Spray polyurethane foam insulation rough-in inspection checklist

Substrate clean, dry and sound

Framing and sheathing free of dust, oil, frost and standing moisture, no wet spots where the foam would fail to adhere.

Ambient and substrate temperature and dew point within range

Air and surface temperature read and compared to the product's published window, dew point checked so the substrate isn't below it.

Substrate moisture content read with a meter

Wood framing, sheathing or masonry read with a moisture meter at several spots per area and compared to the foam manufacturer's maximum, readings noted by area.

Drum labels match the approved foam submittal

A-side and B-side drums carry the product named in the approved submittal, open-cell or closed-cell as specified, with lot numbers and shelf-life dates legible and current.

Drums conditioned to the manufacturer's temperature

Drum temperature read before pumping and inside the range the manufacturer lists, no drums left in an unheated trailer overnight and pumped cold.

Rig pressures and hose heat set to the product data sheet

Proportioner display in the rig shows A and B pressures balanced and preheater and hose temperatures at the values the manufacturer's data sheet gives.

Test shot sprayed and checked before the first bay

Test shot on scrap board shows even color, fine cell structure and normal rise and tack-free time; soft, brittle or discolored foam means the rig is adjusted first.

Masking and protection in place

Windows, electrical panels, finished surfaces and equipment masked or covered, floor protected, so overspray lands only where foam belongs.

Penetrations and gaps to be sealed identified

Pipe, wire and duct penetrations, top plates and rim joists that the foam is meant to seal are located and open, none blocked or already stuffed with something else.

Rough-in inspections for the area on record before foam

Plumbing, electrical and mechanical rough-in inspections for each bay to be sprayed passed and on file with the super, since foam buries that work for good.

Clearance set out at flues and heat-producing fixtures

Flues, chimneys, recessed fixtures and other heat sources in the spray area located and dammed or boxed to the clearance the foam manufacturer and the fixture listing require.

Lift plan set from the manufacturer's maximum pass thickness

Total thickness taken from the approved drawings, maximum thickness per pass and wait time between passes taken from the manufacturer's instructions, both given to the sprayer.

Spray area closed off and signed as restricted

Every entry to the spray area taped or sheeted off with warning signs posted; the person holding the phone observes from outside the restricted area during application.

Temporary exhaust set up to pull air out of the spray area

Exhaust fans placed per the manufacturer's ventilation guidance and discharging away from occupied rooms and air intakes, building HVAC in the area off and its openings covered.

Re-occupancy time posted and other trades cleared

Other trades and occupants out of the area, the manufacturer's re-occupancy time and the planned re-entry hour posted at the entry and given to the super.