Slade Glass Co. Share: Glass Slade Glass Co. Visit Website Request Info 504 5th Ave. Longmont, CO 80501 303-776-3400 303-651-6253 (fax) www.sladeglass.com About Map About Since 1961, residential and commercial glass, window repair, hardware, shower enclosures, mirrors and storefront. What's Nearby? Distance: 5 10 15 20 25 50 mi.