For over 20 years, 1st Choice Windows & Siding has been installing high-quality vinyl siding and custom window replacements since 1995. Dedicated to providing quality service, 1st Choice Windows and Siding is Denver?s go-to shop for all your exterior housing needs. When it comes to renovating your home, choose wisely. Our experts have been specializing in vinyl window installation for Denver residents for years. Get the job done right the first time with 1st Choice Windows & Siding.