Rigid Insulation With Rainscreen Over Concrete Wall

There are several ways to install subflooring above the rigid foam.

Rigid insulation with rainscreen over concrete wall.

The best way to insulate the interior side of a basement wall is with foam insulation that is adhered to or sprayed directly on the concrete. With a minimum of 70 recycled content the installed thermafiber products contributed to valuable leed credits helping the building earn a leed platinum certification. The high density outer layer offers greater rigidity and water repellence while the inner layer helps to conform to architectural features. Cladding attachment over thick exterior rigid insulation background current building code does provide prescriptive means to attach cladding over exterior insulation table r704 3 note v.

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. Current pneumatic nailers have maximum fastener lengths. This refers to insulation uninterrupted by furring or by the webs of concrete masonry units. For example mineral wool boards are typically installed over the primary wrb layer and add an additional drainage surface behind the cladding as well as a non combustible insulation layer.

Minimum nail length must accommodate sheathing and penetrate framing a minimum 1 inches. Case study salesforce tower. You can use either one or two layers of plywood or osb and the subflooring can either be fastened to the concrete with long tapcon screws or it can simply float above the foam. Our rainscreen and cavity wall insulation within the exterior wall stud cavity and the external cavity offers superior long term thermal efficiency fire resistance moisture control and acoustic performance.

Rainscreen cavity wall insulation. Closed cell spray polyurethane foam or either xps eps or polyisocyanurate rigid foam. Your only option is to cover the inside of the exterior walls with a continuous layer of insulation as though you were insulating a basement wall. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab.

Any of the following insulation materials are acceptable for this purpose. One of the options the iecc prescriptive r values iecc table 502 2 1 calls for continuous insulation on concrete masonry and other mass walls. Rigid foam can be adhered to a poured. We re proud to say our products can be found in some of the tallest and safest buildings around the globe like salesforce tower.

But since the below grade interior also has to be insulated to a continuous r15 it s probably easier to do the bulk of the insulation on the interior then install rigid rock wool on the exterior sufficient to bring the u factor under the code max u 0 045 r22 whole wall including the r values of the siding interior finish materials the. And there is no effective way to fill the voids in an existing concrete block wall.