Foam we spray
Profoam ProSeal Closed-Cell Spray Foam
ProSeal is a closed-cell spray foam from PROFOAM Corporation, our supplier. We use it where closed-cell belongs: steel buildings, rim joists, crawl spaces and anywhere water contact is possible. Every number here comes from the manufacturer's data sheet.
In short
Closed-cell, 2.0 lb
A medium-density, two-part closed-cell system.
R-7.1 at 1 inch
R-7.1 at 1 inch (ASTM C518), per the data sheet.
Class II vapor retarder
The data sheet says it qualifies at a minimum of 1 inch.
PROFOAM Corporation of Rutledge, Georgia, makes ProSeal. The data sheet describes it as a medium-density, two-part closed-cell spray polyurethane foam insulation system.
Closed-cell foam is what we use on steel buildings, rim joists, crawl spaces and anywhere water contact is possible. Read more about closed-cell spray foam, or see our main closed-cell foam, Accufoam CC-HFO.
From the data sheet
| Property | Value on the data sheet | Test method |
|---|---|---|
| R-value at 1 inch | 7.1 | ASTM C518 |
| Density (nominal) | 2.0 lb/ft³ | ASTM D1622 |
| Water vapor transmission | 0.86 perm at 1 inch | ASTM E96 |
| Air permeance at 75 Pa | less than 0.002 L/s·m² | ASTM E2178 |
| Closed-cell content | more than 97% | ASTM D2856 |
| Water absorption | less than 1% by volume | ASTM D2842 |
| Fungi resistance | Pass, no growth | ASTM C1338 |
| Surface burning | Flame spread under 25, smoke developed under 450 (Class 1) | ASTM E84 |
| Maximum pass thickness | 4 inches (3.5 inches per pass for two passes) | Data sheet |
| Re-entry, trades | 1 hour at 10 air changes per hour | ASTM D8445 |
| Re-occupancy, homeowners | 24 hours at 10 air changes per hour | ASTM D8445 |
Source: PROFOAM ProSeal Technical Data Sheet, read Sep 28, 2026. The data sheet lists ASTM C1029 Type II, an IAPMO Uniform Evaluation Service report and GREENGUARD Gold certification; the report number on the data sheet and on the supplier's product page differ, so we link to the documents rather than quote a number.
Documents
Questions
Common questions
The data sheet lists R-7.1 at 1 inch, tested to ASTM C518. Your scope states the applied depth.
The data sheet says it qualifies as a Class II vapor retarder when installed at a minimum thickness of 1 inch. A vapor retarder slows water vapor; it is not a Class I vapor barrier.
Next step
Ask which foam we would use in your building
The product, the applied depth and the price, in writing, before anything is ordered. Free to book.