Best Insulation Contractors in Littleton, CO
24 contractors listed · 12 in Littleton · 4 open 24/7 · 14 open weekends · 22 rated 4.5+
Data verified October 27, 2026
Advocate Construction
Lifetime Construction
Gccs Roofing
Colorado Preferred Roofing
Ecoshield Exteriors
The 24 contractors listed for Littleton, CO insulate attics, walls, crawl spaces and rim joists. Details under each one about materials, hours and the services advertised are copied from the company's own site; star ratings and comments come from public reviews.

Area overview: Littleton, CO
12 of the 24 contractors we list are based in Littleton; the other 12 serve Littleton from towns including Centennial (8 mi), Aurora (17 mi) and Lakewood (9 mi). 23 of the contractors on this page have a rating, from 4.4 to 5.0 across 2,002 reviews; 17 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (89%), responsiveness (88%) and quality (87%). 4 are open around the clock; 14 are open on Saturdays and 7 on Sundays. The services the contractors on this page list most often on their websites are commercial roofing (4), residential roofing (4), multi-family roofing (2), painting (2) and roofing (2). 4 show a license on their websites; 2 list staff certifications (BPI and GAF) and 13 have a BBB rating of A or A+. Domain records put 18 websites of the contractors on this page at ten or more years old; the oldest dates from 1999. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
Will anyone assess the house at no charge?
No charge assessments are advertised by 10 of the 24 contractors on this page. A free look usually means someone measures the attic and writes a proposal. A paid energy audit with a blower door and a camera is a different product and tells you far more about where your house is leaking.