Spray Foam Insulation in San Leon, TX

Spray foam insulation in San Leon must work with flood rules. Wikipedia places San Leon at about 3 feet of elevation, and revised FEMA flood maps that took effect August 15, 2019 put the vast majority of the community in a high-risk flood category. Hurricane Ike caused extensive damage there on September 13, 2008.

New homes on empty lots

As of July 2019, San Leon had 2,632 single-family homes, 14 multi-family buildings and 2,116 vacant lots, and many homes are second homes used in summer. Population grew 23.4%, from 4,970 in 2010 to 6,135 in 2020. New raised homes are a good time to spec closed-cell foam under the floor and a sealed attic or foamed roof deck.

Owners

Census QuickFacts lists an 87.8% owner-occupied rate and a $183,100 median owner-occupied value, with 85.5% in the same house a year earlier.

Code baseline

OpenEI places Galveston County in Climate Zone 2A. The Texas code summary lists R-38 for ceilings and R-13 for wood-frame walls, and the Department of Energy suggests R-13 for an uninsulated floor in Zone 2.

Older bay houses

Older San Leon homes that were not raised often sit on slabs or low piers. Attic sealing and blown insulation, plus foam under any pier-and-beam floor, are the usual upgrades. After storms we check attics for wet insulation from roof damage.

Salt air

With the bay close by, salt air reaches framing hardware. We check for corrosion under raised floors before spraying foam.

Water-resistant choices

Below base flood elevation, use flood-resistant materials. Closed-cell foam does not absorb water and is the usual choice under raised floors. Get a free estimate