FAQs by NSS Exteriors in Chicago, IL

We're open Monday through Friday 7am to 4pm. Our office is closed Saturday and Sunday.

You can find our corporate office at 4650 W 120th St., Alsip IL 60803. We recommend calling for an appointment if you wish to stop by.

NSS Exteriors offers a Limited Lifetime Warranty on residential skylight installations, and VELUX skylights also come with a warranty when installed by NSS Exteriors!

You can read about VELUX warranties here: https://www.nss-exteriors.com/resources#VELUXWarranty

Information is coming soon.

Check out https://www.energystar.gov/about/federal_tax_credits/windows_skylights