Since 1980, we have provided insulation and air sealing services, elegant glass solutions, shower enclosures, and custom closets to homebuilders and homeowners in Seattle and northwest Washington, including Greater Puget Sound. Your building and home improvement needs are of the utmost importance to us. Receive responsive, professional service and quality installation from our fully bonded, licensed and insured installers. The power of USI's national scope, rigorous training and customer service standards ensures you receive a positive experience and excellent results.. Receive the expertise in custom glass, mirrors, shower doors,bathroom enclosures and closetsto make any house a home,and increase energy efficiency with air sealing and insulation. Your premium quality installations last a lifetime,thanks to our dedicated,experienced team. Contact us for knowledgeable professionals you can trust in your home.