EPDM Rubber Waterproof Membrane | High-elastic & Weather-resistant Waterproofing for Roof & Basement
1. Product Overview
This EPDM waterproof membrane takes EPDM rubber as the main raw material. We add multiple functional additives during production. It goes through internal mixing, extrusion and high-temperature vulcanization processes. It is a high-performance elastic waterproof material.This membrane has good resistance to ozone, ultraviolet ray and aging. It can work normally in different temperatures. It has high elasticity and high stretching rate. It can fit shape changes of building base layers well. It keeps stable performance even after long-time outdoor exposure.
It is widely used for roof waterproofing, basement waterproofing, subway tunnel waterproofing and water tank anti-seepage projects. It supports both exposed construction and hidden construction. It is a long-lasting and common waterproof material for construction industry.
2. Technical Specifications
Executive Standard: GB 18173.1-2012
Available Thickness: 1.2mm / 1.5mm / 2.0mm
Standard Size: Width: 1.2m / 1.5m; Length: 20m
Tensile Strength: ≥7.5 MPa
Elongation at Break: ≥500%
Temperature Resistance: Long-term stable use from -40℃ to 90℃; short-term heat resistance can reach 120℃
Tear Strength: ≥25 kN/m (right-angle tear test)
Aging Resistance: Tested following GB/T 18244 accelerated aging standard. Its tensile strength retention rate is above 80%, and elongation retention rate is above 70%. It is suitable for long-term outdoor exposed use.
Service Life: More than 25 years for exposed outdoor use; longer service life for hidden waterproof projects
Product Certification
We can provide official inspection reports issued by national building materials testing center to meet domestic project acceptance demands. We can also offer customized export compliance documents according to customer needs.
3. Core Product Advantages
Great weather and aging resistance for long outdoor use
EPDM rubber has stable molecular structure. It can resist ozone and ultraviolet ray damage naturally. It can stand long-time sunlight exposure, rain washing and big temperature changes between day and night. It will not turn hard, generate powder or crack after long outdoor use. It keeps good waterproof effect all the time and cuts later maintenance cost.
High elasticity and stretchability to fit base layer changes
This membrane has good rebound performance and stretching ability. It can adapt to base layer displacement caused by building settlement, thermal expansion and slight structural shaking. It avoids crack and peeling of waterproof layers. It fits irregular roof surfaces and building bases with large shape changes perfectly.
Stable performance in wide temperature range, fit all climates
It remains tough and soft at ultra-low temperature, and will not crack in cold northern areas. It will not flow or bulge under long-time high temperature. It keeps stable construction and use performance in all seasons across different regions.
Stable chemical property, resist acid and alkali corrosion
This material has inactive chemical property. It can resist corrosion from underground water, saline-alkali soil and domestic sewage. It is suitable for waterproof projects with mild corrosive environment, such as basements, chemical auxiliary buildings and water storage pools.
Easy construction and reliable lap joint sealing
The membrane is soft, so workers can cut it freely on site. It adapts to various construction sites well. We use special matched adhesive for joint bonding. All lap joints can stick tightly and form an integrated seamless waterproof layer. It supports fast construction for large roof and underground projects.
4. Application Scenarios
Building Roofs: Exposed waterproof construction for flat roofs and sloped roofs of factories, stadiums and residential buildings
Underground Projects: Overall waterproofing for basement floors, side walls, civil air defense projects and underground parking garages
Municipal Infrastructure: Anti-leakage waterproofing for subways, tunnels and urban comprehensive pipe corridors
Water Storage Structures: Anti-seepage and anti-corrosion treatment for fire pools, landscape water pools and sewage treatment pools
Roof Renovation: Replace old waterproof layers and repair partial leakage points on old roofs
5. Construction Guidelines
Base Layer Treatment: Keep the base layer flat, firm and dry. Remove sharp corners and dust to avoid membrane piercing.
Lap Joint Standard: Both longitudinal and transverse lap width shall not be less than 100mm. Spread special adhesive evenly on lap surfaces without blank areas. Press the bonded joints tightly with pressure rollers to ensure full sealing.
Construction Environment: The best construction temperature is 5℃ to 35℃. Do not carry out outdoor construction on rainy, foggy, frosty and windy days.
Finished Product Protection: Avoid hard object impact and heavy vehicle rolling after construction. Lay protective layers in time once waterproof construction is finished.
6. FAQ
Q1: Can EPDM waterproof membrane be used for long-term outdoor exposed construction?
A1: Yes. This membrane is specially made for exposed roof projects. Raw EPDM rubber has strong anti-ultraviolet and anti-aging ability. It can be used outdoors directly for a long time without extra protective layers.
Q2: Can we construct this membrane in cold winter in northern China?
A2: Yes. The membrane still keeps soft elasticity at -40℃ and will not become brittle or crack. It meets winter construction requirements in cold northern areas.
Q3: Will lap joints bonded by adhesive leak water?
A3: If workers follow standard construction steps and use matched adhesive, lap joints can bond closely with the membrane. The bonding strength is high and the sealing effect is good. The leakage risk is very low under normal construction conditions.
7. Product Summary
This EPDM waterproof membrane meets national standard GB 18173.1-2012. It has four core advantages: high elasticity, strong weather resistance, wide temperature adaptability and acid and alkali corrosion resistance. It can be used for both exposed roof projects and hidden underground waterproof projects. It is easy to construct, with stable overall performance and long service life. It is a cost-effective durable waterproof material for civil buildings, industrial factories and municipal engineering projects.
