In addition to insulation integrated into prefabricated wall panels, insulation used with the Utilihab system takes two common forms; rigid panels and non-rigid mat, sheets, batts, or quilts. The system only employs fluid or loose fill insulation forms where they are pre-formed into sheets or panels in some fashion.

Rigid insulation is generally employed as solid panels without any particular fastening, relying on friction between frame members. Some more brittle panel materials may employ an adhesive bonded edge reinforcement such as plastic U-channel or simple reinforcing tapes. Placed between secondary framing members like flush-mounted wall panels, it uses thicknesses from 20-50mm and would employ flush panel dimensions of 1000x2400mm. Where walls afford open interstitial space, 1050mm wide panels up to 100mm thick are employed and shims made of the same rigid panel material may be used to secure the panels between secondary frame members where necessary. Where cut-outs and channels are needed for accommodating utilities, panels are cut to size and supported from secondary frame members using small bolted angles or simple extended T-bolts as pins. Possible rigid panel materials include;

Polyfoam: styrofoam or aluminized pre-cured polyurethane foam.

Mineral Foam: pre-cast into panels and wrapped with edge reinforcement.

Glass Foam:

Thick Recycled LDPE Foam:

Foamed Cellulose Composite:

Cork: often in a composite panel with laminated layers.

Rigid Aerogel Composite: usually semi-rigid in nature.

Wheatboard and other compressed plant panels: usually needing perimeter reinforcement.

Non-rigid insulation is employed as mats, sheets, batts, and quilts provided in roll form. Though non-rigid, this forms can usually be supported with minimal buckling by friction along vertical frame members and compression between interior and exterior wall panels. Thinner material may supported by snap-in plastic flanges on Secondary frame members for walls with continuous open interior space and pop-in sheet plastic battens placed in inner-edge slots. To make spaces for utilities runs, horizontal braces of wood, plastic, or plastic or alloy profiles may be used, attached with angles or other profile connectors. Very thin sheet material must be attached by adhesive to the back of outer or inner wall panels using double-sided tape. Typical forms of this insulation include;

Conventional Fiberglass batt: non-preferred.

Recycled Cotton batt:

Recycled Wool batt:

Recycled PET batt:

Polyester/Aerogel Composite sheet:

Foamed LDPE:

Aluminized Bubble-Wrap:

Loose-Fill Pillows/Quilts: