SIP Foam Core | Polyurethane Construction Foam

Construction foam, specifically polyurethane foams are used as the foam core of every IADDIC SIP Panel structure. Whether you are building shelters, houses, school buildings, or commercial structures you need a structural building material that will hold up to the most demanding applications. Together with structural skins like OSB or MGO, the foam panels cores provide the rigidity needed to ensure your structures withstand the rigors of use for decades to come and can be used in load bearing situations up to 3 stories high.

The polyurethane foam we call SIH is a closed-cell foam material. Maybe the largest economical reason to use IADDIC Panel Building System is to capitalize on the condensed nature of the foam.  In its raw state, it is a number of liquid chemicals.  Once these chemicals are mixed together, the reaction causes them to “foam” and it expands up to 20 times. This means nothing ships as efficiently as IADDIC SIH! Guaranteed!

Shipping Polyurethane Foam

shipping polyurethane foam

The polyurethane foam comes in either 55 Gallon Drums, or 350 gallon totes. One 40′ shipping container can hold about 108 drums or 52,380 lbs of foam.  That one container is equivalent to shipping 20 containers of finished structural insulated panels. That amount of foam can produce 9118 1″ thick SIP Panels or 2336 panels with a 3-1/2″ core.  The one-inch panels can produce a wall about 6.9 miles long, 8 feet high and the 3-1/2″ core panels can produce a wall about 2 miles long.

Why Use Polyurethane Foam?


High Insulating Qualities (about 6.5 per inch)


Impact Resistant

Minimum energy to produce


Used above grade or below

Insect resistant

Mold Resistant

Does Not Rot

Construction Foam Core Applications

Structural polyurethane foam has been used in SIP Panels for construction since the early 1950s and has been used to build millions of square feet of houses, apartments, commercial building and just about every other type of building imaginable. Although no longer part of our line-up, we’ve used this foam to construct entire shelters and small houses completely from foam.

Environmental Impact

SIH construction materials are also Environmentally Friendly.

We have taken the extra steps to ensure our materials are in keeping with our philosophy to not harm the environment (see our environmental impact statement). The table below highlights the blowing agents that we use is zero ozone-depleting, have no Global Warming Potential, and contain no Volatile Organic Chemicals.  And our highly insulated panels are @ R6.5 per inch and save tons of natural resources by requiring less fuel to heat and cool a building.