Miraply H with SeamLOCK Technology is a nominal, 70-mil horizontal grade, self-adhering, blindside waterproofing membrane. The dual laminate membrane fuses a 45-mil thick, reinforced TPO sheet to a 25-mil butyl adhesive coating, combining two of the most time-tested waterproofing technologies used worldwide. With the addition of new Seam LOCK pre-primed strips, MiraPLY-H is not only tough, durable and flexible, it is easy to install.Questions? Contact us
The substrate must be relatively even without noticeable high spots or depressions, relatively smooth, free of protrusions, debris, sharp edges or foreign materials and must be free of accumulated water, ice and snow. Earth, crushed stone, or soil shall be compacted such that the soil is not displaced from traffic or concrete placement. Typically, #57 stone compacted to 85% Proctor density provides a suitable substrate. MiraPLY can span voids and gaps up to 1″. MiraDRAIN can span voids and gaps up to 2″ and shall be installed over sub-base prior to MiraPLY-H. Install MiraDRAIN over sub-base before installing MiraPLY-H with SeamLOCK Technology.
Start the installation at one corner of the building. Unroll the first sheet of MiraPLY-H square/parallel to building wall starting at one corner with the TPO side down and the adhesive facing up with the Factory-Applied Tape ( FAT™) on the side for the succeeding sheet to lap onto. Unroll the next sheet of MiraPLY-H lapping the SeamLOCK pre-primed strip onto the previously installed sheet a minimum of 3″. Stagger end laps and extend onto adjoining sheets a minimum of 3″. Ensure that the membrane lays flat and no openings are visible. At side laps, simultaneously remove the release liner on the factory applied tape and pre-primed strip then mate the two sheets together. At end laps ensure the TPO and Butyl surfaces are clean and free of debris and surface contaminants. Position 6″ MiraPLY Seam Tape in the lap area. Roll MiraPLY Seam Tape using a hard rubber roller and fi rm hand pressure. Remove the release liner and join the two sheets together. After seam is fully constructed, roll the entire seam area with a hard rubber roller using fi rm hand pressure.