Pitched Roofing Underlays

Pitched Roofing Underlay Product Selector

Find the right pitched roofing underlay for your project.

Underlay Selection - Areas of Application & Ventilation Requirements

A number of design considerations need to be taken into account when constructing new pitched roofs or in refurbishment of existing roofs. The area of application will determine the minimum product choice from the Icopal range in terms of ventilation required or mechanical performance.

Read more...

Selecting The Correct Underlay To Resist Wind Uplift

One of the functions of an underlay or breather membrane is to reduce the wind load, generated under wind gusts, that acts on the underside of the roof slates or tiles.

This issue is addressed in the BS5534 Code of Practice for Slating and Tiling. The selection of the correct underlay or breather membrane is dependent on the exposure of the roof to wind uplift, the type of roof construction specified and roof tile batten gauge. It may also be necessary to seal the lap of underlay. 

A consequence of the incorrect selection of appropriate underlays or breather membranes is an increased risk of the roof covering becoming dislodged.

Click here to find the correct underlay or breather membrane for your roofing project and to ascertain whether it complies with the wind uplift zonal performance requirements of BS5534.

For further more detailed information regarding the selection and installation of pitched roof underlay, please consult our Design Guide.

    Contact Icopal 0161 8654444

    Find Local Support

    To discuss your project in more detail please contact
    Your Local Area Manager

     

    Technical Support

    Telephone:

    0330 123 4585

    Email: technical.uk@bmigroup.com

     

    Sales Enquiries & Orders

    Telephone:

    0843 224 7400

    Fax:

    0843 224 7401

    Email: sales.admin@bmigroup.com

    Latest News

    BMI's training facilities claim academy status

    Read more...

    Leeds duo take the hounours at BMI Apprentice of the Year

    Read more...

    BMI reveals roofing's top 20 for the Apprentice of the Year final

    Read more...

    BMI crowns the highest building in the West Country

    Read more...

    Winners and contenders alike praise the BMI Apprentice of the Year competition

    Read more...

    BMI National Training Centre flattens Ceiran’s learning curve

    Read more...

    Complexity simplified with BMI Icopal’s Total Torch system curve

    Read more...

    BMI’s apprentice competition demonstrates its commitment to roofing’s future

    Read more...

    BMI UK & Ireland launches to the UK construction industry

    Read more...

    This site uses cookies in accordance with our Website Privacy Policy. By continuing to browse the site you are agreeing to our use of cookies. To browse without the use of cookies, you can opt-out as explained in our Website Privacy Policy or adjust your cookie settings for your browser

    Icopal: We Protect Your Building