jamb (ja'm): the inside vertical face of a doorway or window frame.

foam (fo'me): a lightweight cellular material resulting from the introduction of gas bubbles into a reacting polymer.

Function:

Jamb foam is used to provide an air tight seal around the window, between the window and the surrounding frame. Some builders will stuff fiberglass in this space either in addition to or in place of jamb foam. Jamb foam tends to be easier to use and faster, as the product has a self-adhesive and can be stuck the entire perimeter of the window prior to being fitted.

Application:

Jamb foam comes with a self-adhesive backing. Simply peel the paper release liner and apply the foam to the perimeter of the window using firm pressure, prior to installing into the wall.

Put-up:

LAMATEK's jamb foam is provided in handy compressed rolls. Compression makes the other fluffy material easier to handle and reduces the space it requires by up to 80%. This makes for less storage space and significantly lower freight costs, which can be very important when dealing with lightweight materials.

LAMATEK's 21 years of experience compressing jamb foam gives our product the most consistent compression pattern, minimizing enhanced compression at the core tube which can result on slow or non-recovering foam.

Jamb foam comes with a self-adhesive backing and paper release liner on 3" core tubes.

Materials:

Our jamb foam is made from a 1.2# charcoal grey ether foam. Charcoal grey coloring enhances the life of the product by reducing the effects of UV on the foam. Our 1.2# density is up to 20% more mass then competitive materials, providing a tighter air seal around the window. The ether foam provides an R factor of 4 per inch of width.

Our jamb foam is provided with an extremely quick-tack solution based adhesive. The high tack ensures the product stays in place during installation. The solution based adhesive provides better and more consistent cold weather performance characteristics than other hot-melt based adhesive backings.