Breathable Roofing Felt

Supplied with a full lineup of supporting products such as vapour barriers, sealing tapes and anti-condensation felts, House Dress Jinbo breathable roofing felt membrane is an energy-saving and moisture-resistant functional material specially designed for building walls and roofs. Independently developed and produced by Xiongan Xiashi Packing Co., Ltd., it has been adopted in multiple landmark projects including large sports venues, BASF production plants and Starbucks factories.

Product specification

Our Advantages

Our breathable roofing felt brings multiple competitive strengths:It features professional microporous structure to deliver reliable waterproofing and vapor permeability, with superior airtight performance for building energy conservation. Excellent weather resistance and anti-aging properties guarantee long-term service stability in various climates.We can supply a complete system solution, including vapour control layers, anti-condensation felts and matching sealing accessories for one-stop procurement. Full official test reports are available to meet international certification standards for overseas projects.Backed by our own manufacturing factory, our products have been adopted in many iconic engineering projects, and we can offer customized sizes and printed logos as well as professional construction guidance.

What is Breathable Roofing felt?

Commonly referred to as building breathable underlay or breathable roofing felt , a breathable roofing felt is a professional functional material specially installed on the outer side of thermal insulation layers for pitched roofs, flat roofs and external wall systems.

Manufactured with engineered microporous structure, it works on a physical principle: liquid rain droplets are blocked from penetrating the membrane under surface tension, while tiny water vapor molecules trapped inside wall or roof cavities can pass through freely to the exterior. This unique feature prevents rainwater infiltration whilst actively releasing trapped moisture inside the building envelope.

When properly installed, it effectively eliminates internal condensation buildup, inhibits mold and mildew formation on insulation and wall substrates, and avoids rust and corrosion on steel beams, purlins and metal roof components. Besides moisture management, it improves overall building airtightness, reduces air leakage, lowers heating and cooling energy consumption throughout the year, and protects thermal insulation performance from damp degradation over decades.

Breathable roofing felt is often used in conjunction with a vapour control layer fitted on the inner side of insulation to form a complete, balanced vapour management system. Widely applicable to metal roofing, tile roofing, steel-frame walls, stone curtain walls and external render walls, it is an essential component for durable, energy-efficient modern construction worldwide.

Specific application examples

Our breathable roofing felt underlay membrane has been widely applied in various landmark construction jobs, delivering proven energy-saving and damp-proof effects across all scenarios.

1. Large Sports Venue Metal Roof (12,000 ㎡)

We adopted a matched dual-film system pairing breathable membrane with vapor barrier for this metal roof. The combo stops cavity condensation and water buildup during long-term use, slowing steel structural corrosion. It cuts building heating and cooling power use by 40% while keeping consistent insulation performance year-round.

2. High-Humidity Factory Walls for BASF & Starbucks (8,600 ㎡)

This industrial site runs under constant high moisture conditions. Our breathable membrane keeps wall internal humidity under 60% to fully avoid mold growth. The air-layer design boosts insulation efficiency by 43%, greatly lowering daily air conditioning running expenses for plant operators.

3. Australian Light Steel Villa Project (360 rolls, Australia Standard Compliant)

We supplied 360 rolls of membrane that meets local Australian building codes. The material holds up well against strong UV radiation and freezing temperatures suited to local weather. It cuts overall building energy loss by 35% and trims on-site construction waste by 15% to help builders control project costs.

4. Commercial Complex Stone Curtain Wall (7,200 ㎡)

Installed on the building’s exterior stone facade, the membrane withstands 1000mm water pressure for two hours with zero seepage, blocking rain from seeping into wall cavities. It reduces enclosure heat loss by 30% and slashes long-term facade maintenance fees by 40% for commercial property owners.

5. Residential Tile Sloped Roof (15,000 ㎡)

The dual-membrane set of breathable underlay and vapor barrier has run for years without roof leakage or inner condensation. It maintains steady indoor temperature all seasons, fully showcasing the product’s strengths in damp blocking, anti-corrosion, energy saving and extending the whole building’s service life.

Notes

Place breathable roofing felt outside insulation and vapour control layer inside. Seal all overlaps with butyl tape.

Fully seal details like openings, pipes and corners, and repair membrane damages in time.

Fasten with nails and washers; do not puncture the membrane directly. Install with proper tension.

Cover the membrane quickly to avoid long-term UV exposure and keep away from high-temperature welding work.