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Questions about Anti-Fracture and Crack Isolation Membranes
LATICRETE® Blue 92 Anti-Fracture Membrane, LATICRETE 9235 Waterproofing Membrane or LATICRETE Watertight™ are two component liquid and reinforcing fabric systems. The liquid is applied with a paint roller or paintbrush. The fabric is embedded in the liquid. A topcoat is immediately applied. Seams and joints receive a double application of fabric. (LATICRETE 9235 Waterproofing Membrane receives an additional coat when dry to the touch when waterproofing is also desired. 100% silicone or urethane caulk is applied at adjoining surfaces, drains connections and pipe penetrations.)
How soon can I install LATICRETE Blue 92 Anti-Fracture Membrane, LATICRETE 9235 Waterproofing Membrane over :
New Concrete -minimum 14 days at 70 degrees F/ 21 degrees C
When can I install tile over LATICRETE Blue 92 Anti-Fracture Membrane, LATICRETE 9235 Waterproofing Membrane?
When membrane is dry to the touch. Usually 4-6 hours at 70 degrees F/ 21 degrees C after last
If I find an air bubble or blister in the Membrane, what can I do?
Cut out the bubble or blister back to sound and well-adhered membrane. Apply a liberal amount of waterproofing liquid overlapping the existing membrane by 6” (150mm). Place the reinforcing membrane fabric into the liquid and immediately coat with additional waterproofing liquid. Allow to dry for 2 hours and topcoat with a final application of waterproofing liquid.
Can I use a mastic adhesive to install tiles over the anti-fracture membranes?
No. Use only LATICRETE latex fortified thin set mortars or LATAPOXY® epoxy adhesive to install tile or natural stone over the anti-fracture membranes.
Can I adhere a new application of the Anti-Fracture Membrane to an area already treated with the Anti-Fracture Membrane?
Yes. Ensure that the existing membrane is clean and dry. Apply a new application of the membrane over the existing areas.
What adhesives are acceptable for installing tile over LATICRETE Blue 92 Anti-Fracture Membrane, LATICRETE 9235 Waterproofing Membrane?
Some options are:
LATAPOXY 300 Adhesive
LATAPOXY 210 Adhesive
LATICRETE 4237 Latex Additive mixed with LATICRETE 211 Powder
LATICRETE 254 Platinum
LATICRETE 3701 Mortar Admix mixed with LATICRETE 272 Mortar
LATICRETE 333 Super Flexible Additive mixed with LATICRETE 317
Will LATICRETE Blue 92 Anti-Fracture Membrane or LATICRETE 9235 Waterproofing Membrane control moisture or water from entering the underside of the tile system due to negative hydrostatic pressure or excessive moisture content?
No! Not recommended where negative hydrostatic pressure or excessive vapor transmissions exists.
Can I use LATICRETE Blue 92 Anti-Fracture Membrane over control joints and cold joints?
Bringing the existing cold and control joints directly up through the tile layer is the best method of treating these joints. However, treating these joints with the following method can have some success: