Customizable Logo and Size Wall House Wrap Synthetic Roofing Underlayment Breathable Membrane Roof Waterproof

• Customization: Available
• Certification: CE, ISO
• Thickness: 0.3mm-0.6mm
• Type: Waterproof Menbrane
• Material: PP+PE
• Packing: Transparent Bag or Heat Shrink Film
• Transport Package: HDPE Trasparent Bag
• Specification: 1.5*50
• Trademark: KIGNWAY
• Origin: China
• Production Capacity: 40 Containers

Product Description

Ddescription

Roofing underlay is a crucial component of any roof system, providing multiple essential functions to enhance the performance and longevity of the roof. Installing roofing underlay helps to reduce the likelihood of costly repairs over time. Acting as a secondary barrier beneath the outer roofing material, underlay offers critical protection against the elements. If the roof covering is damaged, cracked, or displaced, the underlay serves as a backup defence, preventing wind-driven rain, snow, or moisture from penetrating the roof structure. In addition to weather resistance, roofing underlay safeguards the roof deck from exposure to direct sunlight, reducing the risk of warping or material degradation. It also helps control heat transfer, improving the roof's energy efficiency by adding a layer of insulation. This contributes to a more comfortable and energy-efficient home or building. KINGWAY's roofing underlay systems provide enhanced durability, with features such as tear resistance to ensure long-lasting performance, even under challenging conditions. Their ease of installation makes them a practical choice for contractors, while improved breathability minimises condensation, reducing the risk of mould or dampness within the roof structure.

ducing the risk of mould or dampness within the roof structure.

Procduct	Breathable roofing membrane
Weight	70g-220g
Width	1.5m; 3.2m or customized
Length	50m or customized
Colour	customized
Resistance to water penetration	W1
SD	0.02

Packing & Delivery

Company Name

Nantong Kingway Complex Material CO., Ltd (Nantong Hekway Building Material CO., Ltd) is a leading professional manufacturer in China, which locates in Haian State-grade Development Zone, Nantong City, Jiangsu Province, nearby Shanghai. We have advanced production lines with the technology from Italy and Germany, which are applied to nonwoven products, film lamination, roofing materials, disposable medical products, packaging materials and so on. Main products: Nonwoven fabric , SMS, SMMS and manufactured products Film or foil laminated products Roofing membrane, flooring underlay PE woven fabric, PE tarpaulin, vapor barrier Greenhouse We not only have first-class processing line, but have first-grade quality management. We have been qualified by ISO9001 (quality) and CE, this system can supply active way to guarantee the quality. We have exported to many countries, such as Canada, USA, Chile, Argentina, New Zealand, Australia, Malaysia, Japan, Ukraine, Latvia, Slovenia, Slovakia, Spain, CZ, Russia, Croatia, Bulgaria, Romania, Italy, UK, Germany, Greece and so on. With a group of excellent senior management and hi-tech R& D personnel and our skilled workers, we can supply you the goods with competitive prices and better quality. We look forward to establish friendly and long term relationship with you in the near future.

FAQS

1. What is the difference between breathable and non-breathable roofing felt?
Non-breathable felt acts as a complete barrier and requires ventilation below to prevent condensation. Breathable membranes contain a microporous film that allows moisture vapour to escape while still repelling water.

2. Do I still need ventilation when using a breathable membrane?
Breathable membranes greatly reduce condensation risk, but most roofs still require some ventilation at the eaves and ridge to meet building regulations and manage residual moisture.

3. How long will a breathable membrane last?
When properly installed and protected by the roof covering, breathable membranes can last for several decades. Their lifespan may be reduced by prolonged UV exposure, incorrect fixing or mechanical damage, so always follow the manufacturer's instructions.

4. What weight of membrane should I choose?
Lightweight membranes (100–120 gsm) suit sheltered domestic roofs, mid-weight options (130–160 gsm) are ideal for standard homes and extensions, and heavy-duty membranes (160 gsm+) are best for exposed or commercial settings.

5. Which way up do I lay a breathable membrane?
Most membranes have a printed or darker side that should face upwards during installation. This side offers better UV resistance. However, since most are vapour-open on both sides, performance is not significantly affected if installed the other way up.