Is $1,800 to install spray foam insulation in ceiling of room extension a fair price?
Project Details
My trailer has an extension that had no insulation in the ceiling when I bought it. The recommended R-level for ceilings in Delaware is R30, but the cavity in the extension is not deep enough to fit R30 insulation. I'm concerned about compressing insulation, as I've read it removes effectiveness. I'm looking for advice on whether compressing about 4 inches of R-30 fiberglass insulation with drywall would be okay without losing effectiveness, or if extending the joists is an option. I really want to make the room as heat/cool/energy efficient as possible.
Quote Details
This quote is for installing spray foam insulation in the ceiling of a 228 sq ft room extension. - Scope: Ceiling insulation only - Area: 228 sq ft room extension - Existing insulation: Floor and walls are already insulated
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More Details
Category
Insulation
Price
$1,800
Quote Date
November 27, 2025
Location
Delaware
Home Size
228 sq ft
Insulation Type
Spray foam
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