Knox County's seat on the Kokosing
Spray Foam Insulation in Mount Vernon, OH
More than a third of Mount Vernon's homes were built before 1940.
- Free on-site estimates across Richland County
- Written quote listing foam type, thickness and R-value for each space
- Roof leaks, damp sills and old wiring flagged before anything is covered
Historic Homes on the Kokosing
Spray foam insulation in Mount Vernon is mostly retrofit work in older houses. ACS data on Point2Homes shows 35.5% of the city's homes were built in 1939 or earlier, a higher share than Mansfield. Mount Vernon was platted in 1805 and named after George Washington's estate; it is the seat of Knox County, on the Kokosing River about 40 miles northeast of Columbus.
Flood history
In January 1959, Wikipedia records, a severe flood forced the evacuation of about 500 homes and caused $5 million in damage. Homes on lower ground near the river may have basements that have taken water; we check before insulating.
What older homes need
Historic homes in the East High Street area and around downtown often have tall walls with no insulation, attics with old fill and basements with stone or brick foundations. Dense-pack walls from inside or out, attic sealing and rim foam are the usual plan.
Owners and renters
About 55.1% of occupied homes are owner-occupied, and about 65.5% are detached houses.
Kenyon-area and downtown rentals
With close to 45% of Mount Vernon homes rented, landlords are a big share of our calls. Older rentals often have high heating bills and tenants who complain about cold bedrooms. Air sealing the attic and rim joist cuts those complaints quickly, and dense-pack walls can follow during a turnover when rooms are empty.
What to Know in Mount Vernon
- Pre-war homes. About 35.5% of Mount Vernon's homes were built in 1939 or earlier (ACS via Point2Homes).
- 1959 flood. A severe flood in January 1959 forced about 500 homes to be evacuated and caused $5 million in damage (Wikipedia).
- Housing. The 2020 census counted 7,662 housing units in Mount Vernon, 8.0% vacant (Wikipedia).

Mount Vernon Questions
Do you work in Knox County?
Yes, in Mount Vernon and nearby areas.
Can you insulate a historic home without changing the outside?
Yes. We can dense-pack from inside and focus on the attic and basement.
Is Knox County in the same code zone?
Yes. Knox County is in Ohio's Zone 5A.
How far do you travel into Knox County?
We serve Mount Vernon and nearby areas. Call with your address and we will confirm.
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