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Cromar Vent 3 Light Breathable Roofing Underlay - 1 x 50m

Cromar Vent 3 Light Breathable Roofing Underlay - 1 x 50m

Vent3Light is a triple layer fabric, high performance breather membrane, made from high tensile sp...

Best current price£29.99from OnBuy.com

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Vent 3 Light Lightweight Performance Breatheable Roofing Underlay 1M X 50M 5036684003834

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Cromar Building Products Grey Vent 3 Light 1 X 50M Breathable Roofing Underlay, 1 M

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OnBuy.comVent 3 Light Lightweight Performance Breatheable Roofing Underlay 1M X 50M 5036684003834
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£29.99
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AmazonCromar Building Products Grey Vent 3 Light 1 X 50M Breathable Roofing Underlay, 1 M
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£32.44
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Product Information

Full details

This guide is for builders, roofers, and DIY enthusiasts looking to understand and effectively use the Cromar Vent 3 Light Breathable Roofing Underlay. The key benefit is its ability to provide a breathable, waterproof layer, protecting your roofing structure from the elements. A key consideration is proper installation to ensure optimal performance. This guide covers key features, performance, setup, and troubleshooting to help you get the most out of your Cromar Vent 3 Light underlay.

All features

Model Part NumberTV3L/50
BrandCromar Building Products

Extended Product Information

FAQs

What is the correct overlap for the underlay?

Refer to the manufacturer's guidelines, typically around 100mm for horizontal overlaps.

Can I use this underlay with any type of tile?

Yes, Cromar Vent 3 Light is compatible with a wide range of tile types.

How do I store the underlay?

Store the underlay in a cool, dry place, away from direct sunlight.

What is the purpose of the breathable membrane?

The breathable membrane allows water vapor to escape, reducing condensation and moisture build-up in the roof structure.

Is this product BBA certified?

Yes, Cromar Vent 3 Light is BBA certified, ensuring it meets industry standards.

What fixings should I use?

Use staples or nails designed for roofing underlay, ensuring they are compatible with your roof deck material.

Troubleshooting

Underlay tears during installation.

Ensure the roof deck is smooth and free from sharp edges. Use proper staples or nails to fix, being careful not to over-tension.

Water leaks through the underlay.

Check for any tears or punctures in the underlay. Ensure that all overlaps are correctly sealed and that fixings are properly installed.

Pros and Cons

Pros

  • Excellent breathability reduces the risk of condensation.
  • Provides a reliable waterproof barrier.
  • High tensile strength ensures durability.
  • Lightweight and easy to handle.
  • BBA certified, assuring quality.

Cons

  • Requires careful installation to avoid damage.
  • Can be susceptible to damage if exposed to prolonged UV.
  • May require specific fixings, depending on the roofing system.

Setup, Compatibility & Care

Setup

  1. Unroll the Cromar Vent 3 Light underlay on the roof deck, ensuring it is smooth and free from wrinkles.
  2. Overlap the sheets according to the manufacturer's recommendations (usually 100mm on overlaps).
  3. Secure the underlay using appropriate fixings, such as staples or nails, ensuring a tight seal.

Compatibility

  • Suitable for use with various roofing materials, including tiles and slates.
  • Compatible with most roof structures, including timber frame and rafter roofs.

Care

  • Avoid prolonged exposure to direct sunlight before installation.
  • Store in a cool, dry place.
  • Handle with care to prevent tearing or damage.

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