Replacing a window from the inside?
Discussion
We have a Victorian terraced house with a knackered window on the landing up to the loft rooms. It would be impossible to replace without scaffolding, so would it be possible to replace the window just working from the inside of the house? It's pretty small - about 12" high by 18" wide so a person would not be able to lean out easily.
gmaz said:
We have a Victorian terraced house with a knackered window on the landing up to the loft rooms. It would be impossible to replace without scaffolding, so would it be possible to replace the window just working from the inside of the house? It's pretty small - about 12" high by 18" wide so a person would not be able to lean out easily.
I did some of my upstairs windows from the inside - didn't fancy carrying them up a ladder. However as someone said, you'll have to get to the outside to seal the joins. But whilst you may not be able to cart a whole window up a ladder, maybe you can do it with a tube of sealant.J6542 said:
Panamax said:
No, no, and no!
Construct the whole frame inside out, apart from the sill. Removes any need for dangling outside or faffing about on ladders. i.e. glaze it from the inside (after painting, of course).
You can’t seal it from the inside, you need to be outside to do that.Construct the whole frame inside out, apart from the sill. Removes any need for dangling outside or faffing about on ladders. i.e. glaze it from the inside (after painting, of course).
Evoluzione said:
No that's wrong. It's a perfectly normal everyday practice to fit windows from the inside.
You can fit them from the inside, but you need to be outside to seal it, with a larger window you can lean out, but the op’s window is 300mm x 450mm so he is going to either have to get up a ladder or scaffold to do it.
J6542 said:
Evoluzione said:
No that's wrong. It's a perfectly normal everyday practice to fit windows from the inside.
You can fit them from the inside, but you need to be outside to seal it, with a larger window you can lean out, but the op’s window is 300mm x 450mm so he is going to either have to get up a ladder or scaffold to do it.

We had all the windows in our Victorian terrace replaced and all the upstairs windows were fitted from the inside. There didn't appear to be any issues or dramas in the process - old windows out, new frames in, made good inside and out before finally putting the glazing in. There was a very small one like the OPs (perhaps a little bigger) and that was done just fine. Don't know if they held the sealant gun outside through the opening or used angled nozzles but I'd just leave it to your fitters - they'll have dealt with all sorts I'm sure.
Edited by tux850 on Saturday 25th March 08:43
RC1807 said:
Interested to see how a window is sealed using a head, fat or otherwise.
I’d have thought using hands and arms would be simpler.
Would expect that it is the need to see the sealant entering the gaps reasonably neatly that needs a head, fat or thin, on the outside of the frame.I’d have thought using hands and arms would be simpler.
J6542 said:
Panamax said:
No, no, and no!
Construct the whole frame inside out, apart from the sill. Removes any need for dangling outside or faffing about on ladders. i.e. glaze it from the inside (after painting, of course).
You can’t seal it from the inside, you need to be outside to do that.Construct the whole frame inside out, apart from the sill. Removes any need for dangling outside or faffing about on ladders. i.e. glaze it from the inside (after painting, of course).

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