China Breathable Membrane Manufacturers Suppliers Factory - Wholesale Breathable Membrane

Executive Product Overview & Applications

Eastopo supplies a professional-grade portfolio of multi-layer composite breathable membranes designed to provide reliable secondary weather protection while facilitating efficient outward water vapor escape across diverse building envelope assemblies.

Our breathable membrane range combines hydrostatic water resistance, high vapor permeability, tensile mechanical strength, long-term durability, and installation flexibility. It is ideally suited for international construction markets requiring rigorous moisture management, including:

Pitched Roofing Systems: Residential villas, detached houses, townhouses, apartment developments, and commercial roof refurbishments.

Tile & Metal Roofing: Installed as a high-performance secondary barrier beneath clay/concrete tiles, slates, and architectural metal roofing panels.

External Wall Systems: Timber-frame structures, rainscreen cladding assemblies, and modular or prefabricated building envelopes.

Lofts & Attics: Roof and attic spaces requiring strict insulation protection and balanced indoor humidity control.

Lightweight Structures: Garden sheds, storage buildings, garages, workshops, and agricultural outbuildings.

House Wrap & Wall WRB
60-90gsm lightweight SFS house wrap - spunbond nonwoven + microporous film + spunbond nonwoven. Vapour-permeable, water-resistive WRB in 2.74m (9ft) rolls. OEM printing and private label for US and

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Roof Sarking Breathable Roofing Felt
Roof sarking (vapour permeable breathable roofing felt) from a factory-direct manufacturer.3-layer PO build, EN 13859-1 verified by ICR, 60-220gsm, 1.5m x 50m rolls.OEM selvedge printing and

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Breathable Membrane for Shed Roof
Made of a 3-layer composition with a central breathable technology, offers great support with controlling roofspace condensation for shed, log cabins and workspace, whilst acting as a secondary

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Breathable Roofing Membrane
Professional Grade ICR-Verified LR Type Breathable Roofing Membrane.This membrane consists of a 3-layer composition with strong moisture permeability and durability.*High-performance everyday

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Breathable Felt Membrane
Low resistance air-open breathable felt membrane, suitable for pitched roofs. It is the ideal solution to tackle a high risk of condensation forming in the roof space and is particularly suitable for

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Breathable Building Membrane
Breathable building membrane rolls, 60-220 gsm, three-layer PP/PE/PP, for roofs and walls. OEM and private label to distributors worldwide.

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Breathable Loft Membrane
Breathable loft membrane and loft lining rolls - 3-layer PP/PE/PP film build, EN 13859-1 Type LR, ICR-verified, 60-220gsm, Sd 0.02-0.035m. Condensation control for loft conversions and roof spaces.

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Breathable Membrane Under Rafters
Installing a breathable membrane under rafters is one of the most critical steps in creating a durable, energy-efficient building envelope. While traditionally associated with roofing, this

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Comprehensive Application Portfolio

Residential & Commercial Roofing

Pitched Roofs & Tile/Metal Coverings: Installed directly beneath primary roof coverings to intercept wind-driven rain and moisture ingress, protecting the underlying roof deck and insulation while venting trapped structural vapor.
Commercial & Industrial Developments: Specified for office complexes, retail warehouses, hospitality buildings, and light industrial facilities requiring durable secondary weather shielding.

Timber-Frame & Wall Assemblies

External Wall & Rainscreen Systems: Positioned behind external claddings to protect structural framing from exterior moisture while allowing interior vapor diffusion.
Timber-Frame Construction: Essential for mitigating prolonged moisture exposure risks in wood-based structural components.

Roof Sarking Membrane Roll | Eastopo Roof Sarking Breathable Roofing Felt

Specialized & Auxiliary Structures

Core Technical Performance Features

Advanced Water Resistance:

Engineered with high hydrostatic performance and W1-grade options to deliver a dependable liquid water barrier against driving rain and wind-driven moisture.

