Insulbrick Siding

Insulbrick siding is asphalt impregnated fiberboard that is embossed to simulate brick. It is most commonly seen as rectangular panels measuring about 48 by 24 inches. It is usually installed by fastening directly to wood plank sheathing without a water-resistive barrier. This material was available from the 1930s through the 1960s. It is common in some markets, mostly in Canada and the northern United States. This material is also called Insulstone and Insulwood.

Typical Defects Typical defects that home inspectors should report include:

inadequate clearance above grade, hard surfaces, and roof coverings,
absent and deteriorated flashing and sealant around doors, windows, and other penetrations,
absent and improperly installed flashing and kick out flashing at wall intersections,
damaged and deteriorated siding.

Standards This siding is no longer available, so there are no current standards for installation.