Manufacturers of double glazing

[Tristar]

It is very difficult to glean accurate information about the u-values of different makes of double glazing. I am in the process of replacing my 35 year old windows with the much better modern ones. I have got quotes from various firms, all very similar in price, but offering different manufacturer's windows.
Kommerling O70 Gold, Deceuninck, 2800and Duraflex are the 3 offered. Can any experts offer recommendations of the 3? I appreciate that the efficiency also depends on how well they are fitted, using the correct insulation foam etc., but I would like to choose the best quality frames.

 

[DHFrames]

You need to find out the 'Overall U Value' to determine which company supply the most effiecient product. Although everyone supplies A Rated windows the actual U Value will be different. It's down the the company to supply this info.
Personally only used Duraflex, not bad but that was many years ago, all products have evolved.
Don't forget arguably the UKs big 2, Veka and Rehau!! Add a good installation team to one of those you can't go wrong.
All in the fitting

 

[Gazman16]

To be honest unless it is a conservatory or you have vast amounts of glazing in your house it will make almost no difference to anything except the cost of the windows. I found this on one of the major glass manufacturers websites a few years back:

A,B or C rated windows?
What is the average saving to householder between A, B & C rated windows in terms of energy and cost savings?
A, B and C rated windows are all much more energy efficient than standard windows. That said, there are differences in performance of energy efficient windows with A B and C ratings;
• Changing existing single-glazed, timber windows to Band C windows in a semi detached, gas fuelled house would be expected to save £4350 in heating costs and 11 tonnes CO2 over 20 years.
• If the new windows are instead B-rated then the savings increase to £4650 and 11.5 tonnes CO2 .
• And, if the new windows are instead A-rated then the savings increase to nearly £5000 and over 12 tonnes CO2 .
The above shows that achievement of the level C displays significant savings over existing windows with higher ratings of B and A delivering further smaller incremental savings above C.


Using the above example fitting A rated rather than B rated would save about £350 on heating bills over 20 years which is a £17.50 saving per year but an A rated window can be upto £20 or more each extra.

It is fairly widely believed that any special gas added to the units will have escaped within 7 years so you will probably never get that extra money back.

I would say it is far better to have a window that you like the appearance of and to have them fitted by the best fitter possible.
Personally I like Eurocell and Liniar with the Ovlo moulding, They just look better in my opinion.[/u][/b]

 

[Tristar]

Thanks very much to all who have posted helpful comments. I have ordered triple glazing, with frames by Rehau. It is only 8% dearer than A class double glazing. To be fitted next month.

 

[Gazman16]

So youve gone from considering Kommerling O70 Gold, Deceuninck, 2800 and Duraflex to having ordered Rehau in two hours odd?

 

[Tristar]

So youve gone from considering Kommerling O70 Gold, Deceuninck, 2800 and Duraflex to having ordered Rehau in two hours odd?

Make it two months!

 

[DHFrames]

Good choice, Rehau won't disappoint. Lets just hope you get a decent installation team now

 

[Gazman16]

Oops lol damb spammers dragging up old posts.

 

[Tristar]

Good choice, Rehau won't disappoint. Lets just hope you get a decent installation team now

I've chosen the same small firm that fitted the last WERU windows 30 odd years ago. They did a good job then.