Are these any good?

[imamartian]

Does anyone have any experience of these?

http://www.doorwarehouse.co.uk/showdoor2.php?args=EVUFPXD070~(X)~(.)~(.)~(070)~(P)~(.)~(.)

or

http://www.wickes.co.uk/page/trifold-door?WT.ac=SP10031

Are they likely to be as well insulated as uPVC double glazing?

Thanks

 

[freddiemercurystwin]

It won't make much difference as there's so much glass area there. In any case check with the supplier it complies with building regs and you'll be ok.