What is the reason for this reaction?...........
Pvc and aluminium windows can suffer where the external temp. meets the internal in the frame, whereas solid timber is a good natural insulant. ..............
Imperial u-value? Can you substanciate this.
Marvin are a respected manufacturer, with a proven track record. ( I've no connection to Marvin)
Double glazed timber windows will have a certain u-value and a certain BER rating. IMO this will not make a huge difference to your actual BER result (unless you compare it to single glazed iron windows!)
Pvc and aluminium windows can suffer where the external temp. meets the internal in the frame, whereas solid timber is a good natural insulant.
Pilkington are a major glass manufacturer, supplying most window manufacturers. Most double glazed windows have the option of Argon gas - this is well worth specifying in your windows.
Do your home work, cut out the speel and try to compare like with like when comparing quotes.
Windows do not / can not have a BER rating.
A Building Energy Rating is associated with a Building only.
Solid timber is not a natural insulant. It is not an insulant.
Timber conducts heat at a slower rate than other materials such as metals or masonry, but it does not insulate.
DBK100
http://www.mesh.ie
This is very interesting and has answered questions I didnt even know enough about to ask! I wonder if someone could guide me - our plans have large south facing windows, with the high insulation standards these days I am sure that there is a danger of the rooms overheating. Do standard windows moniter the heat coming through or is there something else that one should ensure is present in the windows to prevent over heating? In our plans we have a balcony which will over hang one part of the windows - this could help but I don't want to loose too much light. thank you. Brigid.
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