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TREMproof® 250GC is a rapid-curing, high-solids, VOC compliant modified polyurethane waterproofing membrane. It can be applied to damp and green concrete. TREMproof 250GC is a one-part moisture-curing elastomer available in three viscosities: Self-Leveling (SL), Roller (R) and Trowel (trowel intended for detailing work only).
TREMproof 250GC is designed for use on backfilled walls, split slab applications, planters and submerged conditions.
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Most fluid-applied below-grade waterproofing membranes require a minimum of 14 days and preferably 28 days cure of the concrete prior to application. TREMproof 250GC may be applied 24 hours after removal of the concrete forms.
TREMproof 201/60 and TREMproof 250GC are suitable for Backfilled Walls, Between Slab, and Planter applications. TREMProof 250GC may also be used in non-potable water storage tanks.
S/L = Self-Leveling, R = Roller Grade, and T = Trowel Grade.
TREMproof 201/60, TREMproof 250GC and TREMproof 260 may be applied at temperatures below 40°F (5°), however, all substrates must be clean, dry and frost-free. It is Tremco’s best recommendation to apply products when substrate and ambient temperatures are at 40°F (5°) and rising. Please note the following when applying these products at temperatures below 40°F (5°).Special Note:
TREMproof 250GC and TREMproof 260 require a protection course. A TREMDrain drainage course may be an acceptable substitute or used as an add-on. TREMDrain DPI (drainage, protection and insulation board) is designed for use with TREMproof 260 and may be applied while the membrane is still tacky. The semi-rigid nature of the board acts as a protection course for the TREMproof 260 waterproofing membrane.
Use of a drainage mat reduces hydrostatic head pressure, affording protection to the membrane and better directs water to the perforated foundation drainage system. Combining a drainage mat with a Tremco below-grade waterproofing membrane typically qualifies for extended warranties.
TREMproof 250GC and TREMproof 201/60 meet or exceed all minimum performance requirements of ASTM C 836.
TREMproof 201/60 requires a minimum of 14 days, (moisture testing required), preferably 28 days. Paraseal, TREMproof 250GC and TREMproof 260 only require 24 hours following the removal of concrete form work.
Spraying of TREMproof 250GC is not recommended. If a sprayable membrane is preferred or required, TREMproof 260 may be a suitable alternative. Please consult with Technical Service.
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