Replacing Wooden sash windows

donut_breasts

Hi, My partner and I are buying a 1900s victorian house and the survey has pulled up some issues with the wooden single pane sash windows.

I need help with a guide price for replacing (worst scenario) the following wooden sash windows:
1 x (1.25m x 0.75m)
3 x (1.25m x 1m)
2 x (1.25m x 0.3m)
2 x (1.25m x 0.5m)

Can anyone tell me how the price will vary for single and double glazed?
I don't really want to go UPVC as the windows will lose their character.

Also if anyone can recommend someone in the Lewisham (south east london) area that would be a great help.

Thanks everyone!

Hyphae

The Wooden Window Company in Andover, Hants are very good and can give you an indication on pricing- I have used them before and never had an issue with their windows (I looked around and they were very reasonable). I was typically quoted (for a pair of double glazed sashes) around £500-£600 per sash window. Complete replacement box sash windows (supplied & fitted) around £1100- £1300 per sash window.

hcb42

I did mine in 2006 . Bill was about £11K.

We did 12 windows in total. Eight were about 4' by say 6-7' in size, two were smaller ones which would have been in the old pantry. The other two were med sized. THey were all refurbished, painted, with some special treatment and fitted with screw lock type things and double glazed. the job took several weeks - one guy

Definitely the right thing to do. PVC is all wrong on old houses. Ours look great.

diable

Check out Ventrolla as a friend has used them when renovation houses in conversation areas, you may be able to renovate the windows instead of replacing them.

DadDee

Hi

I have a similar query. We have a 1900s Victorian house with an assortment of wooden sash and casement windows.

a) a couple of sashes are rotten - we have been quoted £1200 to replace these with similar wooden double glazed units. This is a no brainer decision, though one of the companies prefers fixing the existing frame rather than replacing the original frames.
b) The rest of the sashes and the casement windows just need an overhaul and have been quoted the following

-> £250 to draught proof and full service (rebalancing, etc.) each sash
-> £250 + £450 to draught proof, full service and double glaze each sash

The prices for casement windows is slightly lower than the slashes.


Just wanted people's opinions about the merits of draught proofing only vs draught proofing + double glazing. Also is it straight forward to fit double glazing to existing wooden sashes? What questions should I be asking the suppliers?

mollymunchkin

I'd say look at using Ventrolla as well. They can refurbish windows & install a draught proofing system.

theGrinch

I got 8 sash windows and boxes done in north london last year by a fensa registered company. I couldnt be happier with the quality or price (I contacted over 100 companies over 3 years!)

It was lower that everything quoted thus far (I did drive a good deal).

PM me if interested.

benood

We had our sashes refurbed a few years ago by someone based in Reading I think - if you search my posts from a while back I'm sure I gave the details - he was very reasonable and did a good job.

theGrinch

donut_breasts wrote: »

Hi, My partner and I are buying a 1900s victorian house and the survey has pulled up some issues with the wooden single pane sash windows.

I need help with a guide price for replacing (worst scenario) the following wooden sash windows:
1 x (1.25m x 0.75m)
3 x (1.25m x 1m)
2 x (1.25m x 0.3m)
2 x (1.25m x 0.5m)

Can anyone tell me how the price will vary for single and double glazed?
I don't really want to go UPVC as the windows will lose their character.

Also if anyone can recommend someone in the Lewisham (south east london) area that would be a great help.

Thanks everyone!

glass is a big element of cost so it will add quite a bit, but its definitely worth it. A previous owner had replaced all the original sashes with UPVC and we got them all replaced with reproduction windows that look just like the originals.

We went for double glazed sashes with triple draught proofing. No problems over the winter or with noise.

Ben84

DadDee wrote: »

Hi

I have a similar query. We have a 1900s Victorian house with an assortment of wooden sash and casement windows.

a) a couple of sashes are rotten - we have been quoted £1200 to replace these with similar wooden double glazed units. This is a no brainer decision, though one of the companies prefers fixing the existing frame rather than replacing the original frames.
b) The rest of the sashes and the casement windows just need an overhaul and have been quoted the following

-> £250 to draught proof and full service (rebalancing, etc.) each sash
-> £250 + £450 to draught proof, full service and double glaze each sash

The prices for casement windows is slightly lower than the slashes.


Just wanted people's opinions about the merits of draught proofing only vs draught proofing + double glazing. Also is it straight forward to fit double glazing to existing wooden sashes? What questions should I be asking the suppliers?

£450 per window for replacing the glass with double glazing doesn't sound economical. The payback period for that in energy savings is going to be a very long time, probably longer than the sealed units will last. There are benefits in sound reduction and reduced cold spots in the rooms however that might make it worth doing. However, these can also be obtained with secondary glazing which may be cheaper and is worth comparing the cost against. Secondary glazing also doesn't suffer the problems double glazing sealed units tend to with failing and filling up with water that requires the whole glass unit to be replaced, which is why we went for this rather than double glazed windows. Replacing the glass in sash windows does also often require rebalancing the lead weights each time too, so replacing sealed units in these windows is extra work and cost you might want to avoid.

You should ask about the maximum thickness sealed units the existing window frames can accept as this does affect their thermal and sound performance a lot. Chances are that it's one of the thinner less effective ones.

smitche6

Try WindowRepublic .Com

They where excellent and did exactly what they said they said they were going to do, and they have a price promise.

They are based in London but wil go any where

their number is 0800 690 6513