Screwing loose uPVC window to walls

[DIYNotIan]

Hi

Hoping this is a simple one, but wanted to make sure I get it right.... Which is never guaranteed with me

There's a small uPVC window in my bathroom which is a little bit loose. The whole window (including frame) has movement within the opening.

Some of the other windows in the house have screws going through the frames and into the sides of the walls in the reveal. So I'm presuming I can do the same here to make it solid.

Does anyone have any tips as to what screws to use and how to go about it please?

Many thanks

 

[foxhole]

Concrete screws.

https://www.screwfix.com/p/easydriv...V2u7tCh0pRAMlEAQYAiABEgI9KPD_BwE&gclsrc=aw.ds

 

[DIYNotIan]

Might be famous last words, but I'm gonna say it... That sounds easy enough

I'll be honest, I'd not heard of concrete screws. New one on me. AM I right to presume these would be used as the hole in the frame would not be large enough to put a rawl plug through? Or is there another reason?

Come to think of it, are there other instances where concrete screws are a better choice than screw and rawl plug? I've always used the latter because I didn't realise the former existed!

Many thanks

 

[DIYNotIan]

I've just been having a rummage and I found these... Are they concrete screws? Can you tell from a photo or any other way to tell if not?

Sorry to be such a DIY dunce!

 

[big-all]

I've just been having a rummage and I found these... Are they concrete screws? Can you tell from a photo or any other way to tell if not?

Sorry to be such a DIY dunce!

View attachment 250861

View attachment 250862

seen them somwhere before

 

[lostinthelight]

If it's a fixed pane window the frame is screwed and then the glazing unit fitted

 

[DIYNotIan]

seen them somwhere before

He he he

If it's a fixed pane window the frame is screwed and then the glazing unit fitted

No, it's an opener and a single piece so the inside of the frame is easily exposed. Here's a couple of pics.

Many thanks

 

[Mr Chibs]

Are the previous fixings loose, or aren’t there any?

if there aren’t any Masonry frame fixings would probably be your best bet, guessing around 110mm long.

 

[DIYNotIan]

There aren't any fixings in this one. Strange because other windows in the house do have them but this one doesn't. And it sees a lot of weather from the west (quite elevated in the Brecon Beacons). Thanks for the suggestions.

Slightly off topic, but before tiling I'll fill the small gap between the window frame and recess, which is around 5mm or so. Someone suggested expanding foam, but I didn't think it would be used on such a small gap? Mind you, I don't know a great deal about it. So thought I'd check here whether expanding foam or caulk/frame sealant would be best.

Also, you can see that black stuff sticking out. Is that some kind of damp membrane? Presumably I cut that back to flush with the window (or a little proud to allow for the tiles). But when filling the gap, should the black stuff be against the frame or the wall? I presume the frame but thought best to check.

Cheers

 

[big-all]

general comment
silicon seals gaps
foam seals gaps and gives a bit off fixing and insulates but need a finnish
in other words should never be the surface layer or visible

 

[^woody^]

Low expansion foam all the way around

 

[DIYNotIan]

Nice one, thanks. I used some frame fixings in the end, and will give the low expanding foam a go over the weekend.

Also, you can see that black stuff sticking out. Is that some kind of damp membrane? Presumably I cut that back to flush with the window (or a little proud to allow for the tiles). But when filling the gap, should the black stuff be against the frame or the wall? I presume the frame but thought best to check.

Anyone got any thoughts on this before I do it?

Cheers

 

[Wayners]

Mask it up to protect plastic and use foam. Foam sticks to upvc instantly so cover.
Few blasts of that and a few hours and all good. Window silicone around. Feet up

 

[^woody^]

Any DPC protruding from the reveal should be folded and tucked behind the frame, not cut.

 

[JohnD]

why?