I am in the process of moving our kitchen to an extension, built about
twenty years ago, and I have discovered the interior walls are built with
thermalite blocks. It is wonderful to drill into but I have concerns about
securing wall cabinets to it! The cabinets will have to carry quite a bit
of weight of crockery.
Any advice on the best type of fixing would be much appreciated.
If there are no special fixings for Thermalite and it will take normal
plastic wall plugs then all I can suggest is that in addition to using the
usual wall cupboard brackets that you also fix one or two horizontal wooden
battens to the wall with long screws and wall plugs well into the
Thermalite. These battens will be behind the wall cupboard and you can screw
through the back of the wall cupboard into the battens. The back of the
cupboard may be hardboard therefore you will need to put some corner
brackets level with the battens so that the battens are fixed to the sides
of the cupboard. I have used this technique when both the usual cupboard
brackets coincided with electric cables under the plaster and it was easier
to use wall battens than to dig out the cables and re-route. You might also
be able to reduce the weight to be supported by storing some of the heavier
crockery in a base unit.
Yes I noticed that bit and thought it a very worthwhile bit of advice. The
secret with drilling into Thermalite seems to be keep the hole as small and
as parallel as possible.
I found this link http://www.userview.net/aircrete.html and I think I might
go for the twist lock anchor.
Defo use a steel bit. The small 'wings' on a masonry bit expand the hole &
loosen the fixing.
The helix type of fixing are spot on - they will hold a cabinet + contents.
If you are really worried, use a batten fixed with 4 of the helix fixings &
then screw into that.
Also, drill the hole for the fixings 1mm smaller than specified. The
fixings will still hammer in fine & they will be nice & snug.
(ex Thermalite salesman)
Use Wickes nice grey rawl plugs - they're excellent.
All my kitchen cupboards are hung of the wall with 'em (Thermalite behind
No casualties in the last 3 years and heavy objects in the cupboards.
They adhere well to Thermalite with no slippage - and they don't fall apart
"dmt" <darkscotATlycos.co.uk> wrote in message
Well I investigated the range at Wickes and plumped for their 'Universal'
fittings (Screwfix also do them:
http://www.screwfix.com/app/sfd/cat/pro.jsp?ts 830&id 669 ), complete
with screws. The pack instructions said use an 8mm masonry bit but as per
previous advice I used a 7mm steel bit. As it happened a 7.5mm bit would
have been better as 10% of the plugs bent as they were hammered in, once
they bend you may as well give up and try another. Apart from the minor
issue though they went in superbly and are rock solid.
I did try a conventional, basic wall plug to compare and that was rubbish.
I think I will use these universal fittings from now on, definitely worth
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