*Terms and conditions apply
If you would like to discuss this product, or you require a sample, please call 01702 560194. Alternatively, you can use our contact form.
Please note: All cut material is non-returnable unless faulty as these are non-sellable and have been cut to specific requirements.
Zenaseal Black EPDM Rubber Roofing Membrane
- Thickness: 0.75mm, 1.15mm (other thickness options available on request)
- Sheet Size: 1.5m x 20m (up to 6m x 30m available on request)
- Finish: Cloth finish
- Cutting: Standard press-tools
- View installation instructions
This Product is REACH, RoHS, PAH and CE Compliant.

Other grades, colours and finishes are available – subject to minimum batch quantities.
From £28.19 Incl. VATFrom £23.49 Excl. VAT
This product is available for bespoke manufacturing, please choose an option below:
Chemical Resistances
Features:
- 20-year lifespan
- Minimal extra load on roof (specific gravity approx. 1.25kg /m2)
- Wide temperate range (-25°C to +130°C)
- Withstands structure movement (can stretch up to approx 300% without tearing, cracking or splitting)
- Superior waterproofing capabilities compare to conventional EPDM sheets
- Does not deteriorate due to weather, heat, sunlight or oxidation
- Resistant to most acidic & alkaline conditions with a better chemical resistance than alternatives
- Perfect for roofing, wall protection and mining/construction applications
Coruba’s EPDM rubber roofing membrane is a high-quality solution known for its exceptional elasticity, capable of stretching without tearing or cracking, ensuring enduring durability across a spectrum of temperatures.
The installation process is straightforward, guaranteeing both cost-efficiency and durability. Not only does it effectively prevent leaks, but it also enhances insulation and resists the growth of moss and algae.
Crafted to endure both acidic and alkaline conditions, our membrane is a dependable choice for various applications. Its lightweight design minimises the additional roof load, ensuring structural integrity. In comparison to traditional materials such as asphalt and PVC, it outperforms in waterproofing capabilities.
It is suitable for diverse applications, including various roofing types, homes, garages, sheds, storage facilities, green roofs, wall protection, mining, construction, and geo-membranes.
Our EPDM Rubber Roofing Membrane adheres to industry standards, including ASTM D4637 and ASTM 6134, ensuring top-notch quality. With various dimensions available, finding the right fit for your project is easily achievable.
N.B. Available in plain or self-adhesive backed tape (SAB) alternatives. Bespoke sheets and gaskets are available, as well as customised rubber strips. Email your enquiries to sales@coruba.co.uk.
Comparison of Coru146 with other waterproofing techniques
| Properties | Coru146
EPDM Roofing |
PVC Roofing | Modified
Bitumen Roofing |
BUR Roofing
(Bituminous built-up Roofing) |
| UV resistance | E | P-F | F | G |
| Ozone resistance | E | E | F | F |
| High Temperature resistance | E | E | F | F |
| Cold Crack | E | F-G | P | P |
| Resistance to Plasticiser Migration | E | F-G | P | P |
| Dimensional | E | P-F | F | F |
| Install over existing roof | YES | YES | YES | NO |
| NA = Not Applicable, E = Excellent, G = Good, F = Fair, P = Poor | ||||
|
PROPERTIES |
TEST METHOD | VALUES FPS UNITS | TEST METHOD | VALUES METRIC UNITS |
| COLOUR | VISUAL | BLACK | BLACK | |
| DENSITY | 1.10 | 1.10 | ||
| HARDNESS | ASTM D 2240 | 65 ± 10 SH A | DIN 53505 | 65 ± 10 SH A |
| TENSILE STRENGTH ( MIN ) | ASTM D 412 | 90KG/CM | DIN 53504 | 1280.7 PSI |
| ELONGATION AT BREAK ( MIN ) | ASTM D 412 | 300% | DIN 53504 | 300% |
| ABRASION RESISTANCE ( MAX ) | ASTM D5963 | 250 MM | DIN 150 4649 | 250 MM |
| POLYMER CONTENT (%) | 100 | 100 | ||
| COMPRESSION SET (70 C/24 HRS) (MAX) | ASTM D395 METHOD B | 24% | DIN 180 815 | 24% |
| TEAR RESISTANCE (ANGULAR) MIN | ASTM D624 METHOD C | 30 KG/CM | DIN 53506 | 167.97 LBS/INCH |
| RESISTANCE TO HEAT AGEING | ||||
| PROPERTIES AFTER 166 HRS @ 115C | ASTM D 573 | |||
| TENSILE STRENGTH MIN. | ASTM D 412 | 85KGS. /CM2 | DIN 53505 | 1209.55 PSI |
| ELONGATION ( % ) | ASTM D 412 | 210 | DIN 53504 | 210 |
| LINEAR DIMENSIONAL CHANGE MAX. % | ASTM D 1204 | +/-1 | ||
| BRITTLENESS TEMPERATURE C | ASTM D 746 | -45 | ||
| RESISTANCE WATER ABSORPTION, AFTER 166HRS. ° IMMERSION @ 70 C | ||||
| % CHANGE IN MASS | ASTM D 471 | 4.0 | DIN ISO 1817 | 4.0 |
| WATER VAPOR PERMEABILITY MAX. PER- MILLS | ASTM E 96 | 3.5 | ||
| TEMPERATURE RESISTANCE | -30 TO +120°C | |||
Comparison of Coru146 with other waterproofing techniques
| Properties | Coru146
EPDM Roofing |
PVC Roofing | Modified
Bitumen Roofing |
BUR Roofing
(Bituminous built-up Roofing) |
| UV resistance | E | P-F | F | G |
| Ozone resistance | E | E | F | F |
| High Temperature resistance | E | E | F | F |
| Cold Crack | E | F-G | P | P |
| Resistance to Plasticiser Migration | E | F-G | P | P |
| Dimensional | E | P-F | F | F |
| Install over existing roof | YES | YES | YES | NO |
| NA = Not Applicable, E = Excellent, G = Good, F = Fair, P = Poor | ||||
|
PROPERTIES |
TEST METHOD | VALUES FPS UNITS | TEST METHOD | VALUES METRIC UNITS |
| COLOUR | VISUAL | BLACK | BLACK | |
| DENSITY | 1.10 | 1.10 | ||
| HARDNESS | ASTM D 2240 | 65 ± 10 SH A | DIN 53505 | 65 ± 10 SH A |
| TENSILE STRENGTH ( MIN ) | ASTM D 412 | 90KG/CM | DIN 53504 | 1280.7 PSI |
| ELONGATION AT BREAK ( MIN ) | ASTM D 412 | 300% | DIN 53504 | 300% |
| ABRASION RESISTANCE ( MAX ) | ASTM D5963 | 250 MM | DIN 150 4649 | 250 MM |
| POLYMER CONTENT (%) | 100 | 100 | ||
| COMPRESSION SET (70 C/24 HRS) (MAX) | ASTM D395 METHOD B | 24% | DIN 180 815 | 24% |
| TEAR RESISTANCE (ANGULAR) MIN | ASTM D624 METHOD C | 30 KG/CM | DIN 53506 | 167.97 LBS/INCH |
| RESISTANCE TO HEAT AGEING | ||||
| PROPERTIES AFTER 166 HRS @ 115C | ASTM D 573 | |||
| TENSILE STRENGTH MIN. | ASTM D 412 | 85KGS. /CM2 | DIN 53505 | 1209.55 PSI |
| ELONGATION ( % ) | ASTM D 412 | 210 | DIN 53504 | 210 |
| LINEAR DIMENSIONAL CHANGE MAX. % | ASTM D 1204 | +/-1 | ||
| BRITTLENESS TEMPERATURE C | ASTM D 746 | -45 | ||
| RESISTANCE WATER ABSORPTION, AFTER 166HRS. ° IMMERSION @ 70 C | ||||
| % CHANGE IN MASS | ASTM D 471 | 4.0 | DIN ISO 1817 | 4.0 |
| WATER VAPOR PERMEABILITY MAX. PER- MILLS | ASTM E 96 | 3.5 | ||
| TEMPERATURE RESISTANCE | -30 TO +120°C | |||





