Spray Foam Insulation in Isle of Hope, GA

Spray foam insulation on Isle of Hope deals with old houses and high water. Isle of Hope is a small island south of Savannah, about 2.3 square miles, that is surrounded by water at high tide and sits around 13 feet above sea level. It had 2,357 residents in 2020.

Summer homes turned year-round

Isle of Hope's history goes back to 1733, when Noble Jones was granted the land that became Wormsloe. Savannah families fled there during yellow fever epidemics, and it grew into a summer retreat before becoming a year-round community in the early 20th century. Several antebellum homes survive, including an 1820 caretaker's cottage. Houses built for summer use were not made to be cooled, and many still have little insulation in floors and walls.

Raised and pier homes

Many island homes sit on piers or raised foundations. Insulating under the floor with closed-cell foam seals out damp air and wind and is rated acceptable by FEMA for flood-prone areas. Old batts that have fallen come out first.

Respecting older houses

In historic homes, we work from the attic and from below, without touching original plaster or trim. Walls get foam only when they are opened during renovation.

Attics

Sealing around old chimneys, chases and top plates, then adding insulation, cuts heat gain from the roof. We check for old wiring before covering anything and flag it for an electrician.

Climate

Chatham County is in Climate Zone 2A, where Georgia's code calls for R-38 ceilings in new homes, and the Department of Energy suggests R-13 for floors over unconditioned space. Get a free estimate

Order of work

For most Isle of Hope homes we suggest this order: dry out and clear under the house, seal and insulate the floor, then seal the attic and add insulation. Walls wait for a renovation. This order tackles the damp air and drafts first and keeps disruption low.

Price guide

HomeGuide lists closed-cell spray foam at about $3.00 to $5.00 per square foot, and attic air sealing at about $350 to $3,000. Historic homes can take more prep time. Once we have seen the house, the written estimate is what you pay.