High Vapor Permeability:

Optimizes building envelope breathability by allowing water vapor to migrate outward efficiently, preventing internal condensation and mold growth.

Superior Mechanical Strength:

Built to withstand demanding construction-site conditions, offering high tensile strength, tear resistance, puncture resistance, and optimal dimensional stability during handling and fixing.

Lightweight & Flexible Format:

Supplied in convenient roll dimensions that simplify transportation, on-site cutting, manual handling, and installation across complex architectural geometries.

Climate Adaptability:

Suitable for diverse global climatic zones—from cold northern regions and humid tropical environments to high-rainfall and wind-exposed coastal areas.

Multi-Layer Functional Structure

Eastopo breathable membranes utilize a sophisticated multi-layer composite architecture tailored to balance liquid protection, vapor transmission, and mechanical durability:

Functional Surface Layer:

Provides primary exterior protection, enhancing UV resistance (selected grades), water repellency, and surface durability.

Breathable Functional Layer:

The core microporous or monolithic layer that actively regulates vapor diffusion while maintaining absolute resistance to liquid water ingress.

Reinforcement & Protective Layer:

Adds structural integrity, boosting tensile strength, tear resistance, puncture tolerance, and overall handling performance during intensive installation phases.

Technical Specifications Reference

Technical Parameter	Specification / Standard Options
Product Structure	Multi-layer functional composite membrane
Base Material	Polyolefin / PE-based polymers (model dependent)
Basis Weight (GSM)	Approx. 80–220 g/m² (customizable)
Sd Value	Approx. 0.02–0.05 m (high vapor diffusion openness)
Water Vapor Transmission	Approx. 1,500 g/m²·24h and above
Water Resistance	Hydrostatic head performance, W1 grade options available
Mechanical Strength	Multiple tensile and tear resistance grades
Temperature Stability	Approx. -40°C to +80°C (selected grades)
Temporary UV Exposure	Selected grades equipped with construction-phase UV resistance
Quality Compliance	Strict batch testing compliant with international standards

Tailored Supply & OEM/ODM Capabilities

Eastopo operates as an export-oriented manufacturing partner built to support international building material supply chains:

Deep Customization (OEM/ODM):

Comprehensive tailoring of GSM, roll width, roll length, mechanical performance grades, and functional multi-layer structures.

Export-Oriented Logistical Support:

Professional handling of sample delivery, container loading supervision, and complete export documentation.

Private Label & Packaging Solutions:

Custom brand logo printing, core tube labeling, waterproof PE film wrapping, barcode integration, customized carton artwork, and palletized export configuration.

Container Optimization & Category Consolidation:

Importers and distributors can streamline logistics by consolidating breathable membranes alongside Eastopo's complementary product ranges (such as PVC Wall & Ceiling Panels, MDF Acoustic Slat Panels, and WPC Wall Panels).

FAQ

Q: What is the fundamental difference between a breathable membrane and a traditional vapor barrier?

A: A breathable membrane is installed on the cold/external side of the insulation to resist external liquid moisture while allowing internal water vapor to escape. Conversely, a vapor barrier is installed on the warm/interior side of the assembly to restrict indoor vapor from entering the building structure.

Q: Can breathable membranes replace primary roof coverings like tiles or metal sheets?

A: No. Breathable membranes function strictly as secondary weather-protection layers and must never be used as a substitute for primary exterior roof coverings.

Q: Are pre-production samples available for evaluation?

A: Yes. Sample rolls and specification swatch kits can be arranged for quality, material handling, and technical evaluation prior to confirming bulk production orders.

Q: What is the minimum order quantity (MOQ) for custom private-label orders?

A: MOQs vary depending on the required GSM, customized roll specifications, and private-label packaging requirements. Please submit your project specifications to our sales team for a formal quotation.

As one of the most professional breathable membrane manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please rest assured to wholesale custom made breathable membrane from our factory. Good service and reasonable price are available.

Breathable Roof Underlay Felt, Breather Membrane For Shed, Breathable Membrane For Walls