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L1-15B.25 – Rigid Foam Board Insulation

L1-15B.25 – Rigid Foam Board Insulation Rigid boards are fibrous materials or plastic foams pressed or extruded into board-like forms. These provide thermal and acoustical insulation, strength with low weight, and coverage with few heat loss...

L1-15B.24 – Vermiculite Insulation

L1-15B.24 – Vermiculite Insulation Vermiculite is made from expanded mica, a mineral. Vermiculite used as insulation is identical to the material found in garden centers. Like perlite, it is generally no longer used for insulation, although again, it can still...

L1-15B.23 – Perlite Insulation

L1-15B.23 – Perlite Insulation Perlite is a white gravelly, yet extremely light material. It is the same material found in garden centers and used as part of potting mixtures. Perlite is no longer used as an insulating material, except for the occasional...

L1-15B.22 – Cellulose Insulation

L1-15B.22 – Cellulose Insulation Cellulose insulation is made from wastepaper, such as used newspaper and boxes. It is shredded into small particles, and chemicals providing resistance to fire and insects are added. Cellulose insulation is dusty and brown, with...

L1-15B.21 – Rockwool Insulation

L1-15B.21 – Rockwool Insulation Dirty grey, although the color can range through green and brown as well. Rockwool looks like old wool with dark flecks, and you can often find what looks like sand or small pebbles underneath the insulation. Rockwool is spun,...