Sash draught-proofing VS new upvc??

[ben99]

I've got some very noisy, daughty sash windows with a little bit of rot. I have recieved quotes to repair and draught-proof these, and it comes in at the same price as new uPVC double-glazed windows.

My question is how effective is sash window draught-proofing, from a sound reduction perspective? And any ideas how this compares with the sound reduction from double glazing?

Thanks.[/u]

 

[masona]

I've got some very noisy, daughty sash windows with a little bit of rot. I have recieved quotes to repair and draught-proof these, and it comes in at the same price as new uPVC double-glazed windows.

Forget the upvc, your timber windows will outlast the upvc with the correct treatments, in some cases upvc windows can devalue your house

 

[JohnD]

if the repairs cost as many thousands as fitting your house with ugly plastic, then either they are very high-quality repairs, or they are overpriced.

the other difference is that original sash windows will increase the value of your house, and plastic will devalue it. Especially if you get a plastic door too.

there are some specialist wooden sash-window companies about, get a competitive quote to see.

post some pics if you can.

edit: too slow

 

[ben99]

Thanks for that.
Purely on a sound reduction perspective, how effective is draught-proofing for sash windows? (I imagine draft-proof strips and sealing small gaps is what I am looking at)

Cheers

 

[JohnD]

you can get a "furry" strip that enables the sashes to slide.

you have three problems
1) because they slide, they always have gaps (but the furry strip is a good seal)
2) the weight of glass is not high, and this is one of the ways of stopping noise
3) there is only one layer.

The very best soundproofing is with secondary glazing in a different (preferably heavier) glass, with an airgap of several inches. This is more efective than double glazing, and cheaper. If you use net curtains it is almost invisible.

 

[masona]

I have done a 2nd secondary glazing on a 10' high sash windows in Abbey Road, London!

I've made sure the 2nd glazing opening was in line with the sliding sash window to match so it was not noticeable