I am doing some dot and dab, the first wall went up OK, but the second wall sticks out further at the top and bottom, but moreso at the top two corners. now as for mechanical fixings then i wouldn't use them on this. Grab your combination square -you could use a ruler or tape measure to do this too- and set it to either 5 or 6 mm. " - Info as per Kingspan K118 brochure sitework section and "Drywall adhesive dab bonding must always be used in. In today's video I will be showing you how by installing insulated plasterboard, you can transform the warmth of your house! You can buy me a coffee here htt. . so if you have 8x4 boards do 8 dabs up 4 dabs across so in total you will have 32 dabs on the board, sounds a lot but it isn't. Boards can be expensive and fragile. Fischer Duopower Fixing Set 8x70mm 4 Pack. 23 Mar 2009. 75L. I put the adhesive on the board and then have two people lift it up to vertical before gently pushing it onto the wall with a clean 4' spirit level to guide where to bash. The first option is to try screwing the boards back with a standard plug and screw. )PIR CORE MOISTURE RESISTANT INSULATED PLASTERBOARD PIR moisture resistant insulated plasterboard so called vapour barrier board is a 3 in 1 insulation, drylining and moisture resistant product that consists of a 12. Gyproc DriWall Adhesive for Plasterboard - 25kg Bag. Conclusion. Knauf Metal Furring Channels should be bedded into the dabs and continuous bands of Knauf Plasterboard Adhesive. Knauf Fill and Finish Light - 5kg. if you have enough room d n d again with adhesive strip 3" around all edges ,will stiffen it up even more. Unfortunately a lot of these dots and dabs have come loose over time and so I can now rattle the boards. 35 £ 0. Knauf Wallboard Square Edge 1800mm x 900mm x 12. Like 0. Delivery. While dot and dab is not recommended, it can be used to hold the boards in place, before using a mechanical fixing to fully secure the boards. Dot and dab disaster, uneven wall, need some advice please. It is highly likely that damp will travel through the dabs and the problem will persist. Hi - you can dot and dab no problem but if it were me doing it that way I would go for a waterproof grade dry wall adhesive rather than standard. #5. Easily! Just follow these steps: Mark the required location of shelving bracket holes. Trusted and independently tested incredibly strong fixing, 90kg safe working load. Commonly referred to as drywall adhesives or bonding compound, it can be applied in many ways including the dot and dab method or directly onto the area that is being re. Timco Multi-fix Stella Fixings Red M5 X 55mm 25 Pack. Using Wickes "plasterboard adhesive" (comes in green and white 25Kg bag) i mixed it to a consistency where the adhesive holds it shape when applied to the. gps said:. Use recommended adhesive and literally glue to wall, some prep required, remove dust and loose material from wall and seal with SBR. Mar 30, 2015can u dot dab onto a skimmed wall ?? ive told you cant, he said the only way is to pva the wall, and where your going to put the dabs is to put sand on the wet pva, so when it dries you have a key. 4 Jan 2018. Dot and Dab Insulated Plasterboard. VAT. but you'd be better off using Handiboard or similar which isn't affected by damp. Check out our other How To videos here:. I would drill a few holes either side of where the cables are needed to go in the wall. iWindmill • 3 yr. 4: Apply the Adhesive Using the Dot and Dab Method. Add powder to clean water (usually 10kg material to 5. For the longer term, the walls can be well insulated using dry lining. Once the adhesive has set then mechanically fix through the dabs making sure you use the correct 35mm washers. Any sleeving that protects the copper from the plaster etc will work. Corefix 100 heavy duty dot & dab wall fixing, easy to install… Read more. Product weight. Much better to use plaster board adhesive. You’ll need three vertical rows for each board, placing each dab 6 to 8. 550. 5mm. 1. These glue dots for candles are pressure-sensitive dots engineered specifically for candle-making projects. Was a cement based one. In new build houses they often use dot and dab as it means they can 'throw them up quick', keep the wet trades down to a minimum and have a quick turnaround before getting the decorators in. You should try to apply adhesive around the wall’s edge to create a strong fixing. Commonly referred to as drylining, the dot and dab plasterboard process involves bonding the plasterboard directly to secure walls. I'm not, and never have been a fan of dot and dab, so for me, i would batten and board full stop. hallbeck, Feb 1, 2012. #3. Jun 27, 2016. . TS EN 13963. Once fully cured, this glue is both paintable and waterproof meaning it’s washing machine safe and can withstand rain. Will be fine,reason coving falls down is the adhesive dosent like sticking to paint. Andy Allen. #3. 