Franklin County seat near Lake Cypress Springs
Spray Foam Insulation in Mount Vernon, TX
Historic homes in town and lake houses a short drive away, insulated without losing what makes them special.
- Free on-site estimates
- Foam type, inches and R-value listed for every area
- Leaks, damp wood and duct problems pointed out before we insulate

Old Houses and Lake Houses in Franklin County
Spray Foam Insulation in Mount Vernon means working on some of the oldest houses in the area. Wikipedia notes that more than 50 homes built before World War I still stand around town, marked with signs naming the original owners and the year built. The town site was laid out in 1849, and Mount Vernon became the Franklin County seat after the county was carved out of Titus County in 1875. The 2020 census counted 2,491 residents.
Insulating houses built before 1918
Houses that old were built with balloon framing, plank walls or tall stud bays, and almost always with no insulation in the walls. Many sit on piers. The usual approach is gentle: seal and insulate the attic first, insulate under the floor with closed-cell foam where the crawl space allows, and only then think about walls. Dense-pack cellulose can fill closed walls through small holes, but in a historic house we look carefully at the siding and trim before drilling anything. Old wiring is a common stop sign, and we will point it out before covering it.
Lake Cypress Springs
Franklin County is home to Lake Cypress Springs, a spring-fed lake impounded in 1970 that covers about 3,400 acres. The houses around it include year-round homes and weekend places, many on piers or slopes with crawl spaces open to the air off the water. Closed-cell foam under the floor and a sealed, insulated attic make those houses easier to cool and keep floors from going cold in winter.
Farms, peaches and oil
The county's economy grew on corn and cotton, then over 500,000 peach trees in the 1920s, and later oil after a 1936 discovery in the north part of the county. That leaves a mix of farmhouses, barns and steel buildings across the countryside, many of which need insulation to be usable in summer.
Call (903) 689-4138 to set up a free visit in Mount Vernon or around the lake.
Mount Vernon Facts That Shape the Work
- Pre-WWI homes. More than 50 homes built before World War I still stand around Mount Vernon, marked with the original owners and year built (Wikipedia).
- County seat since 1875. Mount Vernon was laid out in 1849 and elected Franklin County seat when the county was created in 1875.
- Lake Cypress Springs. The spring-fed lake was impounded in 1970 and covers about 3,400 acres, surrounded by 869 acres of public parks.
- Climate Zone 3A. Franklin County is listed in IECC Climate Zone 3A (OpenEI).

Mount Vernon Questions
Can you insulate a historic house without damaging it?
Yes. We start with the attic and floor, which do not touch the finishes, and look closely at siding and trim before any wall work.
Do you work on lake houses at Cypress Springs?
Yes. Raised floors, attics and detached garages and boathouses at the lake are all common jobs.
Is old knob-and-tube wiring a problem?
It should be checked by an electrician before it is buried in insulation. We point it out if we see it.
Free Estimates in Mount Vernon, TX
Free estimates in Mount Vernon and around Lake Cypress Springs.
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