Wall Insulation in Kansas City
Stop Losing Energy Through Your Walls
Walls are the largest surface area of your home — and in most Kansas City houses built before the 1990s, they’re badly under-insulated or not insulated at all. Up to 35% of a home’s heat loss can happen through exterior walls, which is why drafty rooms, cold exterior walls in winter, and uneven temperatures between rooms are so common in older KC neighborhoods.
Henges Insulation has insulated Kansas City walls since 1932. We offer every major wall insulation method — from classic fiberglass batts to dense-pack retrofits that don’t require tearing out drywall — so we can recommend what’s right for your home instead of forcing one product onto every job. If you live in an older home, see our guide to the best insulation for older Kansas City homes.
Signs Your Walls Are Under-Insulated
- Exterior walls feel cold to the touch in winter or warm in summer
- Rooms on the same floor vary noticeably in temperature
- Heating and cooling bills keep climbing despite a working HVAC system
- You hear street noise clearly through closed windows and walls
- Your home was built before 1990 and the walls have never been upgraded
Wall Insulation Methods We Install
The right method depends mainly on one question: are the walls open (new construction or renovation) or closed (existing finished walls)?
For existing, finished walls (no demolition needed)
- Drill and Fill — we drill small, discreet holes, inject dense-pack insulation into each wall cavity, and patch the holes. The go-to retrofit for older KC homes.
For open walls (new construction or remodels)
- Batt Wall Insulation — pre-cut fiberglass batts between studs; the cost-effective standard.
- BIBS® (Blow-In-Blanket System) — fiberglass blown behind netting for complete cavity fill and higher R-values; a builder favorite.
- Wall Spray Cellulose — damp-spray cellulose that fills every gap and adds sound control with recycled material.
- Spider Fiberglass — the JM Spider system fills gaps and voids that batts miss.
- Spray Foam — maximum R-value per inch plus air sealing and moisture control in one step.
Comparing Your Options
| Method | Wall type | R-value (2×4 wall) | Best for |
|---|---|---|---|
| Drill & Fill (dense-pack) | Existing/closed | R-13 to R-15 | Retrofitting older homes |
| Fiberglass batts | Open | R-13 to R-15 | Budget-friendly new construction |
| BIBS® | Open | R-15 | Complete fill, builder spec |
| Wall spray cellulose | Open | R-13 to R-14 | Eco-friendly + sound control |
| Spray foam (closed-cell) | Open | R-21+ | Max performance, moisture-prone walls |
For Kansas City’s climate (IECC Zone 4), aim for at least R-13 in existing 2×4 walls — and R-20 or better in new construction to meet current energy code.
Why Choose Henges for Wall Insulation?
Every method under one roof
We install every major method, so our recommendation is based on your walls, not our inventory.
90+ years of local experience
Three generations of Kansas City homes, from 1920s bungalows in Brookside to new builds in Olathe.
Clean, fast retrofits
Dense-pack retrofits with minimal disruption: most drill-and-fill jobs are done in a day, with holes patched before we leave.
Performance-first approach
Pair wall insulation with an energy audit to find and fix your home's biggest losses first.
FREQUENTLY ASKED QUESTIONS
Yes. Our drill-and-fill method injects dense-pack insulation through small holes that we patch afterward — no demolition, and most homes are finished in a single day.
Cost depends on the method, wall area, and whether the walls are open or closed. Dense-pack retrofits are priced per square foot of wall; spray foam costs more but performs best. Request a free estimate for exact pricing, or see our 2026 Kansas City insulation cost guide.
Kansas City sits in climate zone 4. Existing 2×4 walls should be brought to R-13–R-15; new construction should target R-20 or higher to meet the 2021 energy code.
Significantly. Dense-pack cellulose and fiberglass both dampen outside noise, and we also install dedicated soundproofing insulation for interior walls, home offices, and media rooms.
Usually for sound control rather than energy savings — bedrooms, bathrooms, offices, and laundry rooms are the most common requests.
Get a Free Wall Insulation Estimate
Serving the entire Kansas City metro from Olathe, KS — including