Lincoln homes and insulation
Census estimates put the median year built for Lincoln homes at 1967, and 71.3% are single-family detached. Mid-century houses like these commonly have attic insulation below current levels and leaky rim joists, the two areas where spray foam pays off most in comfort.
About 43.1% of Lincoln homes are renter-occupied, so if you rent, check with your landlord before requesting an estimate.
Common projects
- Attic air sealing and insulation
- Rim joists and basement walls
- Crawlspaces
- Outbuildings and shops in rural Logan County
What to ask any installer
- Open-cell or closed-cell foam, and how many inches in each area
- The R-value that thickness gives you, in writing
- What prep, ventilation and re-occupancy time the job needs
- Whether they are a registered Ameren Illinois Program Ally, if you want that discount
How the referral works
Tell us about the job by form or phone. We pass it to one independent installer who serves Lincoln, and they contact you to set up an estimate. We are a referral service, not a contractor, and the referral is free with no obligation.
Sources
Checked October 2026. We link the public source for every figure on this page.
- U.S. Census Bureau ACS 2020–2024 5-year estimates for Lincoln, IL (via USAStateStats) — median year built, housing type, owner-occupancy
- City of Lincoln, Local Utilities — electric and gas provider
- Ameren Illinois, Single-family homeowner upgrades — Program Ally insulation discounts
- IRS, Energy Efficient Home Improvement Credit — 25C status for 2026