Sub standard wall definition

ryantcb

I had a T.V fall from a mounted wall. The bracket manufacturer said they are not liable as it’s a dot and dab wall and bracket not suitable. They also mention at there being a void? Their installation instructions says they are not liable for fixing into a sub standard wall. Not specifically saying that they mean Dot & Dab. For me this could allow them to pick any wall type they like and claim it’s sub standard when their product fails. From the photos I’ve included can you tell me if this wall is sub standard as they claim or is it a sold wall. Or should it have been suitable to mount to? Also their fitting instructions to me look like they have fitted to a dot and dab wall.

stuart45

Dot and dab would normally have a masonry wall behind it. If the masonry is Thermalite blocks you can still get a decent fix with the correct plugs. As long as you fix properly to the masonry it should be fine.
Your diagram does not show dot and dab.

ryantcb

Ok. So from purely the photos would we say the wall is sub standard for a fixing as claimed or should the fixing have held. Trying to assertion if their claim in being a substandard wall holds any credibility.

stuart45

It looks like you had it fixed more to the plasterboard than going through more into the masonry. You may find there is around 30mm before you get into the blockwork.

maisie_cat

We have dot & dab on our extension walls and used resin capsules because we didn't think the nylon fixings were long enough. Your nylon fixings weren't deep enough in the hole by the looks so I'd say an installation problem. Did somebody install it for you or was it DIY?

grumbler

1. the plugs are very close to the wallplate - this isn't like in the instruction picture, where the plug is deep in the hole - see the middle part (the entire plug must be in the block.

2. more than half of each plug is twisted - this confirms the above point. This means that only a small part of the plug sat reliably in the block. The biggest part, that is twisted, was in the soft plasterboard and the gap.


Also, it's not easy to drill a good enough hole in a block. It can often have a bigger diameter than you expect. It's always worth using a smaller drill bit first and check the hole with the plug.

My opinion - incorrect fixing.#


ETA: in fact the direction of twisting indicates that the plug sat tight in the plaster and rotated freely in the block - either because the hole diameter was too big or because the plug wasn't inserted deep enough (as per the instruction).

ryantcb

Thank you all for replies