Have you ever wondered how to hang a heavy TV on dot & dab plasterboard? Today I’m showing you how I do this using heavy duty wall bolts or shield anchors.
Watch the full video here:
What is dot & dab?
Dot & dab plasterboard is very commonly used in the UK. It’s the process of ‘gluing’ plasterboard (drywall) to the walls using dabs of plaster adhesive. Normally the internal walls are made of blockwork -- sometimes very lightweight blocks and sometimes medium or high density blocks. In this newer property medium density blocks have been used and they take fixings very well. As a result of the ‘dabs’ of plaster adhesive, there is a small cavity behind the plasterboard, normally of around 20mm. This means you can’t use traditional solid wall plugs since the bulk of the fixing will only be attached to the plasterboard.
Hanging a Heavy TV on Dot & Dab Drywall
This old plasma TV weighs around 30kg so it’s pretty heavy and not something you want to take any chances with. I decided to use wall bolts or ‘shield anchors’ to attach this to the wall -- these are pretty much the most heavy duty fixing used for domestic purposes. These expanding metal fixings can take huge weights and normally the wall will fail before the fixing does. They great for very heavy wall mounted cabinets, big heavy radiators and, of course, heavy TVs. I drilled 4 x 14mm holes in the wall for the shield anchor bolts using an SDS drill. I then used plastic spacers to fill the cavity between the TV bracket and the bolts, which were fully inserted in to the wall. The spacers help to stop the cavity from being crushed when the bolts are tightened. Finally the TV is hung from the bracket using the supplied hanging supports.
Alternative Fixings -- Corefix
Since making this video, a product was released called ‘Corefix’. This is a wall plug / anchor system specifically designed for dot & dab and are a great alternative to wall bolts in this scenario. For more information read this article.
Last updated: 8 Mar 2017
Originally published: 8 Mar 2017