POLYTECH Standard Breathable Membrane
POLYTECH waterproof membrane is a kind of roof deck protection, which can protect the construction structure from being eroded by wind and rain and strengthen the gas tightness and water tightness as well as boast good breath-ability which expels water vapour out of construction, thus avoiding mould and condensation.
Product Structure
POLYTECH Standard breathable membrane is a three layers membrane. Thermal laminated by non woven PP + waterproof and vapour permeable membrane + non woven PP.
Specifications
- Weight: 80gsm/m² to 200gsm/m²
- Roll Width: 1m, 1.5m, 3m
- Roll Length: 50m or jumbo roll
- Water Tightness: 200CM to 350CM
- UV Resistance: 3-4 months
- Fire Retardant: E/B2
Characteristics and Function
- Excellent Performance: Water resistance, high vapour permeability, UV resistance, high tensile strength and anti tearing
- 100% Recycled Material: Environmentally friendly production
- Water Tightness: Prominent waterproof performance wraps buildings tightly, protecting from water vapor and rain corrosion
- Permeability: Allows water vapour inside insulation systems to exhaust, solving condensation problems
- Reduce Construction Cost: Eliminates need for additional waterproofing materials on top of insulation systems
Application
Breathable membrane is placed under the exterior roof and its primary function is to work as a shield that protects the thermal insulation material and the building structure from the destruction of the weather.
Technical Specifications
Standard Breathable Membrane
| Weight | 80gsm | 90gsm | 100gsm | 110gsm | 130gsm | 150gsm | 180gsm | 200gsm |
|---|---|---|---|---|---|---|---|---|
| Roll Size | Standard 1.5mX50m, can be customized | |||||||
| Tensile Strength(EN12311-1) | 110/90N | 130/90N | 150/110N | 170/120N | 190/140N | 240/180N | 290/220N | 350/270N |
| Nail Tearing(EN12311-1) | 60/70N | 70/80N | 90/100N | 120/130N | 140/150N | 160/180N | 190/200N | 210/220N |
| Elongation(EN12311-1) | 70/90% | 70/90% | 70/90% | 80/100% | 90/110% | 90/110% | 100/120% | 110/140% |
| Hydrostatic Head(EN20811) | 200CM | 200CM | 210CM | 230CM | 250CM | 270CM | 300CM | 350CM |
| Moisture Vapor Transmission(BS3117) | 2600 g/24h.m² |
2500 g/24h.m² |
2300 g/24h.m² |
2200 g/24h.m2 |
2100 g/24h.m2 |
2000 g/24h.m2 |
1900 g/24h.m2 |
1800 g/24h.m2 |
| Water Tightness(EN1928) | W1 | W1 | W1 | W1 | W1 | W1 | W1 | W1 |
| Fire Retardant(EN13501-1) | E | E | E | E | E | E | B2 | B2 |
| UV Resistance | 3 months | 3 months | 3 months | 4 months | 4 months | 4 months | 4 months | 4 months |
Besides Standard Breathable Membrane, POLYTECH also developed two different breathable membranes, their structure and the appearance are the same as standard breathable membrane, just their breath ability is different caused by different special functional film inside of the membrane(the middle layer).
Low Perm Membrane
Low Perm Breathable Membrane is strong water-resistant, wind-proof, it is suitable product used to wrap the wall to protect the insulation layers. It is very good to used to some area where moisture damp of roof is not so serious, while wind is strongly.
| Weight | 80gsm | 90gsm | 100gsm | 110gsm | 130gsm | 150gsm | 180gsm | 200gsm |
|---|---|---|---|---|---|---|---|---|
| Hydro static Head(EN20811) | 400CM | 400CM | 440CM | 460CM | 500CM | 500CM | 500CM | 500CM |
| Moisture Vapor Transmission(BS3117) | 300 g/24h.m2 |
300 g/24h.m2 |
280 g/24h.m2 |
280 g/24h.m2 |
250 g/24h.m2 |
250 g/24h.m2 |
200 g/24h.m2 |
200 g/24h.m2 |
Super Permeable Membrane
Super Permeable Membrane has a very special functional film inside; this membrane can make the moisture to expel in a short time, and also keeping the inner structure always dry.Even thick membrane also has good water-resistant ability, it is very good to used for rainy area, fast vapor evaporation will not allow any mould to be grown at all.
| Weight | 100gsm | 110gsm | 130gsm | 150gsm | 180gsm | 200gsm | 220gsm | 250gsm |
|---|---|---|---|---|---|---|---|---|
| Hydro static Head(EN20811) | 120CM | 120CM | 140CM | 140CM | 160CM | 160CM | 180CM | 200CM |
| Moisture Vapor Transmission(BS3117) | 3600 g/24h.m2 |
3600 g/24h.m2 |
3500 g/24h.m2 |
3500 g/24h.m2 |
3300 g/24h.m2 |
3300 g/24h.m2 |
3200 g/24h.m2 |
3000 g/24h.m2 |
