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One of the key components in exterior wall assemblies is sheathing membranes. They are very significant for the successful performance of wall assemblies. Sheathing membranes are multifunctional. Although they do not contribute to the aesthetics of a building and provide little thermal value, they do perform many hidden functions such as control air and vapour movement, protect sheathing and other interior components of wall assemblies from water ingress, and also serve as the much relied upon drainage plain for "drained" or "rainscreen" assemblies. When sheathing membranes serve as "secondary weather barriers" they must perform regardless of the exterior cladding chosen. As the second line of defense from the elements such as wind driven rain, sheathing membranes must be detailed and specified accordingly to ensure that they perform as intended.

#########* For complete instalation details, visit www.srpcanada.ca

With such important functions, it is crucial that sheathing membranes are specified and installed correctly to provide the required hidden protection intended before they are covered by the exterior cladding.



SRP Inc.

191 Booth Rd. Unit 1
North Bay, ON P1A 4K3
Ph: 1-705-495-0927
Fax: 1-705-497-7599
www.srpinc.ca

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Here are some key considerations when selecting your next sheathing membrane:

  1. Determine whether a "breathable" (vapour permeable) or "non-breathable" (vapour impermeable) sheathing membrane is required.

  2. Method of attachment?

    • Mechanically Fastened
    • Fully adhered
    • Roller applied
    • Torch applied


  3. Determine function of sheathing membrane.

    • Air barrier
    • Secondary weather barrier
    • Drainage plane
    • All of the above


  4. Material Compatibility:

    • Use the manufacturer¹s recommended accessories, such as flashing products and tapes, as testing is conducted by the manufacturer using these products.


  5. Key Details:

    • Flashing of rough openings (windows, doors, service penetrations, etc.), seams, overlaps, parapets, base of walls, transitions, expansion joints, etc.


  6. Installation:

    • Manufacturer¹s instructions should always be followed to ensure a proper installation.

Remember's it's all in the details.

If you would like help with your specifications regarding sheathing membranes please phone
SRP Building Products at 705-495-0927.

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