
Description for Breathable Membrane



PERFECT breathable membrane
Perfect waterproof breathable membrane (breathing paper) is a new type of polymer waterproof material. In terms of the production process, the technical requirements of the waterproof breathable membrane are much higher than that of general waterproof materials; at the same time, from the quality point of view, the waterproof breathable membrane also has functional characteristics that other waterproof materials do not have.
Perfect breathable membrane series (PECO, PMAX, PVEK, P-Taped, P-Reinforced, P-Radiant) have excellent performance on waterproof, vapor permeability and UV resistance, which are widely used in construction as roof underlayment and wall membrane. They can prevent duct, water drop from our side, but can allow air to pass through. It is mainly for European, North American and South American markets etc.
Features for Breathable Membrane PVEK
High temperature resistance - the working temperature is up to 250 ℃.
Low temperature resistance - good mechanical toughness; 5% elongation can be maintained even when the temperature drops to -196°C.
Corrosion resistance - inert to most chemicals and solvents, strong acid and alkali resistance, water and various organic solvents.
Weather Resistant - Has the best aging life of any plastic.
High Lubrication—The lowest coefficient of friction among solid materials.
Non-stick - is the smallest surface tension in a solid material that does not stick to anything.
Non-toxic - with physiological inertness, as artificial blood vessels and organs for long-term implantation in the body without adverse reactions.
UV resistant Slip resistance Waterproof Easy install Stronger than Extreme working
asphalt felt environment
Specifications
Product grammage | Standards | PVEK - CLASSIC | PVEK - ENHANCED |
Weight | EN 1848-2 | 110 gsm | 180 gsm |
Vapor permeability (g/m2/24h) | ASTM E96-2000 | >1500mm | >500mm |
Head of Water | EN 20811 | >1000mm | >1500mm |
Tensile strength MD/CD (N/50mm) | EN12311-1 | 495/210 | 520/234 |
Tearing strength MD/CD (N) | EN12310-1 | 87/61 | 121/100 |
Resistance to UV (Month) | ASTM G154 | 4 | 4 |
Reaction to fire | - | W1 | W1 |
Roll size | EN184802 | 1.5 * 50 m | 1.5 * 50 m |
Install for Breathable Membrane
First, the curtain wall construction process:
1. Process flow of ceramic panel curtain wall
Measuring and laying out → installation of vertical keel members → beam installation, calibration, and fixation → interlayer fire blocking, thermal insulation rock wool, waterproof and breathable membrane installation → concealed engineering acceptance → panel installation → injection of sealant → cleaning, finishing → acceptance.
2. Process flow of glass curtain wall
Measurement and payout → skeleton installation → qualified inspection → interlayer fire blocking installation → glass installation → glue injection → cleaning → acceptance.
3. Process flow of aluminum curtain wall
Pay-off → rectification of embedded parts, filling → connecting parts positioning and installation → steel vertical keel installation → horizontal keel positioning and installation → interlayer fire blocking, thermal insulation rock wool, waterproof and breathable membrane installation → aluminum plate installation → cleaning and acceptance.
4. Process flow of stone curtain wall
Measuring and laying out → installation of vertical keel members → beam installation, calibration, and fixation → interlayer fire blocking, thermal insulation rock wool, waterproof and breathable membrane installation → concealed engineering acceptance → panel installation → injection of sealant → cleaning, finishing → acceptance.


Second, the main points of waterproof breathable membrane construction:
1. Construction preparation
(1) The base wall should meet the requirements of"Concrete Structure Engineering Construction Quality Acceptance Specification"(GB 50204-2002) and"Masonry Engineering Construction Quality Acceptance Specification"(GB 50203-2002) and the corresponding base wall quality acceptance specifications. Before the thermal insulation construction, the confirmation of the structural acceptance should be done in conjunction with the relevant departments.
(2) The railings on the outer wall, the rain pipe brackets, the lamp brackets on the outer facade, etc. have been installed, and the influence of the thickness of the thermal insulation system should be considered.
(3) Reinforcement heads and protrusions on concrete beams or walls have been removed.
(4) The deformation joints of the main structure should be handled in advance.
(5) The construction plan shall be formulated according to the project quantity, construction site and construction period requirements. The model shall be used first, and the fixed consumption shall be determined by the model, and the material consumption shall be determined by Party A, Party B and the material supplier through negotiation.
(6) After entering the site, the waterproof and breathable membrane material must have the factory certificate and inspection report. After entering the site, the re-test is required for installation and construction.
2. System waterproofing and treatment of special parts
(1) When encountering the opening of the window and door, the length and width of the board shall be determined according to the length and width of the rock wool board on site according to the wall part.
(2) Waterproof and moisture-proof: Each rock wool board is packaged in a small plastic bag. Before installation, check whether the plastic bag is damaged. The part of the rock wool board that is exposed at the corner of the rock wool board should be firmly pasted with aluminum foil strips of the same material as the surface layer. ; The silicone sealant must be tight at the stone joints.
(3) After the fireproof and non-combustible rock wool is laid, check the anchorage point, flatness of the rock wool board and the bonding quality between the connected plates.
Service
We strictly implement the"After-sales Service Commitment Letter". We firmly believe that high-quality, systematic, comprehensive, and fast service is the foundation of business development. After years of continuous exploration and progress, we have formed a"customer-centric, quality-oriented enterprise""One life"service concept. With the goal of establishing a domestic first-class service enterprise with strict management and advanced technology, it has formulated a quality policy of"standardized management system, strict process control, guaranteed roof underlayments product quality, and achieved customer satisfaction", and adhered to the principle of"customer first". Build a good sales service system to provide customers with high-quality pre-sales, in-sales, and after-sales services!
1. Pre-sale service commitment
Provide professional roof underlayments consultation. Quickly answer your professional technical questions about the roof underlayments and provide detailed information about the roof underlayments.
Provide a reasonable quote for the roof underlayments.
Provide inspection reception. We will receive your inspection at any time and try our best to provide various convenient conditions for your inspection work.
2. Service Commitment in Sale
Consciously abide by the provisions of the Contract Law to ensure the smooth performance of the roof underlayments contract and technical agreement.
We will try our best to provide you with high-quality roof underlayments products on time and in quantity, and use the best transportation method to ensure that the roof underlayments you receive is intact.
Actively communicate with users, respect user arrangements, and provide users with thoughtful technical support.
Regardless of the size of the roof underlayments contract, all customers are fair in terms of roof underlayments prices and services.
3. After-sales service commitment
We will provide relevant roof underlayments technical training and technical materials in accordance with customer requirements.
The roof underlayments product has quality problems and life-long maintenance. If there is a contract, please follow the contract.
Factory Equipment for Breathable Membrane

Drawbench Knitter Loom Machine Printing Machine
Lab Testing Machine for Breathable Membrane
Tensile Strength Brust Strength Weight UV Resistance
FAQ for Breathable Membrane
1) Is this product waterproof?
Yes, this breathable membrane is waterproof.
2) Can it be used as house wrap?
Yes, PERFECT breathable membrane can be used for house wrap well.
3) Is the item is self adhesive?
No, PERFECT breathable membrane is not self adhesive.
4) Can I use it as underlayment on a tile roofing?
No. PERFECT breathable membrane are not suitable for tile roofing.
5) Can it be installed over asphalt shingles with a metal roof on top?
Yes. Sure.