Rigid Insulation On Concrete Wall With Zee Furring

Typical wall detail showing z furring in place.

Rigid insulation on concrete wall with zee furring.

The correct method of using rigid foam is to run continuous 4 foot by 8 foot sheets of the foam across the concrete basement wall making the rigid foam the de facto wall. Asi z furring sec tion is made from 24 gauge galvaniz. This refers to insulation uninterrupted by furring or by the webs of concrete masonry units. After that thin furring strips are installed on top of the foam to provide a firm base for the drywall screws and drywall.

Rigid insulation panels are positioned snugly against the web of a z furring section. Z furring channel make installing rigid drywall ez. Clarkdietrich z furring is used to furr out interior masonry or poured concrete wall substrates and to support rigid polystyrene mineral or fiberglass batt insulation while providing a uniform plane for gypsum panel attachment. How to glue polystyrene insulation to a concrete wall.

Furring strips should be fastened to the concrete wall through the rigid foam. Some people mistakenly believe that a damp concrete wall should be able to dry toward the interior in other words that any insulation on the interior of a basement wall should be vapor permeable. Polystyrene foam boards commonly called foamboard are a clean lightweight convenient way to insulate bare concrete walls. Z furring must be installed vertically with the 3 4 flange against the substrate.

The steeler z furring channel is an installer s dream as it allows you to create a firmer and more level foundation to support rigid drywall. Examples include rigid insulation adhered to the interior of the wall with furring and drywall applied over the insulation continuous insulation in a masonry cavity wall and exterior insulation and finish systems.