Double Glazing Quality

HJandR

Sorry if I get this wrong, I am new to posting and hoping this is the right place.

We are currently looking to double glaze a full house, and have a reasonable quote, but are keen to make sure we get a quality product. We have experience of Rehau windows previously and liked the quality, but have been offered a choice of Rehau, Deceuninck or Kommerling frames - all for the same price. Can anybody give us an indication of how these products compare in terms of quality levels - are they reasonable names - who are the market leaders in double glazing ?

Any general advice about how to choose between the various manufacturers would be appreciated also, what makes a good window frame ?

Thanks

thebaldwindowfitter

Kommerling we consider to be the best profile on th market at the moment followed by rehau

HJandR

Thanks for the info, can you tell me why the Kommerling is better than the Rehau - is there a significant difference ? and where does the Deceuninck stand in the market. I have come across a couple of posts about the Deceuninck here where there are issues about quality - to do with bolted frames and joints being inadequate, is this an isolated experience or is the Deceuninck a substantially different product and lower quality ?

thebaldwindowfitter

Kommerling and rehau have been in the upvc market for 60 years ish .we moved from rehau after 11 years last year over quality issues with the product and after sales service from our suppliers.We took our time to find a new product on on the market kommerling came out on top .deciunik we had problems with welds cracking and at the time was a blue white and was hard to match with other upvc products ie we fit swish replacement roofline products and the colours did not match