If you're seeking a premium quality felt underlay, this Cromar Vent 3 Pro is an excellent choice. It offers superior performance as a breather membrane due to its triple-layer fabric design, boasting layers of high tensile spun bonded polypropylene and a micro-porous polypropy... Read More
If you're seeking a premium quality felt underlay, this Cromar Vent 3 Pro is an excellent choice. It offers superior performance as a breather membrane due to its triple-layer fabric design, boasting layers of high tensile spun bonded polypropylene and a micro-porous polypropylene film.
Suitable for both fully supported and unsupported tiled, slated and metal roof systems, this Vent 3 Pro underlay is the ultimate option for its superior vapour permeability, waterproof capabilities and high wind uplift resistance.
Featuring a three-layered design, the outer layer is a functional waterproof surface, while the middle layer is a breathable waterproof membrane. The inner layer offers additional protection, guarding the membrane against abrasion and damage while increasing strength. This unique combination of layers enables the fabric to allow moisture vapour to pass through while remaining entirely waterproof.
This Vent 3 Pro comes in a standard width of 1.5m, making it easy to conform to any typical roof configuration or installer's working practices. The upper surface is printed with the trade name and head lap lines and comes in a striking blue colour. So, whether draped unsupported over rafters or laid directly over insulation, this Vent 3 Pro is the perfect solution if you need a durable and reliable underlay for your roofing system.
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