Northland Construction Supplies

Durafoam Gun Grade Foam 24oz spray insulation.  DuraFoam Gun Foam is designed
to be dispensed through any professional one-component dispensing unit. The product
forms a superior air seal which prevents heat loss, noticeable drafts and is ideal for a
variety of application areas. Sold by the can.

Application Areas

Apply DuraFoam onto any clean surface to fill and seal around windows and door frame
joints, beneath base plates, mud sills, top plate penetrations, corner joints, T-joints,
exterior cracks, around utility panels, pipes and duct penetrations. It is specifically
designed to be dispensed as a bead for filling cracks, crevices and smaller cavities
on flat or irregular surfaces.

Properties

DuraFoam is a pressurized, portable, onecomponent foam system. Applied in a bead
form, it cures slowly to semi-rigid closed cell foam upon reaction with moisture, such as
ambient humidity. A desirable bead growth of 200-300% during the first hour of cure
should be expected. Expansion is dependent on ambient conditions. This product forms a superior air seal that prevents heat loss and noticeable drafts. DuraFoam cures tack-free within 5 minutes depending on moisture and temperature conditions. A one inch bead at
room conditions is cuttable within 1 hour and is fully cured in 12-24 hours.  DuraFoam adheres to almost all building materials with the exception of surfaces such as polyethylene, Teflon®,silicone, oils and greases, mold release agents, and similar material. Optimum chemical temperature is between 65°F and 80°F (18°C to 27°C), but may be applied in
cold or hot ambient conditions, as long as the working chemical temperature range is
maintained. Cured foam is dimensionally stable, and known to be resistant to
temperatures ranging between -200°F to +240°F (-129°C to + 115°C), and to aging,
but not UV rays (i.e. sunlight) unless painted, covered or coated. Cured PU foam
is chemically inert and non-reactive in approved applications, and will not harm
electrical wire insulations, Romex®, rubber, PVC, polyethylene (i.e. PEX) or other
plastic. It is approved for use around wires, plumbing penetrations, etc., and contains no
formaldehyde.

DuraFoam systems require no outside mechanical or electrical power source. When applied, the foam will seal, bond and protect against dust, air infiltration, pests and more.

Preparation For Use

Substrate must be clean, firm, free of loose particles and free of dust, grease and mold
release agents. Surfaces not to be foamed must be protected. Shake cans well before
using. For best results in cavities larger than 3 inches in diameter, dampen substrate
to supplement atmospheric humidity in affecting consistent cure throughout applied
foam.

Application / Use

After following instructions for set-up, cans are ready to use. Foam application can be
interrupted, when needed, as outlined in the instructions DuraFoam is especially useful
for irregular voids and non linear cracks and crevices, as foam will expand slowly up to
200% during the curing process. Overfilling cavities can result in a prolonged curing
process and insufficient air or substrate moisture during cure may cause delayed
expansion. Remove fresh foam over spray with DuraFoam Cleaner or solvents such as acetone. Cured foam can only be removed mechanically.

Special Handling

Contents are under pressure. Do not puncture or incinerate. Do not place in hot
water or near radiators, stoves or other sources of heat.
Important Note: Use only in well-ventilated areas. Wear impervious gloves, protective eyewear, and suitable work clothes when using. Read all instructions and safety information (MSDS)
prior to use of any product. The product contains no formaldehyde. Cured foam is non-toxic. KEEP OUT OF REACH OF CHILDREN.

Product Storage

Store in cool, dry area. Do not expose to open flame or temperatures above 120°F
(49°C). Excessive heat can cause premature aging of components resulting in
shorter shelf life. DuraFoam is reusable by following product instructions.