Double Glazing minefield

newbiejim

newbiejim

newbiejim

Soldato
Joined
22 Jun 2004
Posts
2,693
Location
South Scotland
In line with my quest for a not so cold winter next year I have resolved to have better heating and to improve/replace my upstairs windows, they are currently old metal framed albeit Everest brand.

My initial research seems to suggest I should go for decent brand extrusions such as Rehau or Veka, also best to get 70mm type?, so now the fun starts, how much should I reasonably expect to pay for three upstairs (one toilet) windows of this type dimensions roughly are:
  • Window 1 (toilet) 1.25m x 1m
  • Window 2 (room) 1.25m x 1.2m
  • Window 3 (room) 2m x 1.2m

I realise all installs will vary etc but should this be possible for £1200 supply and fit?
 
Profile 22 is a good product, the extrusion won't make a difference to the temps the more important parts are the glass and the seals, glass will be gas filled low e double glazed the difference in u value will be the distance between the panes and if the frame of the dgu is thermally broken.

I've got triple glazed composite windows and they still don't beat a good set of correctly sized curtains tucked behind the radiators
 
What you need to look at really is the best you can get for your money. Building Standards on new homes require windows to have a U-Value of 1.8W/m2K but some of our developers are saying not many suppliers make them anymore so its becoming cheaper to get lower U-value windows (the key is the lower the U-value the less the heat will escape depending of course on how drafty or otherwise your house is :p)
 
maccapacca said:
Profile 22 is a good product, the extrusion won't make a difference to the temps the more important parts are the glass and the seals, glass will be gas filled low e double glazed the difference in u value will be the distance between the panes and if the frame of the dgu is thermally broken.

I've got triple glazed composite windows and they still don't beat a good set of correctly sized curtains tucked behind the radiators
Click to expand...

yeah I bet, I`m hoping tho as my existing ones are SO old there should be a noticeable difference?, seal is gone on one and they are metal and get condensation on them too. U value on ones I am looking at is 1.4, it seems a tiresome task to have to deal with dreaded double glazing salesmen lol, so £1200 do-able you think?
 
There are two U values one is centre of pane and the other is for the whole DGU don't let them fob you off with a centre of pane value.

For reference most of our new builds are 1.1 whole window, we use Rationel mostly for standard DG composite windows.
 
Derek W said:
What you need to look at really is the best you can get for your money. Building Standards on new homes require windows to have a U-Value of 1.8W/m2K but some of our developers are saying not many suppliers make them anymore so its becoming cheaper to get lower U-value windows (the key is the lower the U-value the less the heat will escape depending of course on how drafty or otherwise your house is :p)
Click to expand...

I work for LA so been askin the building standards lot lol

maccapacca said:
There are two U values one is centre of pane and the other is for the whole DGU don't let them fob you off with a centre of pane value.

For reference most of our new builds are 1.1 whole window, we use Rationel mostly for standard DG composite windows.
Click to expand...

Thanks m8, didn't know that, any thoughts on the 60mm or 70mm frame widths?, read somewhere 70mm significantly better?
 
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