5027 33RD AVE W 2018-01-02 MF Import

Processing Equipment 2:1 transfer pumps are recommended for material transfer from container to the proportioner. The plural component proportioner must be capable of supply- ing each component within t 2% of the desired 1:1 mixing ratio by volume. 1-lose heaters should be set to deliver 120°F to 135°F materials to the spray gun. 'these settings will ensure thorough mixing in the spray gun mix chamber in typical applications. Optimum hose pressure and temperature will vary with equipment type and condition, ambient and sub- strate conditions, and the specific application. It is the responsibility of the applicator to properly interpret equipment technical literature, particularly imorna- tion that relates to the acceptable combinations of gun chamber size, proportioner output, and material pressures. The relationship between proper chamber size and the capacity of the proportioner's pre -heater is critical. Mechanical purge spray duns (specifically direct impingement or DI type) arc recommended for highest foam quality. CAUTION: Extreme care must be taken when removing and reinstalling drum transfer pumps so as NOT to reverse the "A" and "B" components. Processing Parameters and Physical Characteristics Pre -heater Temperature: "A"and"B-120-135°F Hose empera ore: -A"d'BM-135 ressures: 1000-1500 psi (dynamic)* Mix Ratio Parts: 1 to 1 by volume "A" to'B" Viscosity at 75T 400-500 cps -B" Component Shelf Life 6 months @ 65TF to 60°F r Dependent upon hose length. Thermal Barrier The International Building Code and International Residential Code requires that SPF be separated from the interior of a building by an approved fifteen (15) minute thermal barrier, such as 1 f2" gypsum wall board or equivalent, installed per manufacturer's instructions and corresponding code requirements. The International Building Code allows for omission of the prescribed thermal barrier in certain instance, such as: • attics and crawlspaces with limited access approval by way of diversified testing, such as room corner protocols Local building codes may vary and must be consulted for applicability of thermal barrier exceptions. Handling Information Applicators should ensure the safety of the jobsite . ",d construction personnel by posting appropriate signs warning that all "hot work" such as welding, soldering, and cutting with torches should not take place until a thermal barrier or approved equivalent is installed over any exposed polyurethane foam. Vapor Retarder ` Bayseal CC qualifies as a vapor retarder as defined by the International Code Council and ASHR.AE (Class 11) at a minimum thickness of one inch. Build- ing construction types with a persistent, high mois- ture drive require additional moisture remediation. The contractor should consult local building codes to establish the vapor retarder requirement. Page 3 of 4 — Document contains important information and must be read in its entirety.