0. The installation should begin in an internal corner or around a window or door reveal. Fixing them to timber battens. These mechanical fixings for plasterboard faced thermal insulation can be used in conjunction with dot and dab adhesive or in place of it. Volume of adhesive (L) x Specific gravity of adhesive (SG) = Weight of adhesive required (kg) Specific gravity can be found on the material’s data sheet; it is a measure of density. Soudal Plasterboard Adhesive Foam is a fast curing replacement for traditional mortar adhesives. 022 W/m. Ideal for Dot & Dab application. 100% Secure payments. Product code. It is far quicker to use this method than the traditional lath and plaster technique and is also ideal for those wanting to cover uneven areas. Room is very small,so can't afford to build a stud wall or use rock wool. Fast installation, no specialist tools required, drill, 10mm bit, hammer & screwdriver. Preparation: The wall surface is cleaned and prepped to ensure it’s clean, dry, and free from any debris. Its unique steel core. Aim to get your dots around eight inches apart. Jim: that’s right, Dot and dab technique is applied using large dollops of plasterboard adhesive strategically trowelled o n the wall. 42 incl VAT. And install 22mm insulated plasterboard over that. I share your concern re the suitability of foil as a substrate. Cheers It’s a quick and easy way to attach plasterboard, and is one of the most common methods used. 5mm or 12. The cons of dot and dab are the plaster is more likely to crack than a traditional 'wet' plaster finish. £5. You can use either, dry-wall adhesive (powder and mixed with water) or the foam adhesive. £ 9. Wickes plasterboard plugs and fixings are ideal for use in all types of hollow board materials. Fix with "StixAll ' and mechanical fixings like screws and plugs. Use with either powdered or ready-mixed jointing products. It provides insulation against heat, sound and moisture. DIY womble Well-Known Member. Buy a bucket trowel, hawk and a gauging trowel, and load a dollop onto the wetted hawk with bucket trowel, then. Essex. Installing thermal boards with this technique is actually a really easy thing to do as long as you fully research which installation is right for your project and what thickness of insulation will achieve the U. 21 Aug 2013. Preparation: Create 5 fixing holes through the Marmox Multiboard. ago. Ok so a while back i got the plasterer to board a wall up and cover the copper piping thats been chased into the wall and up to the basin. #7. Add to basket. Reaction score. You'll. (Worth also checking websites for these products - I'm sure they'll give exact specs for fixing. 24. Volden Plasterboard adhesive 10kg 8. I agree it is probably the dot and dab adhesive creating a thermal bridge to the colder wall behind and condensation forming there. Anything from 8 to 10 quid per board, as well as a thermal board at 10. The other walls presuming they have a cavity and have a damp course will be fine to dab. A multi-purpose gypsum-based adhesive for use with plasterboards and insulating laminates. 1. Depending on depth the plaster it needs to be thoroughly dry. 5mm plasterboard is much more difficult to dot'n'dab, the thicker board is much easier. Place it on the inner edge of your door jambs and mark them with your pencil all along. 5mm or 12. Why dot and dab plasterboard is used. Adhesive Foam Shapes . I did a search and couldn’t find anything similar, probably as nobody. Corefix is ideal for fixing heavy items such as TVs, radiators or kitchen cabinets to dot and dab plasterboard walls with a safe working load of 100kg in masonry blockwork. Genius Gun Plasterboard Adhesive Foam by Soudal is a fast curing polyurethane adhesive that provides a simple, clean and efficient alternative to traditional mortar based methods. Re: Dot and dab or batten. I have heard all sorts of negative stories e,g cold spots etc. NoMorePly 6mm PrePrimed Fibre Cement Tile Backer Board. I always use dab and if you use the wickes stuff its white? B. Colour Features & benefits. British Gypsum Gyproc General Purpose Drywall Plasterboard Adhesive 25kg. Before you start you need to seal up the wall especially if it's new brick, block or plaster. yep the wickes plasterboard adhesive or travis perkins,etc do dri-wall adhesive all very similar stuff. 1,088. In conclusion, you should never dot and dab foil backed plaster boards. by steviejoiner74 » Sun Oct 20, 2013 8:23 am. For all wall types, brick, block and lightweight concrete. Or anything similar. Soudal SOUDASEAL FR Foil Sausage Grey 600ml - Box of 12. 2 weeks ago we boarded the room with dot and dab, and one week later the plasterer came and skimmed. Strong, long lasting and damp-resistant, gun grade sticky foam. If you’re fixing the skirting to a stud wall, then. Offer fitting. I would always pva wall first aswell to get a good bond. How To Install Insulated Plasterboard Using Dot and Dab. The adhesive that you use for dot and dab contains water. trowel in plasterboard adhesive to fill the gaps behind the batons. SDS or hammer drill, plus drill bit. Details. Refresh your interior with our thrifty and inspired DIY painting projects. I'm about to start one of several room insulation projects. 99Inc Vat. Spray in plasterboard adhesive foam so it fixes the board either side, cut a chase out the plaster board with a multi tool and old blade. **** eh!!!, i forgot that this is the DIY channel us PRO's ( Running a plastering and dry lining company for the past 15 years turning over £2million a year buying in more than £1/2 a million pound of plasterboard and a vast amount of other British gypsum products being a board member of the FPDA,,federation of plastering and drylining assocation,,) i shall reiteraite it for you,,, Years ago. trowel in plasterboard adhesive to fill the gaps behind the batons. Next Last. Hello am giving dot and dab a go, but have just read on the Knauf guide NOT to use Knauf adhesive with moisture resistant boards? what do you use then?? Or can you Pva the back and still use it? Was supposed to be doing it today in prep for tiling, any advice much appreciated. I understand dot and dab (or other adhesive) is the main fixing system, with - as you say - a few mechanical fixings added to prevent them falling off in the event of a fire! Mechanical fixings - plugs and screws are fine. Would the plasterboard. You can get posh fixings, the name of which I forget, that have a steel tube that bridges the void so you again have something solid to pull down onto. 2. Evo-Stik Waterproof Ceramic Wall Tile Adhesive 5L. 77. Order online at Screwfix. #3. I've just been knocking on various bits of it, and have good news and bad news (I think) - in the area where I want the TV to go, good news is that there is lots of hollow space which goes straight down to. Our stock moves fast! Secure your product now with Click & Collect. The dot and dab method serves as an efficient alternative to studs. chip off the block New Member. 1m x 1. 5mm boards, the overall plasterboard adhesive thickness is around 25mm. If you must use adhesive, make sure there's a full perimeter bead, and that the potential 'convection space' formed by the adhesive rim is broken up into small sub-areas. Gorilla Glue - 1 Litre. Apply a dab of adhesive to the wall (each dab of adhesive should be around 750mm x 250mm, covering 20% of the board area). Guidelines should be marked on the floor and ceiling to establish the new wall plane and on the wall at 1200mm centres to indicate the position of the boards. Prime walls first with acrylic primer. I'm confused, I'd like to know if & where or what the Building Regs are applying a continuous bead of Dot n Dab Adhesive when fixing plasterboard to walls ? I have built a single story pitch roof kitchen extension and am now at the stage where I want to dot n dab the thermalite walls with 12mm straight edge Gyproc plasterboard before. 5mm plasterboard + dot and dab adhesive (roughly 25mm) and still give a good fixing in the wall. Twitter; Facebook; LinkedIn; YouTube. Guest. Dot and Dab is a leading provider of professional Plastering & Rendering services for residential, commercial, and industrial properties in the UK. Just a quick one does anyone know if you can dot and dab p. Baton and space using lengths of wood/plywood spacers and no-more-nails. Expamet Thin Coat Angle Bead 2400mm x 3mm x 0. I would like to now if I can dot and dab this wall. Wickes Reinforcing Joint . 5L. I would use battens *over* the Pu. Additionally, you can use the dot and dab technique to achieve an even finish. If it alternates between solid and hollow sounds you most likely have dot and dab as this shows where there is adhesive / no adheisve. Without using any adhesive, a short board will need two rows of five (10) or if the board is 12. Next dampen the wall again and apply a coat of tanking slurry or solution to the walls surface. #3. It's cheap and nasty,,, the easiest, cheapest, way to plasterboard any solid wall in a room. You will need to get it off with a bolster chisel and will come off as fast as you can goFeatures & benefits. Olican Private Member. "Dot. Find out more. Under building regs - you now have to use insulated plasterboard on all external walls. What will be the long term problem and can I ask that they be reapplied covering the full tile adhesive on wall tech. I usually squirt on the board, leave for a few minutes, then place board in position and hold in place for a 2-3minutes using a couple of length of straight timber and a spirit level as a guide. Knauf ProRoll Light Using foam adhesive and/or insulated PB will prevent the salts being drawn through the PB by picking up moisture in the room air. £9. get yourself some dry wall adhesive and dab the boards to the wall with this. This would improve the temperature somewhat, reduce any condensation and also allow the wall to breathe thanks to the studded membrane. Check Price on Amazon. How to identify dot and dab plasterboard. Gyproc DriWall Adhesive is the tried and tested way of achieving a perfectly level wall when dabbing plasterboard linings to existing backgrounds like masonry walls. Suitable for all brick and block types, including lightweight blockwork. Drywall Adhesive (otherwise known as Bonding Compound) is an essential component in the installation of both standard and insulated plasterboard. Corefix wall fixings, Fixings. then plasterboard, screws, joining tape, filler as usual. I have just dry lined my entire downstairs. Insert the cartridge into a caulk gun. Plastering Tapes & Adhesives. 