ExoAir® Eco is a UV-stable, pre-compressed, self-expanding, flexible joint seal. It is a polyurethane foam that is impregnated with a modified acrylic resin and treated with a pressure-sensitive adhesive on one side for ease of installation. ExoAir Eco self-expands to fill the joint creating an elastic, vapor permeable, weather tight seal.
Tremco compressed tapes are compatible with and can be sealed with silicone, urethane and acrylic sealants. If the tape is sealed, however, the vapor-permeability is reduced due to the moisture vapor transmission value of the sealant. Tremco compressed tapes are UV- and weather-resistant and require no additional seal.
Tremco manufactures several widths of compressed tapes and the appropriate size should be used in accordance with joint widths. Joints that are not parallel may require the use of more than one width of compressed tape.
Depending on joint size, the installation of Tremco compressed tapes can generally be completed in 20% of the time as compared to a typical sealant joint.
Tremco compressed tape expansion is dependent upon the temperature of the tape at the time of installation. In order to slow the rate of expansion, Tremco compressed tapes should be stored in a cool, dry environment prior to application. The cooler the tape is, the slower it expands.
Tremco compressed tape expansion is dependent upon the temperature of the tape at the time of installation. In order to accelerate the rate of expansion, Tremco compressed tapes should be stored in a warm, dry environment prior to application. The warmer the tape is, the more quickly it expands.
At a temperature of 68°F(20°C), Tremco compressed tapes will fully expand in about 45 minutes. The tapes will expand slower in colder temperatures and faster at higher temperatures.
The self-adhesive is only an installation aid. The compressed tape can be installed and shimmed intermittently to hold the tape in place. After the tape has fully expanded, the shims should be removed. The voids in the tape created by the shims will self-seal through expansion of the tape once the shims have been removed.
Tremco compressed tapes are designed such that the depth is greater than the width in order to prevent displacing of the tape from the joint during cyclic movement.