat before applying the upper layers to any surface. Fine. Im an old skool plasterer ( 34 years old ) And when i am rendering i use sand,cement and waterproofer/feb. There are many external finishes - Finedown (smooth as in photos), Tyrolean, Pebble dash etc. With regards the tile adhesive Devils advocate is sound advice. Nail straight pieces of timber vertically & horizontally as required to external corners, window & door reveals. You might wonder why you need two (or more) coats. 'A' way to do it is this. 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. Delivery. 49 Inc Vat. com. Fast-setting, polymer-enhanced, cement-based repair mortar. Free next day delivery available. £13. The earth is retained in the garden with another wall. Sandtex Ultra Smooth Masonry Paint Pure Brilliant White 10Ltr (23771) (573) compare. Items are easy to install and use while. £13. Primer Not Required. Inc. Corrosion-Resistant. Febtank Super is a high performance tanking slurry for masonry and concrete. Easily secure a wide range of applications in place. Prop the hose up splashing against the wall and go and have a cup of tea. • Apply in temperatures from +5°C to +25°C. 3) waterproof paint the bottom exposed brick. com. Delivery. Adhesive can be manufactured from a range of substances, with each having different properties. View all: Bostik Specialist Paints. Click and collect in as little as 1 minute. Covers approx. On dense, less absorbent brickwork or render, coverage of the brick waterproofer can be increased by up to 10m² per litre. Volume. Adheres to damp masonry and is weather-resistant. If it was my place I definately would not paint it. 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. Volume. In 20 years of building and renovating, it has never been mentioned in our business. 99 Inc Vat. Come back the next day if you like, and see what sort of waterfall you have running down the back of the wall. VAT £15. Fillers and Putty are used to fill or seal holes, cracks, or gaps prior to further decorating. 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. Order online at Screwfix. I am also used 3:1 evermix plasticizer / waterproofer / retardant in the mix towards a strong ratio. Big Jumbo, Jul 27, 2009. Everbuild Solvented Grab Adhesive 350ml (6048H) (245) compare. Product Details. Ive been told 3:1 (2 parts sharp, 1 part builders sand) and not as wet as mortar for bricklaying. Suitable for a Variety of Applications. Click & Collect. the waterproofer will not work!!!!!the top coat must be at least 6 parts WASHED sharp sand 1 part lime 1 part cement{opc}. With top trade brands available, offering great quality products, you'll be able to continue working even on the. Hi Guys. 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. waterproof render. Handyandy - really. View all: Mapei Shower Waterproofing Kits. 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. the walls are new, 3 weeks old. Ideal for fixings in perforated brick, solid brick, concrete and aerated concrete. com. This is especially important if you apply a thick traditional multi-coat plaster. Delivery Next day available. Tarmac Once Coat Render is a pre blended render, just add water to apply. There is a white crystal deposit under left on the exposed render. Home Tags > rendering. Page 1 of 2 1 2 Next > Thread Replastering around doorframe with very uneven brick walls. 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. Login to save for later. When diluted with water it produces a gauging solution for improved adhesion, workability and waterproofing of mortars and cementitious mixes. Hi i've built some raised flower beds / planters out of dense concrete blocks. 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. the waterproofer will not work!!!!!the top coat must be at least 6 parts WASHED sharp sand 1 part lime 1 part cement {opc}. Developed to repair damaged masonry between brick and stonework. Sika Proof Liquid Waterproofing Admixture is a general purpose, ready to use, economic waterproofing admixture for mortars and concretes. Screwfix customers rate this product 4. VAT) Quick. £21. Weberend One-Coat Base Render (OCR) is a versatile pre-blended single coat application render, ideal for rendering brickwork, blockwork and concrete. 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. 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. apply the sand and cement to above 1/4 inch of the existing. Sets in 20 minutes. Scratch coat is 1 part cement, 1 hydrated lime, 5 plastering sand, with fibreglass mesh embedded. 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. Add for Delivery. Im nervous about it cracking so please can you confirm the correct mix to use. Product Type. 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. 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. Must be quite loose, but not too runny. High performance waterproof treatment for exterior porous surfaces. PVA is a water-insoluble resin which is typically white at the point of application, but dries colourless and has a high bonding strength. Screwfix Community Forum. You shouldn't use PVA for external render however they do make an external grade one but this isn't necessary. Mix it strong say 3:1:1 or 3:1 plus plasticiser. No waterproofer in render scratch coat. Quantity: FREE Click & Collect within 30 minutes. The inside of the wet solid walls seems to covered in wet sand and a black paint type substance as in the photos. Bonding is not a good idea on external walls, it attracts water to it. #3. i have a freshly scoured brick wall, having recently removed half an inch. £13. Not available for delivery. 8m)above newly-fitted french doors to render. You could have asked the plasterer to add a waterproofer to the render mix, but it's obviously too late now. Live in an old stone cottage,just chopped a load of original lime/horsehair plaster off some of the kitchen walls,rendered it couple off weeks ago with 1st coat 3 sharp 1 soft 1 cement and redermix aditive,put the soft in as did a 3. 99Inc Vat. . Buy Cement Mix at Screwfix. Apply directly to damp surfaces. Sharp sand coarse and fine, lime and cement in 2 : 2: 1 :1 ratio for bottom coat ( scratch ) coat, with waterproofer. 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. drill driver New Member. If I render with febond sbr sand and cement render then I can use 10mm travertine tiles. For Interior & Exterior Use. 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. have 2, or even 3 cups of tea. Applying the board directly onto the membrane with thin adhesive and mushroom fixings. From what I’ve read on this very helpful forum, it’s a water/salt problem. Suitable for a Variety of Applications. Home Forums > Screwfix Community Forum > Builders' Talk > Rendering. Buy Fixings & Fastenings at Screwfix. Softwashing Render. Long-lasting immediate fix. As the title suggests is artex that you use to decorate ceilings waterproof?chillimonster Screwfix Select.