We are trusted suppliers for many high performance builds.
We can also provide the lowest-cost method of meeting H1 compliance – by upgrading your windows and often not much else.
Our windows and doors are also stunningly beautiful, available in a range of configurations, and with impressive sizes.
STÄRKE Ambiance Inline uPVC window system is the perfect compliment to your FORMANCE SIPS build - the two products are a match made in heaven, with the window performance a perfect, air-tight and seamless match.
