Breathable underlay for roofs and walls that balances waterproofing with moisture escape, designed for demanding builds and reliable performance, introduced as ARA CHOICE CROMAR Vent3 Pro Breathable Membrane. Tradespeople and self-builders gain reassurance during wet-weather work thanks to robust construction and certified quality. Is this heavy-duty option the right choice for long-term installations?
⚡ At a Glance
- • Waterproofing Performance: Combines a waterproof barrier with high tensile and tear strength to prevent water ingress
- • Best for: Roofers and self-builders fitting warm and cold roofs and wall underlays
- • Not ideal for: Applications requiring permanent UV exposure beyond three months
BBA certification confirms compliance with industry standards and quality control. Heavyweight construction pairs waterproofing with breathability to suit a wide range of roofing and wall underlay tasks.
Keeps structures dry - with high breathability and waterproofing
High vapour permeability allows moisture vapour to escape from the build-up while a waterproof layer resists wind-driven rain and snow. Superior tensile and tear strength helps preserve the membrane during normal site stresses.
Reduced condensation risk helps timber and insulation stay drier, lowering the chance of rot or mould. Installers benefit from a drier envelope and more predictable drying times.
Handles on-site demands - thanks to heavy-duty tensile and tear strength
Heavyweight construction is formulated to combine superior tensile strength with enhanced tear resistance, supporting mechanical loads and foot traffic during installation. BBA certification evidences independent testing and compliance.
Less likelihood of accidental punctures or damage during fitting, which reduces repair time and waste. Suitable for busy roofs where durability matters.
Allows flexible scheduling - with up to 3 months UV stability
UV-stable composition provides protection against sunlight exposure for up to three months, permitting temporary delays between underlay fitting and final covering. Compatibility with warm and cold roof assemblies supports a range of installation methods.
Installers can leave the underlay exposed for short periods without immediate risk of degradation, easing site scheduling and weather-related hold-ups. Works with different roofing materials for versatile use.
✨ The 4 Key Reasons for ARA CHOICE CROMAR Vent3 Pro Breathable Membrane
- BBA Certification - Confirms compliance with industry standards and independent testing
- Heavy-Duty Construction - Withstands on-site wear, reducing punctures and accidental tears
- High Breathability - Allows moisture vapour to escape, lowering condensation risk in roofs
- UV Stability - Up to three months exposure tolerance, enabling flexible installation timing
📋 Technical Details at a Glance
- Category: Breathable membrane underlay
- Certification: BBA Certified
- Performance: Heavy-duty tensile and tear strength
- Waterproofing: Protects against wind-driven rain and snow
- Breathability: Facilitates moisture vapour escape
❓ Frequently Asked Questions
Q: Is the membrane suitable for both warm and cold roof installations?
A: Yes. Product information specifies suitability for both warm and cold roof installations as well as wall underlay use.
Q: How long can the membrane be exposed to sunlight before covering?
A: Up to three months of UV stability is stated, allowing short-term exposure prior to final covering.
Q: Does the membrane meet recognised industry standards?
A: Yes. BBA certification confirms quality and compliance with industry standards.
🏆 Our Verdict
Suitable for roofers, builders and self-builders who need a robust, breathable underlay for both warm and cold roofs. BBA certification combined with heavyweight construction and measured UV stability makes the membrane a reliable choice for demanding sites. Although initial cost may be higher, long-term durability and reduced repair risk deliver strong value over the life of the roof.
