The present disclosure relates generally to methods, devices and systems for insulation, e.g., of cavities associated with walls, ceilings, floors and other building structures, with foam insulation. In one aspect, the disclosure provides a method for providing a cavity of a building with a predetermined amount of foam insulation. The method includes actuating a valve to begin dispensing foam insulation into the cavity, the actuation being performed by a user, the actuation by the user fixing a start time and/or a zero volume of a time and/or volume meter; then, dispensing the foam insulation from the insulation dispenser into the cavity as the time and/or volume meter counts time and/or volume dispensed; then when a predetermined time after the start time elapses or a predetermined volume of the foam insulation beyond the zero volume is dispensed as measured by the time and/or volume meter, actuating the valve to stop dispensing the foam insulation into the cavity.

An insulation system includes roof sheathing panels, spaced apart structural members, a first insulation material, and a second insulation material. The first insulation material is disposed between pairs of the spaced apart structural members. The second insulation material is disposed across the spaced apart structural members and the first insulation material, such that both the spaced apart structural members and the first insulation material are covered by the second insulation material.

A cool roofing system includes highly reflective calcined kaolin particles having a solar reflectance of 80% to 92%. When applied to a roofing substrate, the highly reflective kaolin particles produce a roofing system having a solar reflectance greater than or equal to 70%.

A manner by which to form a thermal barrier upon a surface, utilizes a pneumatic blower to form a layer of thermal insulation material and a layer of radiant barrier material. The pneumatic blower is first charged with the thermal insulation material, and the thermal insulation material is metered upon the surface. Then, the pneumatic blower is charged with the radiant barrier material, and the radiant barrier material is metered upon the thermal insulation material.

A cool roofing system includes highly reflective calcined kaolin particles having a solar reflectance of 80% to 92%. When applied to a roofing substrate, the highly reflective kaolin particles produce a roofing system having a solar reflectance greater than or equal to 70%.

A loosefill insulation installation includes a loosefill insulation material made from fiberglass fibers. The loosefill insulation material unexpectedly has improved thermal performance, even through the amount of mineral oil applied to the fiberglass fibers is reduce. For example, the fiberglass fibers can be coated with a mineral oil in an amount that is between 0.1% and 0.6% of the weight of the fiberglass fibers, such as about 0.375%.

An insulation system includes insulation support wires connected to wooden structural members that support roof sheathing. Insulation batts are disposed between the wooden structural members and on the insulation support wire. Portions of the insulation batts are disposed directly under bottommost surfaces of the wooden structural members.

Some embodiments of the present technology may encompass pour in place roofing insulation systems. The insulation systems may include an upper roof surface material that is configured to be vertically spaced apart from the top surface of the roofing structure. The insulation systems may include a plurality of expansion limiters that are configured to extend between the roofing structure and the upper roof surface material. The insulation systems may include a polyiso foam insulation material that is configured to be disposed between and filling at least substantially all vertical space between the roofing structure and the upper roof surface material.