Choosing the Right Roofing Felt

The right product depends on the type of roof and whether you need an underlay beneath tiles or slates, or a finished covering for a shed or garden building.

Our range includes modern roof membranes alongside traditional felt products. Therefore, it is important to check the intended application before ordering.

Breather Membranes for Pitched Roofs

Breather membranes are used as underlays beneath tiles and slates on pitched roofs. They are designed to allow water vapour to pass through the membrane while helping protect the roof structure from moisture entering from outside.

eRoofing stocks options from manufacturers including Klober, Cromar and Permavent.

Different membranes have different performance characteristics and installation requirements. Always check the manufacturer’s specification and make sure the chosen product is suitable for the roof design.

Non-Breathable Roofing Membranes

Non-breathable or high-resistance underlays have different vapour characteristics from breathable products.

Choosing between membrane types should be based on the complete roof construction and ventilation strategy rather than price alone. If you’re replacing an existing underlay or working to a particular roof specification, check the required membrane type before ordering.

Shed Felt for Garden Buildings

Shed felt differs from the membranes installed beneath tiles and slates because it can form the exposed weatherproof covering on suitable sheds and garden buildings.

Options include traditional mineral-finished rolls in popular colours such as black and green. Different grades are available, so consider the building, expected service life and manufacturer’s installation requirements when choosing.

Felt Roofing Shingles

Felt shingles provide an alternative finish for suitable sheds, summer houses and other garden buildings.

Rather than the appearance of a continuous felt roll, shingles create a more defined tiled effect. eRoofing stocks IKO Armourglass Plus shingles in a choice of colours, making them useful where the finished appearance of the roof is important.

What Size Roll Do I Need?

Before ordering, calculate the area of the roof and check the width and length of the selected roll.

Remember that the amount required may be greater than the basic roof area because the installation can require overlaps, detailing and additional material at edges. Follow the manufacturer’s installation instructions when calculating the quantity for your project.

What Else Do I Need?

Depending on the product and installation method, you may also need compatible felt adhesive, roofing nails or other fixings.

Check the manufacturer’s instructions before purchasing accessories. This is particularly important because fixing methods vary between membranes, shed coverings and different roofing systems.

Check Before You Buy

Before choosing a product, consider:

• Pitched roof, shed or garden building
• Underlay or exposed roof covering
• Breathable or non-breathable specification
• Roll width and length
• Required coverage
• Installation and fixing method
• Compatible adhesives or fixings
• Manufacturer’s installation guidance

Choosing according to the roof construction and application will help you narrow the range and find a suitable product more quickly.