We have been looking at Internorm and Velfac windows as part of a wider house refurb, however we understand that we could achieve similar levels of energy efficiency with an alternative and potentially cheaper product. Does anybody have any experience of discouting an Internorm/Velfac type product and using an alternative? What's the next best, less expensive product available? Were you happy with the results?
Black and Milk | Interior Design | London
Isla Cherry
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