Introduction
Alumiseal Corporation provides unequaled reflective insulation and vapor barrier products to the general building industry, refrigerated and environmental controlled spaces.
Whether your application requires the control of heat transfer, water vapor transmission, dust accumulation or gaseous vapor infiltration, call upon Alumiseal products to control that application. These products give you the performance you demand and depend on to operate your facility cost effectively for many years of service.
When Alumiseal products are specified you can be sure that you are getting the finest vapor barrier products available to meet your needs.
Vapor Barrier Typical Properties
| Properties | Typical Value | Unit Measure | Test Method |
Water vapor transmission rate (flat condition) |
.000 | grams/hr/sq meter | ASTM E-96 Procedure B |
Water vapor transmission rate (flex test) |
.0134 | grams/100 sq in (24 hrs) |
Petri dish method Standard test #2 100° F/100° RH |
| Tensile strength | 25,000 | lbs/sq in | ASTM D-882-64T Method A |
| Bursting strength | 96.6 | lbs/sq in | ASTM D774-63T |
| Tear strength | 1800 | lbs/sq in | ASTM D1004-66 |
| Melting point | 480° 250° |
Fahrenheit Celsius |
Fisher-Johns |
| Service temperature | -100° TO 300° -70° TO 150° |
Fahrenheit Celsius |
Fisher-Johns |
Fire Hazard Classification
| Flame spread | 5 | ASTM-E84 | |
| Fuel contributed | 0 | NFDA 255 | |
| Smoke developed | 5 |
Alumiseal Products
Zero Perm
Vapor Barrier
Zero Perm provides a permanent vapor barrier that reduces water vapor permeance to a practical zero. Zero Perm is formed by laminating a 1-mil thickness of aluminum, an excellent water vapor barrier, between two 1/2-mil thicknesses of mylar polyester, an extremely strong, flexible and tough material. Zero Perm is as flexible and workable as polyethylene, yet as strong and durable as a sheet of metal. Zero Perm is fire resistant.
Zero Perm
Pressure Sensitive Tape
Used to seal butt joints and penetrations. Made from standard Zero Perm material with special pressure sensitive adhesive, it provides the same strength as Zero Perm.
Material Dimensions
Alumiseal Zero Perm Vapor Barrier-
4'0'' x 250'0'' (1,000 sq. ft. per roll).
Alumiseal Zero Perm Pressure Sensitive Tape-
1 1/2'' x 200'0''. (Generally two rolls of tape are required to seal the joints of each roll of vapor barrier.)
Recommended Adhesives
Used to bond Zero Perm to common structure materials, also used to seal lap joints. Please contact an Alumiseal representative for recommendations for an adhesive to meet your installation requirements.