OSI® GreenSeries™ Pro-Foam II™ Minimally Expanding Sealant is a one-part, moisture cure
polyurethane foam in a 29 oz. pressurized container. It is specially designed to be dispensed in bead
form for filling gaps, cracks and holes in most types of construction projects to stop energy draining
drafts and sound transmission. The closed-cell, energy saving foam insulates with an R-5 factor per
inch of foam with slight to minimal expansion. Pro-Foam II™ adheres to all types of wood, metal,
concrete, brick, glass, drywall, most plastics and other building materials.
OSI® GreenSeries™ Pro-Foam II™ is used to insulate and fill around windows, door frame joints,
jambs, mud sills, header and corner joints, top plate penetrations, exterior and T-joints, electrical and
plumbing penetrations, and other areas where air infiltrates or heat loss can occur.
Ideal for adhering and joining insulation panels, and when used with Pro-Series® Pro Gun II, may be
used in place of conventional adhesives for adhering drywall to wood framing.
Also works well as an effective acoustical sealant for reducing sound transmissions and maintaining
specified STC values in most wall partitions.
In cold weather applications, containers should be kept at 65°F (18°C) for maximum
performance. Product temperatures below 55°F (13°C) will experience slow extrusion rates
Pro-Foam II™ is not a fire stopping material and should not be used in areas that require fire
proof or fire stop materials
Pro-Foam II™ will not adhere to polyethylene (PE), PTFE, oils, greases, mold release agents
and similar materials
Pro-Foam II™ should not be left exposed but should be covered with at least ½” cement plaster or fire-rated gypsum board or an equivalent barrier that will provide a finished fire
rating of 15 minutes or more.
Pro-Foam II™ should not be used in contact with chimneys, heater vents, steam pipes or
other areas which could be subject to surface temperatures greater than 200°F.
Avoid doing hot work or flame cutting around urethane foams. If necessary, follow the
recommended industrial procedures.
Pro-Foam II™ should be protected against UV light (i.e. sunlight) by painting or staining to
prevent long term discoloration or degradation.
A ¼” (6.3 mm) bead size will deliver approximately 5315 ft. (1619 m) of foam.
A 3/8” (9.6 mm) bead size will deliver approximately 2361 ft. (720 m) of foam.
A ½” (12.7 mm) bead size will deliver approximately 1328 ft. (405 m) of foam.
Please note: Yields shown are based on theoretical calculations, for comparison purposes, and will vary depending on ambient conditions and
Tools Typically Required:
Utility knife, caulking gun and tool to puncture inner seal of cartridge.
The temperature of the adhesive, the surfaces and the working area must be above 40°F (4°C) and below 100°F (38°C). For best performance,
apply adhesive at 70°F (21°C). Ensure surfaces to be bonded are clean, dry, structurally sound and free of dust, grease, oil, snow, ice, standing
water or other contaminants. To increase adhesion, sand glossy surfaces to a dull finish. Pre-fit all materials prior to applying product. Cut off
tip of cartridge at a 45° angle to desired bead size. Puncture inside seal of cartridge.
Using the Pro-Gun dispensing applicator, spray foam into area needing to be filled or surface to be bonded. Foam is tack-free in approximately
15 minutes and can be cut in less than 1 hour. Pro-Foam II™ cures in approximately 4 to 24 hours. Cure time is dependent upon temperature,
humidity and amount of product used. If necessary, any excess cured foam can be trimmed away with a sharp knife or sanded. Cured foam
exposed to sunlight must be covered with paint, sealant or solid colored stain. Paneling and Foamboard Installation:
Apply continuous beads of adhesive to studs or furring strips (wood or metal). For wall surfaces, prepare surface accordingly and apply
continuous parallel beads 12” to 16” on-center. Position panel and press firmly into place. Use finishing nails or mechanical fasteners along top
and bottom edges to hold panels in place. Temporary blocking of panels may be required until adhesive sets.
Clean tools and uncured adhesive residue immediately with warm water and soap. Cured adhesive may be carefully cut away with a sharpedged