As a process, dot and dab is a quick and relatively inexpensive way to plaster a wall, whilst also being effective in uneven areas. The process is time-conscious and cleaner than other methods as it doesn't require wet mixes, so time is saved as there is a much shorter drying period.
The cons of dot and dab are the plaster is more likely to crack than a traditional 'wet' plaster finish. It is also less durable in respect to getting 'knocked' - think angry teenage punching a plasterboard wall. Additionally, getting a decent fixing in dot and dab for fixtures and fittings can be pain.
The obvious advantages of dot and dab is speed of application. But improved levels of sound dampening, thermal insulation, damp proofing, moisture resistance, and fire retardation can all be gained using different types of dot and dab plasterboard.
The standard thickness of adhesive dabs tends to be around 10mm once compressed between the board and the substrate. You also have the additional 12.5mm of the plasterboard sheets on top of this so, with thicknesses combined, you can expect an altogether depth of around 22.5mm.
It is in every new build house built 2000 to date, If you have aerated blocks then you need to sound deaden them to prevent the noise transmitting through them into other parts of the property.
Firstly, you must remember that the dot and dab method is only appropriate for attaching plasterboard to brick, blockwalls or concrete surfaces.
With dot and dab, you apply “dabs” of adhesive to a solid wall and stick the plasterboard onto it. This process creates a small void (usually around 10-20mm) between the wall and the plasterboard.
Before fixing plasterboard onto a wall, you must ensure that your wall is well-prepared. Paint a coat of polyvinyl acetate (PVA) mixed with water. It's best to follow the manufacturer's recommendation for the ratios. The preparation will ensure that your wall won't take moisture out of your adhesive.
Repeat the process until all your plasterboard sheets have been secured to the wall. Once dry, you can seal the joints between the plasterboards and skim the wall ready for decorating.
The best ways to attach plaster boards to a brick wall is to use either the dot and dab method, attach them to timber battens, or use a plasterboard adhesive foam.
The efficiency of the DAB system is ridiculously low.
The inefficiency of a DAB multiplex depends most on the wider frequency bandwidth and the higher frequency range used. Also, the current weaker ERP output effect from the DAB transmitters, although it uses a very high input power for electricity consumption.
Dabs can have varying levels of contaminants, THC and CBD levels that could potentially trigger a toxidrome leading to psychosis, neurotoxicity, or cardiotoxicity. We advocate for more research into how the concentration of THC in dabs can lead to such adverse effects.
In summary, the BFS Dot Drill offers a range of benefits, including agility enhancement, coordination development, cardiovascular fitness improvement, injury prevention, and versatility.
Mounting a TV on dot and dab insulated plasterboard
There are a few fixing options for dot and dab walls including anchor bolts or specialist steel-cored rawl plugs which transfer the load through the plasterboard and into the wall.
How to tell if you have a dot and dab wall? The easiest method is to tap on the wall whilst moving your hand around. You will hear that the majority of the wall sounds hollow and may even have a slight flex to it, however there will be hard, solid points dotted around.
Dampness will break down and weaken the adhesive (which is NOT waterproof) and possibly also the substrate (plaster or plasterboard, for example) thus greatly increasing the chances of the tiles dropping off or coming loose. Fixings: The tiles will need drilling where bath or shower fittings are required.
Blue grit generally takes around 24 hours to dry, however, the drying time can vary depending on the environment that the application is taking place in. It may take longer in lower temperatures than it would in higher temperatures. You should only need to apply one coat, so once it has dried it you are good to go!
Prep the wall
Before you start you need to seal up the wall especially if it's new brick, block or plaster. These can soak up the moisture in the dot and dab mix making it less effective. Use a PVA and water mixture of around 5 to 1 and paint the wall and wait for the PVA to dry.
As a result, fixing using dot and dab adhesive installation methods is not advisable - and plasterboard screws or plasterboard nails are essential fixings. The key is fixing the plasterboards to the ceiling joists, which form the equivalent support structure for the ceiling as studs do in a stud wall.
Primers act as a seal, which won't only block out paint penetration into the drywall but cover small flaws too. Although drywall repair is a must before painting for the best possible results, tiny blemishes are easily covered with the primer.
The bituminous coating must first be completely removed and the surface prepared, as usual, for an application of Tanking Slurry. Can I use a dot and dab application on top of Tanking Slurry? Yes.
Dot and dab is widely used because it can be used on both wooden and masonry internal partitions as well as ceilings and walls.
Down sides of dot and dab
Block work walls are generally built by bricklayers 'on a price' and as a result they are of a less than perfect construction, with frequent gaps and cracks that remain unfilled.
Mould spores can also appear on damp plasterboard surfaces. These damp patches occur when the plasterboard is dot-and-dabbed or glued onto the underlying wall fabric. The plasterboard glue permits the transfer of moisture and salts from the underlying damp fabric into the plasterboard, making that damp.
Simply tapping on the wall at various points it will sound hollow in most areas but there will be some more solid sounding areas, this would indicate that you have Dot and Dab Plasterboard.