Radiator brackets needs extending

[tomredsky]

We bought a bay window rad before we did the plastering. That was the first mistake as we put 50mm insulated plasterboard on the walls so the shape is slightly different now.

The plumber fixed some 4x2 on the wall for the brackets before the plastering but it still short by about 5-12 mm.
Any advice? Are there other brackets I could get? Add more timber behind the bracket? Or replace the existing 4x2 with 4x3?

 

[denso13]

Turn the brackets out the other way, what does that give you?

 

[Harry Bloomfield]

Add more timber behind the bracket? Or replace the existing 4x2 with 4x3?

Are you aware those brackets can be fixed in two orientations? One with radiator close to the wall, other with radiator further out from the wall.

 

[oldbuffer]

1. Some radiator manufacturers state that over a certain size, onle the smaller "from the wall" side of the bracket should be used. I suspect this is because the brackets are so thin the longer side is too weak.
2. I'd pack the 4x2s out with strips of plywood or similar.
3. Might be worth standing the radiator in place roughly where it will be once the brackets are fixed. Given the thickness added to the bay you may need to check whether the ends are going to stick out into the room.

 

[CountryFan]

As above - few options, or maybe board and skim the holes, making note of the timbers, and try again?

 

[Madrab]

Yea +2 - why don't you use a piece of ply to build the wood out till it's level.

That's the process I follow when coming across dot 'n' dabbed board over brick. When putting a really large rad on a wall like that I cut out the plasterboard and fill the gap with wood secured to the wall behind with large plugs & screws/anchors and leave ~12mm left, then fill that with plasterboard to level it out, now when the brackets and screwed up, they're into a wood backing and not a hollow backed cavity with plasterboard.

Can I also suggest you double up on the bracket screws with such a large rad, just in case.

 

[tomredsky]

Yea +2 - why don't you use a piece of ply to build the wood out till it's level.

That's the process I follow when coming across dot 'n' dabbed board over brick. When putting a really large rad on a wall like that I cut out the plasterboard and fill the gap with wood secured to the wall behind with large plugs & screws/anchors and leave ~12mm left, then fill that with plasterboard to level it out, now when the brackets and screwed up, they're into a wood backing and not a hollow backed cavity with plasterboard.

Can I also suggest you double up on the bracket screws with such a large rad, just in case.

This is the way to go. I had completely overlooked covering the timbers. Maybe use expanding form on the back of the plasterboard to pack the board out so its flush.