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I don't know much about this but I believe you can tell by the brick pattern from the outside - they are usually laid lengthways with a regular pattern.
However, whether you have a cavity or not, mounting a TV (unless its HUGE) probably doesn't need to be overly strong. I have had TVs mounted on plasterboard on studs and plasterboard attached with dot and dab. Nothing fell off.
Some good anchor type bolts would be belt and braces, I'd probably be too lazy and just chuck a couple of rawl plugs and regular screws in and be done!
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I'd have thought it extremely unlikely that it was a solid wall if it's that recent.
The usual tells are: age of property (pre- or post- 20s 30s), brickwork bonding (stretcher bond for cavity, header / bonded for solid), and wall thickness (9" vs 12").
If it's an extension, it may be in the plans submitted to the council.
I'm not sure how either would affect how you mount the TV - for an old wall, crumbly brick might be a problem, I guess.
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I'm going to put 50p on cavity with the inner being block work, concrete or thermolight, dabed with plasterboard covered in old blue plaster (other variations available) - anyway it'll give you a good 3-4" to play with the rawl plug - to be going into the blocks
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andos
NotThamesWater
bluehuw
@TTM
Sorry for the really basic question, but I’m trying to determine whether the walls in our extension are solid or cavity. I believe it was built in the ‘80s and measures 12” (see pic).
I want to mount a tv on the wall and want to make sure I use the correct method. Cheers
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