East end of Lavon Lake on US 380
Spray Foam Insulation in Farmersville, TX
Older town homes, new country houses and steel shops.
- Free estimates at your home, not over the phone
- Quotes that list foam type, depth and R-value for each area
- Open-cell, closed-cell and blown-in, matched to the spot

Insulating in Farmersville
Spray Foam Insulation in Farmersville covers a mix you do not find in the suburbs. Farmersville is an old farm town in eastern Collin County; in the 1930s it was called the Onion Capital of North Texas and shipped more than 1,000 carloads a year. Its older streets have houses that may sit on raised floors with little insulation, while new homes and shops go up on acreage around it.
Building in the country
Much of the land around Farmersville is outside city limits, where Collin County rules apply. The county requires one usable acre for a septic system on lots divided in 2008 or later, or 1.5 acres with one usable acre if the lot has a water well. New homes in unincorporated Collin County need third-party inspections at foundation, framing and mechanical, and final. If you are building out here, we time insulation so it is ready for the framing and mechanical stage.
Lake on the west side
The northern part of Lavon Lake reaches Farmersville's western city limits, north and south of US 380. The lake keeps humidity up in summer, which is one more reason steel shops and barns here benefit from closed-cell foam that stops condensation on cold metal.
Older houses in town
For older homes, the attic is still the first stop: seal the ceiling and add depth. If the house sits on pier-and-beam, closed-cell foam under the floor cuts drafts and keeps winter floors warmer.
Pricing a country job
For a new house on acreage, foam is priced as new construction, which Fixr lists at $2.75 to $6.50 per square foot nationally. Steel shops and barns are priced by wall and roof area at the closed-cell thickness that suits their use, with HomeGuide listing closed-cell at $3.00 to $5.00 per square foot installed. Older in-town homes usually start with an attic job. Travel is not a reason to cut corners, and each building gets its own line on the quote.
Call (469) 402-9698 for a free estimate in Farmersville.
Farmersville Facts
- Onion history. In the 1930s Farmersville was the Onion Capital of North Texas, shipping more than 1,000 carloads a year.
- Lavon Lake. The northern part of Lavon Lake lies at Farmersville's western city limits, north and south of US 380.
- County lot rules. Collin County requires 1 usable acre for septic on lots divided in 2008 or later, or 1.5 acres (1 usable) with a water well.
- County inspections. New homes in unincorporated Collin County need third-party inspections at foundation, framing/mechanical and final.

Farmersville Questions
We are building a house on acreage near Farmersville. When should insulation happen?
After framing and rough-in, before drywall. In unincorporated Collin County that lines up with the framing and mechanical inspection stage.
Our older house has cold floors. Can you help?
If it is on pier-and-beam, closed-cell foam under the floor seals drafts and adds insulation without touching the finished floor.
Why does my barn roof drip?
Condensation on cold steel. Closed-cell foam sprayed on the metal stops it.
Do you come out to properties well outside town?
Yes. We work across eastern Collin County, including acreage outside Farmersville.
Free Estimates in Farmersville, TX
Free estimates in Farmersville and the countryside around it.
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