Screws to fix upvc windows to timber.

[saveasteading]

A different daughter is rebuilding a conservatory in timber stud. She has had upvc windows delivered.

 

Has anyone advice on screws to use? 

I'm thinking that standard ones will rip through the frame, or need washers.

@craigof course, and other specialists' advice would of course be welcome.

 

I've only done this myself into steel framing, and used cladding screws complete with their washers.

[oliwoodings]

I put several uPVC windows and doors into my stick build garden room, just used the supplied standard screws, went in absolutely fine.

[Iceverge]

Depends on the windows I would have thought. They may need pre drilling if there is metal reinforcement in the frame. 

 

She could always use windows straps but if she doesn't want to then something like this maybe. 

 

 

[MortarThePoint]

Baypole screws may have a more discreet finish (smaller head). They have a finer thread so you'd need to check they're OK into timber

 

I think lots of windows go in with Frame Anchor screws (7.5mm) so they're still an option.

Edited October 30, 2023 by MortarThePoint

[oliwoodings]

Good point about pre-drilling @Iceverge, I had to do that in all mine.  And tbh even if they aren't reinforced, you'd want to predrill the pvc to get a nice clean hole.