31. Finally the TV is hung from the bracket using the. Quick and easy to use, ideal for fixing plasterboard, insulation board, floorboards, shower/bathroom boards and most common building substrates. 021 W/m. Dot and dab is a fairly straightforward and simple technique to master. Im looking for a bit of advice on dot and dab on to a painted tyrolean wall (now internal) the paint seems solid and was thinking to copy a method I have previously used for a tanking system using SBR, Cement & Sharp sand slurry painted on and left overnight. Will the pipes be ok in contact with. Then you position your sheets of plasterboard on those dollops and tap the plasterboard level to meet the existing surface. With dot an dab,,, it's cheaper, sure, but i've. I used this adhesive instead of usual dry wall adhesive to combat any damp patches coming through. Corefix fixings are a great way to fix to dot and dab walls. 48. A dot and dab wall also known as a drylined wall is where plasterboard is attached to a solid brick or block inner skin of a cavity wall (or in certain cases a solid wall) by the use of dabs of adhesive or. Hampshire. 42 incl VAT. dot and dabbing is fine, and with this technic you will get a cavity, which will allow air to pass between the wall and plasterboard, is it an old property, was the plaster so bad it had to be removed, dont you think it would be better to solve the damp issue, as batterns can rot over time, if subjected to damp conditions. If the adhesive on the back of the coving has a layer of paint on it, and where the coving was applied to the wall, its back to bare plaster. 2) Ive had another quote: £200 + materials or £240 all in. #3. Just i've got 2 strips to do 300 wide x 2400 long and dont want to buy another bad of adhesive if i can use some of the multi or bonding i've got left. net. This method can be more time consuming but will produce a satisfactory result. In this video I show you how to dot and dab plasterboard / drywall to a wall using plasterboard adhesive. Drywall Adhesive (otherwise known as Bonding Compound) is an essential component in the installation of both standard and insulated plasterboard. Water in bucket first, few inches, then add bonding compound bit by bit until you get a fairly thick consistency kind of like a tough angel delight I. Removal on these walls is of course damaging the existing boards. Controllable Hand-Held Foam. stevie22, Jul 25, 2023. Now all the places were the adhesive touches the walls and the boards is showing round. I live in an old house built in 1928, at the time of its conception the construction used was ahead of its time, we have cavity walls and dot and dabbed plasterboard walls. No more crushed plasterboard! Corefix is an engineered plasterboard fixing designed for Dot & Dab walls (plasterboard over blockwork. You could use a grab adhesive but I would advise against that also. 3. The problem is not only that. We sell 25kg bags of high bond strength adhesive. Once the adhesive has set then mechanically fix through the dabs making sure you use the correct 35mm washers. The. SCHLUTER DITRA TROWEL – 11/64 X 11/64 SQUARE NOTCH. dabbed the bathroom walls and I have done the same over the tiled wall and on returning this morning t have noticed the adhesive has not adhered to the tiles. Knauf insulating laminates reduce CO2 emissions as well as reducing energy expenditure, offering short payback periods. Suitable for fixing foam insulated plasterboard - Celotex PL4000 or Kingspan K17 and K18. Failing that a few squirts of construction adhesive would do the job. 99. 5mm or 10mm thick, three rows of four (12). How to install Marmox Multiboards on a solid wall - dot & dab fixed. Yep my house, and probably 5-10 years! Dendad1218. Started at one end of the room with my trusty old wood chisel and walked along steadily giving one tap per tile. This then cures and its ready for finishing plaster. Metal Furring 5,6,7, 8 When using the Knauf Metal Furring system, dabs should be applied at 450mm centres and each dab should be 200mm long and 50mm wide. Ask a question. 