Self-adhesive Butyl Waterproofing Sheet
Self-adhesive waterproof sheet for building exterior walls, rooftops, and underground structures. Provides a continuous moisture barrier with exceptional peel strength and durability.
Key Specifications
| Width | 1,000mm ~ (Custom) |
| Thickness | 1mm ~ 2mm |
| Peel Strength | ≥ 10 N/25mm |
| Operating Temp | -40°C to +120°C |
| Roll Length | 10m / 20m |
Product Overview
Garmy Butyl Sheet is a large-format self-adhesive waterproofing membrane designed for broad-area coverage in construction applications. Its dual-layer structure combines a butyl rubber adhesive layer with a protective backing for enhanced mechanical strength. Ideal for rooftop waterproofing, below-grade moisture barriers, and exterior wall vapor control.
Key Features
- ✓Self-adhesive butyl adhesive layer + functional HDPE film
- ✓Full-surface adhesion without mechanical fasteners
- ✓Cold-applied — no torch or heat required
- ✓Excellent elongation for crack-bridging capability
- ✓Resistant to root penetration for green roof applications
- ✓UV-stabilized top surface option available
- ✓Compatible with concrete, metal, and wood substrates
- ✓KS F 4935 compliant
Technical Specifications
All specifications tested per ASTM / KS standards. Custom formulations available upon request.
| Application | Specific Gravity | Heat Resistance | Cold Resistance |
|---|---|---|---|
| Building structures (rooftops, underground parking, upper slabs) / Civil structures (underpasses, subways, utility tunnels) / Other structures requiring waterproofing (metal, wood, panel) | 1.40 – 1.65 | 120°C | -40°C |
Applicable Standards
Relevant test methods and compliance standards by region.
| Region | Standards |
|---|---|
| US |
|
| AU / NZ |
|
| EU |
|
| UK |
|
| Japan |
|
Industry Applications
Self-adhesive Butyl Waterproofing Sheet is trusted across major industries for its versatility and reliable performance.
Construction
Full-surface waterproofing membrane for rooftops, basements, and building envelopes.
- •Flat roof waterproofing
- •Below-grade foundation walls
- •Exterior wall moisture barrier
- •Green roof base layer
- •Tunnel lining waterproofing
Quality Certifications
All Garmy products are manufactured under internationally recognized quality management systems.
Related Technical Content
Learn more about this product through our technical articles and guides.
Butyl Tape for Typhoon and Heavy Rain Waterproofing in Japan
Why Japan's typhoon season and wind-driven rain demand a self-adhesive butyl sealing material with strong initial tack and long-term weather resistance, and how Garmy butyl tape and sheet address vulnerable joint locations.
Sealing Movement Joints in Earthquake-Resistant Buildings with Butyl Tape
Why joints in seismic-resistant and seismic-isolation buildings need a sealing material that stays permanently flexible rather than fully curing, and how butyl tape's plastic-elastic flow suits repeated structural movement without losing its watertight seal.
Butyl Tape for Pole Barn & Post-Frame Building Sealing Guide
A guide to sealing pole barns and post-frame buildings with butyl tape — key sealing points at eave, ridge, trim, and base panels, and how to select tape for agricultural and light commercial post-frame construction.
Related Products
Other solutions from our butyl rubber product line
Butyl Compound
High-performance waterproof sealing raw material. Our flagship butyl rubber compound is formulated for superior adhesion, flexibility, and weather resistance across demanding industrial environments.
View Details →
Butyl Tape
Self-adhesive waterproof sealing tape for window frames, roofing joints, and electronics insulation. Long-term UV and chemical resistance for demanding environments.
View Details →