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3230 Matthew Ave., N.E., Albuquerque, NM 87107 Tel.: (505) 837-1112 Fax: (505) 837-1529
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PERLITE BLOCK AND CAVITY FILL
MASONRY LOOSE FILL INSULATION
Perlite loose fill insulation is an inert volcanic glass expanded by a special heat process that can be treated with water repellent material when necessary. The resultant lightweight product is a white granular material, which handles and pours easily. It provides a quick, inexpensive and permanent method for efficiently insulating masonry walls. Depending on design conditions, reductions in heat transmission of 50 percent or more may be obtained when perlite loose fill is used in the hollow cores of concrete block or cavity type masonry walls. Basic Product Properties: Thermal Insulation Perlite contains countless tiny air cells that account for its excellent thermal insulation and lightweight. Thermal conductivity factors at the recommended density range of 2-11 pcf (32-176 kg/m3) are normally 0.27 k to 0.42 k. The efficiency and economy of perlite loose fill insulation has been proven many years in the insulation of storage tanks for liquid gases, such as oxygen, liquid natural gas and nitrogen at temperatures as low as -400 degrees F (-240 degrees C). Water Repellency Perlite loose fill insulation can be treated to minimize water transmission. Laboratory tests on water transmission by Structural Clay Products Research Foundation showed a cavity wall filled with treated perlite will not transmit water to the interior wythe even under the most severe conditions. Performance of overall wall was rated "excellent" in accordance with procedures established by the National Bureau of Standards in BMS 82. However, it should be noted that treated perlite insulation will not waterproof a poorly constructed masonry wall! Permanency Perlite is inorganic and therefore rot, vermin, and termite resistant and non-combustible with a fusion point of approximately 2300 degrees F (1260 degrees C). It is as permanent as the walls which contain it. Non-Settling Perlite loose fill supports its own weight in the wall without settling as verified by actual field measurements.
Flow Ability
Perlite consists of free flowing granules, which that seek out and completely fill the smallest crevices and mortar areas without bridging.
Fire Ratings
Underwriters' Laboratory Design No. U905 shows that a 2-hour rated 8,10, or 12-inch concrete block wall is improved to 4 hours when cores are filled with perlite. Perlite loose fill has been tested in accordance with ASTM E-136 and was rated non-combustible.Sound Reduction
Perlite loose fill insulation has the ability to fill all voids, mortar lines, and ear holes thus enabling it to reduce airborne sound transmission through walls. Lightweight 8 inch (20 cm) masonry block filled with perlite achieves an STC of approximately 51 which exceeds HUD sound transmission standards.
Benefits Perlite loose fill insulation functions as a permanent, non-toxic, non-combustible, rot-proof insulation which minimizes winter heat loss and summer heat gain. These properties allow for greater comfort at lower long-term cost. Thermal performance tests using ASTM C-236 Guarded Hot Box Method have shown conclusively that perlite masonry loose fill insulation is the superior concrete block insulation when compared to expanded polystyrene (EPS) inserts, expanded polystyrene (EPS) beads, and vermiculite. Other test conducted by independent laboratories also confirm the superior qualities of perlite loose fill insulation:
Cost Savings: Insulation is essential in all construction for energy conservation. The original cost of installing perlite loose fill insulation can be recovered quickly due to substantial reductions in heating and air condition energy consumption. In addition, perlite loose fill insulation cuts installation costs since it is lightweight and pours easily and quickly in place without need for special installation equipment or skills. The insulation may be poured directly into walls or emptied into a simply wood or metal hopper which can be slid along the wall to direct the free flowing perlite into cores of cavities thus insulating all voids and air pockets. Installation: a-The insulation must be installed in the following locations: b-The insulation shall be poured directly into the wall at any convenient internal. Wall sections under doors and windows shall e filled before sills are placed. c-All holes and opening in the wall through which insulation can escape shall be permanently sealed or caulked prior to installation of the insulation. Copper, galvanized steel, or fiberglass screening shall be used in all weep holes. (The inclusion of weep holes is considered good construction design practice to allow passage of any water that might penetrate the cavities or core spaces of wall construction.)
Test ASTM E84
Flame Spread
Fuel Contribution
Smoke Density
Results
0
Fed. Spec HH-1-515D
Critical Radiant Flux
Smoldering Combustion
Smoldering Combustion
Flaming Combustion:None
Weight Loss:Nil
Block Thickness in Inches Densityof Block Uninsulated Insulated R U R U 6 80 pcf
Lightweight2.64 .38 6.75 .15
125 pcf
Sand & Gravel2.05 .49 3.86 .26 8 80 pcf
Lightweight2.86 .35 8.37 .11 125 pcf
Sand & Gravel2.21 .45 5.06 .20 10 80 pcf
Lightweight3.00 .33 11.02 .09 125 pcf
Sand & Gravel2.31 .43 5.95 .17 12 80 pcf
Lightweight3.12 .32 13.44 .08 125 pcf
Sand & Gravel2.38 .42 7.17 .15
Values given are approximate and include the effect of inside and outside air film resistances
Sq. ft. of wall area(b)
1"
Cavity2"
Cavity3"
Cavity6"
Block8"
Block12"
Block100 2 4 6 5 7 12
500 10 21 31 23 33 58 1,000 21 42 62 46 65 118 2,000 42 84 124 96 130 236 3,000 63 126 186 138 195 354 5,000 105 210 310 230 325 590 7,000 147 294 434 322 455 826 10,000 210 420 620 460 650 1,180
(a) 4-cubic foot bags required to fill
(b) a standard 8"x16" block equals 0.89 sq.ft.
Multiply the number of blocks times 0.89
to calculate the total square footage needed.