5411183135048. We supply trade quality DIY and home improvement products at great low prices. Bathroom renovation parts 7/8#plaster #plasterboard #drywall #wal. . The description of the product is "Vapourshield is laminated with a metallised. Use a PVA and water mixture of around 5 to 1 and paint the wall and wait for the PVA to dry. Discussion in ' Builders' Talk ' started by Monkey Chops, Jun 27, 2016 . Apply the acrylic sealant adhesive approximately 25 mm in diameter and position them at 300 mm centres. Kingspan GreenGuard – Extruded Polystyrene. 29 May 2011. Vitcas HB60 is a heat resistant adhesive designed for use in the construction of stoves, pizza ovens, tiled stoves and joining outdoor constructions, such as grills and fireplaces. When i challenged him about it, he said that theres nothing wrong doing it his way and that there wont. 76 incl VAT. At 11kg/m2, the new board is 25% lighter, making the installation easier and faster than before. If you want the adhesive to stick properly then get hose pipe and stiff brush,making sure to damp the walls and scrub them down properly,if the prepartion is good then the end job will be perfect. Along with this, you can also use the dot and dab to create an even finish. 15 Jun 2014. TIA. But what sort of adhesive do I need? Bloke at wickes was a little useless but I reckon I need the powder bonding. Wet plastering is good - but dot and dab is faster, less messy and it dries much faster. Dot and dab walls comprise a solid wall with plasterboard stuck onto it using “dabs” of adhesive. Supplied with a tapered edge for direct decoration or plaster finish and can be installed using. Needs to be fixed using a notched trowel spread the wall with the adhesive and fix the tile to achieve a solid bed. Keep out of reach of children and animals. We supply trade quality DIY and home improvement products at great low prices Gyproc DriWall Adhesive is the tried and tested way of achieving a perfectly level wall when dabbing plasterboard linings to existing backgrounds like masonry walls. roughcaster said: I wouldn't have dot and dab anyway. The first picture below is a thermal image of a wall that has been dry-lined using the notorious dot and dab method. It can be applied by 'dot and dab' method and will stick easily to any type of brickwork or blockwork. . I removed some ceramic tiles in a bathroom once that were dot and dabbed. K (25-44 mm) 0. Goldblatt 2 Pieces Pool Trowel Stainless Steel with Soft Grip Handle, Includes 16” x 4-1/2” & 14” x 4” Finishing Trowels Set, Lightweight Alloy Mounting, Round End. EVO-STIK 2. Just follow the instruction on the product. com. Reaction score. Use with either powdered or ready-mixed jointing products. If you don't want to comb the adhesive on the wall then it will be fine to leave the old adhesive and coat the wall with a PVA sealer, leave to dry and use the old dot and dab method for reapplying the new tiles. Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high performance rigid insulation board made from Xtratherm PIR core faced with composite kraft paper bonded to 9. Country. This helps create a good bonding surface for the adhesive. However, there is an external windowed wall which I have stripped back to brick. Use the piece of timber as a floor wedge which will keep the plasterboard off of the floor whilst the adhesive is drying. Standard. Knauf Plasterboard Adhesive is a multi purpose adhesive used to direct bond Knauf plasterboards and Knauf insulating laminates to common clay brickwork and blockwork, majority of concrete blockwork, no-fines concrete, metal lath and plasterboard. Sold & shipped by B&Q (5) Write a review £ 7. Add to basket. Aerosol. Dot and Dab is a very quick and cost effective method of installing plasterboard, however it does pose significant issues when it comes to fixing items to the walls. Add to basket. SBR wall and use tile adhesive to dot and dab boards to wall, levelling as you go. The Gyproc drywall adhesive is a high-quality general purpose adhesive providing increased strength and safety in wall and ceiling applications without leaving weak points. Apply adhesive around the perimeter of the wall and around any openings such as windows and doors. If you feel the drill bit hitting blockwork within about 20-30mm of the wall surface, then it’s probably dot & dab. Hi, just had some plastering work done and the dot and dabs have come away from the wall!!! just asking the question his there anything I could do to re - connect it to the wall instead of taking it all down ? has its still. Having said that - I've never used drywall adhesive on a wall that's been previously plastered and stripped. Also, in my experience (as I'm a DIYer) the 9. Check at the board edges how tight you are going - if against smooth plaster, I'd be going less than a 10mm gap. Use it to fill cavities and for bonding plasterboard to walls. Accurate Trigger Control. 