The gap size and location will determine what backing material is most suitable. Popular choices that are compatible with LiquidArmor™ LT include: Great Stuff Pro™ Gaps & Cracks, Great Stuff Pro™ Window & Door and foam backer rod. If Great Stuff Pro™ Gaps & Cracksor Great Stuff Pro™ Window & Door is used, be sure it is fully cured before applying LiquidArmor™ LT.

LiquidArmor™ Flashing and Sealant products are designed to span non-moving joints (joints that move <15%). If more movement is needed, consider traditional expansion joint treatments or contact your local DuPont representative for suggestions.

As the application thickness increases, the product may take longer to completely dry. As the application thickness extends below the recommended minimum thickness, the air and water barrier performance of LiquidArmor™ LT may become compromised.

Ensure product application complies with local building codes.

LiquidArmor™ LT will typically be 'dry to touch' within 30-45 minutes.Cure time is related to conditions and at lower temperatures, the tack free time could extend to 60 minutes.LiquidArmor™ LT is rain resistant within 15 minutes.

It is recommended that building components, such as windows, that will be in contact with LiquidArmor™ Flashing and Sealant, are not to be installed until the LiquidArmor™ is 'dry to the touch'.

LiquidArmor™ LT adheres well to CMU block, extruded polystyrene foam, polyisocyanurate foam, aluminum, steel, OSB, plywood, silicone caulk and Dens glass gold. LiquidArmor™ LT generally does not adhere well to polyolefin materials.

As with all adhesive type products, actual adhesion strength to various substrates will vary. LiquidArmor™ Flashing and Sealant products exhibit higher adhesion properties to CMU block, wood products and steel than they do to lower surface energy materials. It is reasonable practice to apply a small amount ofLiquidArmor™ Flashing and Sealant on any new substrates, allow it to cure and assess its adhesion using a field pull test method like ASTM D4541.

First, the IBC requires that 'Flashings be installed in such a manner so as to prevent moisture from entering the wall or to redirect it to the exterior. 'The IBC does not directly call out performance metrics for the flashing, but it does call out under Section 1402.2 that ASTM E331 testing may be used to demonstrate an exterior wall envelope's ability to resist wind-driven rain. LiquidArmor™ LT has been tested per ASTM E331 at 6.24 psf (~49 mph wind*) in two commercial wall assemblies including penetrations and board joints flashed with LiquidArmor™. The first wall system tested was the DuPont™ Thermax™ Wall System (TWS) with LiquidArmor™ QS and LT; the wall system effectively prevented water penetration.

Second, while LiquidArmor™LT is NOT a foam plastic, Section 2603.5.5 in foam plastics section of the IBC does require that an entire wall assembly of an exterior wall in building Types I, II, III and IV pass NFPA285 if the exterior wall contains a foam plastic. LiquidArmor™ LT has been evaluated and approved for use in multiple exterior wall assemblies that contain foam plastic, including the Ultra Wall System and the Thermax™ Wall System. See your local DuPont sales representative for more details.