Cromar Vent 3 Pro 1.5m x 50m Breathable Felt

Product Code 4014
£81.79
Incl. VAT £98.15

Est. delivery: 3-7 Working Days

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  • Three Layer Membrane
  • Clean and easy to use
  • Lightweight and Flexible
  • Excellent tensile and tear strength
  • Waterproof Membrane
  • Long Term Durability
  • UV Stable (4 months exposure)
  • Warm and Cold Roof Application
  • No additional ventilation required

Cromar Vent 3 Pro - Breathable Felt

The Cromar Vent 3 Pro is a triple layered, high performance breather membrane. It is made from high tensile spun bonded polypropylene layers that are wrapped around a micro porous polypropylene film. It has been specifically designed for use in both fully supported and completely unsupported roof systems. You can use this highly adaptable product regardless of whether your roof is tiled, slated, or metal.

The Cromar Vent 3 Pro has become the number one choice of breather membrane for professionals due to its high vapour permeability, waterproof nature, excellent tear strength, and high wind uplift resistance. It is also diverse in its functionality – you can drape it over rafters unsupported or lay it directly over insulation.

Consisting of three layers, the Cromar Vent 3 Pro is fully waterproof while enabling moisture vapour to pass through its specialised fabric. The outer layer forms the functional waterproof surface, the middle layer is the breathable membrane itself, and the inner layer protects the membrane from abrasion and mechanical damage while also providing it with additional strength and support. This means that no additional ventilation will be required.

All Cromar felt membranes are BBA certified and suitable for both cold and warm roof applications. Made up of three layers of spun bonded membrane, the Cromar Vent 3 Pro is easy to use and requires little to no maintenance. You won’t have to worry about gusting wind noise due to the felt’s excellent tensile strength. It also offers great nail tear resistance and will be UV stable for up to three months from the initial point of instalment.

A Cromar Vent 3 Pro roll is 50 meters long and available in two widths – 1 meter or 1.5 meters. These are standard sizes that will conform easily to any typical roof configuration or the individual working practices of the installer.

FREE DELIVERY on Roof Windows and Accessories on orders over £50 (Exclusions apply)

All other Delivery Charges are based on weight and location, please add products to your basket to calculate shipping.

A small amount of product lines from particular manufacturers listed below will incur a supplier delivery surcharge.


Next Day Delivery available on orders of stocked items if placed before 2pm

Deliveries will be made between 8am and 6pm. Delivery times apply to weekdays only.


Delivery of Windows to England, Wales, and the majority of Scotland:
Basket Value Price (£)
0-£50 £9.95
Over £50 Free Delivery

Delivery of Windows to the Channel Islands, Scottish Highlands, Northern Ireland, Isle of Man

(postcodes IV, HS, KA27-28, KW, PA20-49, PA60-78, PH17-26, PH30-44, PH49-50, ZE, AB)

Basket Value Price (£)
0-£249 £20
Over £250 £50

It is with regret that we cannot offer a service to these areas for orders over 126kg but please call us on and we will attempt to organise a delivery to your custom if required.


Supplier Delivery Charges

Please note the following supplier delivery surcharges:

Ariel Plastics = £25.00

Britmet Tileform= £35.00

Lead Products(orders under 250kg) = £50.00

Marley Eternit roof tiles (orders under a pallet) = £75.00

Marley Eternit sheeting (exclusions apply) = £50.00

Redland = £100.00

Palram = £25.00

Please phone us on if you are unsure.