Hang radiator on aerated block wall?

[Draughtsman]

I was going to just drill out and glue in some dowel, nice and deep.

Rad (1200x400 4000btu) will go below window, is that a good idea? Are aerated block walls prone to cracking if you hang a rad on them?

Thank y'all kindly.

Dain

 

[fixitflav]

I was going to just drill out and glue in some dowel, nice and deep.

Rad (1200x400 4000btu) will go below window, is that a good idea? Are aerated block walls prone to cracking if you hang a rad on them?

Thank y'all kindly.

Dain

There are fixings available for all sorts of material, plasterboard (cavity fixings), through to solid stuff like brick or concrete. About 40 years ago I hung shelf brackets to an aerated block wall (bare, in a garage) using 2" No. 10 woodscrews straight in, no plugs. Lasted years till converted the garage to a bedroom. That was Celcon blocks, didn't find Thermalite was as good, but things might have changed.
Don't make a DIYers common mistake when mounting to a wall with 12-15mm cement render plus 3mm plaster, of using a plug about 25mm long and tapping in till it's level with the surface. The plug needs to be in something firm, with screw length to suit.

 

[securespark]

Looks like screwing straight in with a wood screw holds really well! Although the guy is a bit of a disaster...

 

[fixitflav]

Looks like screwing straight in with a wood screw holds really well! Although the guy is a bit of a disaster...

Is that an Australian comedy turn?

Woodscrews straight in seemed to give best results. Modern fully-threaded woodscrews probably better than the ones I used. If the OP wants to do that, I would suggest doing a couple of tests in a different place, to get the pilot hole dia just right. Should be OK, the load is moderate and nearly all in shear, not pull-out.

 

[Draughtsman]

Actually, that reminds me..

I have fired a couple of 90mm drywall screws in to aerated blocks before now, to support mirrors etc, they have really wide threads and, with a short pilot hole, that sort of depth really does get a good key.

They are quite tensile, I'll see how difficult it is to shear one. Failing that it's back to a deep dowel, glued in, with a long screw

Thanks for the nudge.