Open Cell Spray Polyurethane Foam Insulation cell structure is open and usually weights .5 lbs per cu. ft. and has an aged R-value of up to R-3.81per inch. Open Cell foam ideal applications are walls which have cavities that have 3.5" of available space. The underside of roofs in an attic space is another ideal place for open cell foam, this creates a conditioned space in your attic and eliminates high temperatures that cause extra load on your HVAC system.
Closed Cell Insulation Facts
Closed Cell Spray Polyurethane Foam has a closed cell structure and is much denser weighing 2.1 lbs per cu. ft. and has an aged R-value of up to R-7.4 per inch. Closed cell foam idea use is in place where water contact may become an issue at some point like a crawlspace, basement, under slab, or an exterior application. Closed cell is also idea where greater R-value is needed in a tighter space like a masonry wall with 2" furring strips or cathedral ceilings with limited rafter space. FEMA has determined that closed cell spray foam is an acceptable material to use in a flood zone with continuous contact with flood water without the need to be replaced, Fiberglass is NOT.
Slab Jacking Facts
Slab Jacking using polyurethane foam has many advantages over Mud Jacking;
-Less Weight: won't cause resettling like cementitious grout.
-Non-shrinking: won't shrink like grout causing settling.
-Faster return to use: cures in 15 min. allowing re-use sooner.
-Lifting Structures: can be used to lift buildings and stabilize soils unlike grout.
-Environmentally friendly: water used in grout contaminates soils.
High pressure crack injection uses hydraulic machinery to inject urethane into cracks at pressures reaching 3,000PSI unlike most contractors who use a caulk gun to inject epoxy at 15 PSI. High pressure crack injection can be used on active leaks, even ones with water literally streaming water from the crack.