Tremco TREMproof 250GC Roller: Waterproofing Membrane


TREMproof 250GC can be applied just 24 hours after removing concrete forms, allowing for faster progress. Its compatibility with damp concrete reduces delays due to rain or other moisture sources. The unique feature of catalyzing TREMproof 250GC  with water, when needed, accelerates curing times, particularly in cold temperatures and low humidity, further streamlining the construction schedule. With the ability to apply TREMproof 250GC at a rate of up to 120 mils in a single lift, the application process is faster without compromising performance. Additionally, it can be applied in multiple lifts to achieve a 215-mil high-build system for maximum protection when necessary.

Technical Data Sheet

Safety Data Sheet

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Tremco TREMproof 250GC Roller: Waterproofing Membrane

Tremco tremproof 250GC is a one part Roller grade, a fast-curing, high-solids, VOC-compliant modified polyurethane waterproofing membrane that works with damp and green concrete. Available in three viscosities – Self-Leveling (SL), Roller (R), and Trowel (for detailing work only) – it’s a one-part moisture-curing elastomer. Any questions?

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Tremco TREMproof 250GC roller grade polyurethane waterproofing membrane is specifically designed for a variety of applications, including backfilled walls, split slabs, planters, and rapid curing submerged conditions. Moreover, it serves as a complementary waterproofing membrane for Tremco’s Roofing systems, working well with both concrete masonry units and plywood substrates.

Features and Benefits: Tremco Tremproof 250GC Roller grade provides several benefits, including fast application within 24 hours after removing concrete forms, and compatibility with damp concrete, which reduces delays from rain or moisture. Additionally, the membrane’s unique ability to catalyze with water accelerates curing times, especially in low humidity, ultimately making construction schedules more efficient.

The product can be applied at a rate of up to 120 mils in a single lift, ensuring quick application without sacrificing performance on backfilled walls and other applications. Furthermore, it can be applied to achieve a 215-mil high-build system when protection is essential suitable for water immersion.

Coverage Rates in Wet Mils:

  • Approximately 25 ft2/gal (0.61 M2/L) at 60
  • Approximately 18 ft2/gal (0.44 M2/L) at 90
  • Approximately 13 ft2/gal (0.32 M2/L) at 120
  • Approximately 7.5 ft2/gal (0.19 M2/L) at 215
  • Rapid Curing: Tremco 250GC Roller cures quickly, enabling faster project completion and minimizing construction downtime.
  • High-Solids Content: Its high-solids content results in a strong, durable membrane that resists harsh environments and offers long-lasting protection.
  • VOC Compliant: Tremco Roller complies with environmental regulations, promoting a healthier and more eco-friendly construction industry.
  • Adhesion to Damp and Green Concrete: Adhering to damp and green concrete, it reduces rain or moisture-related delays, making it convenient for various climates.
  • Compatibility with Various Substrates: Suitable for multiple substrates like plywood, Tremco 250GC Roller is versatile for different applications.
TREMproof 250 GC Documents

Certification Letter

LEED Letter

Drainage/Protections Course Recommendations

Below Grade Waterproofing Brochure

The Tremco TremProof 250GC roller grade is designed as a rapid-curing, high solids VOC compliant modified polyurethane waterproofing membrane, designed specifically for use on green and damp concrete, as well as other acceptable substrates like concrete and plywood. This product excels in split slab applications, planters, and even under submerged conditions, offering protection without sacrificing performance.

The product is available in three viscosities including self-leveling SL, roller R, and trowel intended for detailed work, making it suitable for a wide variety of applications. A single component, rapid curing fluid-applied elastomeric waterproofing membrane, TremProof  tremproof 250GC roller grade can be applied to achieve the desired thickness.

Features & Benefits

  • Rapid Curing: The single component rapid curing fluid reduces delays.
  • Versatile Application: From backfilled walls split slab applications to damp and green concrete, the 250GC can be used in a range of challenging conditions.
  • High Solids Content: Tremco Tremproof 250GC roller grade is designed as a rapid curing high solids VOC compliant modified polyurethane waterproofing membrane.
  • Ease of Use: With the capability of application by roller, trowel or self-leveling, this product speeds application time and reduces labor costs.
  • Compatibility: Suitable for use on a wide range of substrates and Tremco’s vegetated roofing systems.
  • Durable Protection: Provides long-lasting water protection even in submerged conditions or high moisture areas.


Ideal for use on backfilled walls split slab applications, planters, and submerged conditions. Tremco TremProof 250GC is suitable for concrete forms and can also be applied to damp concrete.

Product Specification

  • Cure Time: rapid curing 24 hours
  • Storage Temperature: Store at a temperature above 40°F.
  • Viscosity: Available in three viscosities: self-leveling (SL), roller (R), and trowel.
  • ASTM C Strength: Compliant with ASTM C for tensile strength.

Size Availability

Tremco TremProof 250GC Roller Grade is available in 5-gallon pails.

Complementary Products

For best results and protection, consider using Tremco TremProof 250GC roller grade alongside other Tremco waterproofing systems. For more information, please contact us!


This product can expose you to chemicals, which are known to the State of California to cause cancer and reproductive harm. For more information contact tremco technical services or go to 

Weight 56 lbs
Dimensions 15 × 15 × 18 in