5mm watherproof plasterboard factory bonded to PIR insulant. take the old stuff off mate as people have said above then to give you better sound insulation apply a couple of thick coats of thistle sound coat, then dot and dab sound check plasterboards over the top, skim and finished (obviously paint at. When choosing our insulation, there is a wide variety of benefits: Cost-effectiveness. They leave no mess, totally clear and have an extra strong hold. 5060370711604. the vapour barrier wont allow any suction so the adhesive wont grab hold and the board will pop off. Knauf Drywall Plasterboard Adhesive is gypsum based for use with Knauf Metal Furring Channels and can directly bond Knauf plasterboard. Spread the adhesive on the floor using the smooth edge, then draw the trowel back across using the serrated edge. Each piece of dab should be 50mm to 75mm wide at 250mm long. Add for Delivery. This single wall defo don't dot and dab as the damp will travel along bottom of dabs onto board. Put brand new boards over the top of the whole wall. You will be better fixing battens to the wall and fixing the boards to them. While ‘dot and dab’ methods require only plasterboard adhesive to be used, mechanical fix methods would require either masonry nails, drywall screws, plugs or hammerfix screws. Even though this is adhesive, you meant to apply a mechanical fixing after the adhesive has set to the plasterboard. 60 per L. Reaction score. But need to board out a brick wall and release its easier with dot n dab. I have seen people use rawlplugs and screws near the corners just to hold to the board while the foam cures. The insulated drylining wall insulation Unilin Safe-R SR/TB with certified lambda value (thermal con. Sometimes also referred to as Bonding Compound, for extremes in substrate conditions use with Knauf High Suction Plaster Primer or Knauf Betokontakt. VAT. you need to make sure you have enough fixings per mtr on the membrane it sounds like the weight of the boards and adhesive is too heavy for the amount of fixings you are putting in. The Wickes cement board is brilliant and easy to cut with fine hand saw. View all: Dow Solvented Adhesives. Surrey. 60min. Yesterday I came across Insta Stik which is adhesive for plasterboard instead of dot and dab. I would advise against dot and dab adhesive as it's simply not intended for that application. Cut a Repair Patch. DPM on the walls,treated 2 x 2 battens on top, 25 mm foil backed celotex friction fitted between battens, leaving a 25mm gap between insulation and wall, 25mm celotex across the battens,plasterboard or Ply over that. Get the best advice for all DIY and home improvement today! From fixing ceilings to creating storage racks, we've got what you need to help with your project. Arms. From your starting point, apply adhesive to about 1m2 of the floor using a notched gauging trowel. You have a blob of wet adhesive against the paper on the board which initially weakens the bond between the paper and the board until it dries out. ★★★★★. The drying process for dot and dab takes around 3-4 hours. This one requested: 4 x bags sand. Bostik Cementone Plasterer's Stabilising Primer - 5L. Press them firmly as you apply your dots to make sure they’ve adhered to the wall. As the name suggests, this method involves using ‘dots and dabs’ of adhesive over solid wall linings. With the ‘dot and dab’ method of using adhesive, however, the adhesive coverage could be as little as 50%, sometimes even less, the potential consequences of which are fairly obvious – the tiles can easily drop off or crack. No waste or mess. Everything you need to know about dot and dab. Wickes Spring Toggles 6x80mm 20 Pack. If the Artex is painted, you would also need to make sure that the paint is not flaking away or loose. This single wall defo don't dot and dab as the damp will travel along bottom of dabs onto board. #1. Maybe shelves or picture frames, nothing heavy like TV. Put brand new boards over the top of the whole wall. Site temperature is to be kept above 5 degrees until dry. Plasterboards and Knauf Insulating . Hi there, Bit of a newbie to plastering, but have fixed plasterboard to wooden battens in the past. . Hardi is excellent on floors. to fix wedi to a solid wall you punch equaly spaced holes through the board spaced 100mm from the edges every 300mm and down the center off set verticaly by 150mm, apply your dabs of spf rapid on the back off the board over your punched holes, set the board in place. Thirdly & most worryingly, he has used a method i believe is known as 'dot and dab' when tiling the wall tiles. Apr 20, 2013. Doink New Member. Don’t dot and dab – applying your adhesive in this manner creates voids between the substrate and the tiles which can cause the tiles to crack from pressure after installation – this typically happens more with floor tiles but it can occur with wall tiles too. My bathroom tiles have been applied using a dot and dab tech direct to the wall. Dot and dab can be used with a range of different adhesives, and involves the application of plasterboard. this is due to the low grade paper and adhesive used,,,, British Gypsum specified this change in Oct 02' kjm, Dec 12, 2004 #8. Instead, you should completely remove all loose plaster before over boarding.