Installation Instructions

ManualsBrandsOwens Corning ManualsBuilding materialsFoamular® Extruded Polystyrene Foam Board Insulation 1/2" x 4' x 9' R-3

Additional Considerations

• This product is not required to be installed by someone trained or certiﬁed by the manufacturer.

• As is, this product undergoes no chemical reaction and is in its ﬁnal form when purchased. There is no need to evacuate

the building during installation.

• FOAMULAR

cannot be in contact with hot surfaces such as chimneys or heat sources over 165 degrees F.

• Air Sealing – in applications that require air sealing, use Owens Corning

HomeSealR

Foam Joint Tape to seal joints

between boards. Use Owens Corning

FlashSealR

Foam Flashing Tape to seal FOAMULAR

to other substrates.

• Use HomeSealR

to repair breaks. Replace foam into the board and then tape with HomeSealR

to repair holes.

• Avoid leaving FOAMULAR

and tapes exposed for extended periods of time.

• For use in exposed applications refer to Code Evaluation Report UL-ER8811-01 and local building codes regarding the

need for an ignition barrier.

• To cut boards to size, score with box knife then snap at the score.

• Use a 4”-6” serrated edge knife to cut holes or other penetrations through FOAMULAR

• Termites: in areas designated as very heavy infestation, model and local codes have speciﬁc rules regarding termites.

These include inspection strips, chemical ground treatment and treated lumber or metal framing. Please consult local

codes or code ofﬁcial for details.

Guidelines for Estimating Quantities

• Number of FOAMULAR

boards for each story = Building perimeter (ft) ÷ 4

*Be sure to account for any additional FOAMULAR

boards needed to cover rim joists or irregular details speciﬁc to

your job

• Number of Nails (4' x 8' FOAMULAR

boards) = Number of FOAMULAR

boards X 64

• Number of ProPink ComfortSeal

™

Sill Gasket rolls = Building perimeter (ft) ÷ 82

• Number of ProPink ComfortSeal

™

Framing Gasket rolls = [2 X Height of all exterior walls (ft) + 3 X Length of all exterior

walls (ft) + perimeter of all doors and windows (ft) ÷ 50

• Number of HomeSealR

Foam Joint Tape rolls = Number of FOAMULAR

boards x 12 ÷ 180

*Be sure to account for any additional joints between FOAMULAR

boards due to covering rim joists or irregular details

speciﬁc to your job

• Number of FlashSealR

Flashing Tape rolls = Perimeter of all doors and windows (ft) ÷ 90

FOAMULAR

Installation Guidelines