What Is Block Insulation

Insulating concrete blocks are sometimes stacked without mortar (dry-stacked) and surface bonded. Insulating cores increases wall R-value. Insulating outside of concrete block wall places mass inside conditioned space, which can moderate indoor temperatures.

Is block a good insulator?

Concrete block makes a cost-effective and structurally sound wall, but it has little thermal resistance. Depending on the density of the blocks, an 8-inch thick block wall without any other type of insulation has a thermal resistance value between R-1.9 and R-2.5.

How do you insulate a block house?

Depending on whether the concrete block walls will be covered or if the top of the wall is exposed can really change the way they are insulated. The option for insulating concrete block walls includes spray foam insulation, injection foam insulation, polystyrene beads, foam boards, and loose-fill masonry insulation.