Rain Collar SpiroFlex SpiroFlex 100 (protective flashing for duct/pipe penetration)

SpiroFlex 100 rain collar is a protective flashing designed to seal and weatherproof duct and pipe penetrations. Manufactured by SpiroFlex for the 100 model size, the collar creates a close-fitting barrier around roof or wall protrusions to prevent water ingress, protect surrounding insulation and building fabric, and give a neat finished appearance to HVAC and general pipe-through-roof installations.

Advantages

The SpiroFlex 100 rain collar provides durable protection against rain and moisture at penetration points without requiring complex installation procedures. Its flexible design adapts to standard 100-size ducts and pipes, ensuring a secure fit and reliable sealing. The unit is designed for outdoor exposure and resists common weathering effects, helping to extend the service life of roof penetrations and adjacent materials.

Suitable for

• Sealing HVAC and ventilation duct penetrations through roofs or walls
• Weatherproofing pipe penetrations for plumbing, drainage or flues
• Protecting insulation and building fabric around rooftop or wall-mounted ducts
• Improving the appearance of pipe terminations and roof penetrations

Key specifications

• Model size: designed for 100-size ducts and pipes
• Material: flexible flashing suitable for outdoor use
• Function: prevents water ingress and provides a neat finish
• Application: compatible with roof and wall penetrations in HVAC and general piping

How to use

Position the SpiroFlex 100 rain collar over the duct or pipe so the inner opening fits snugly around the penetration. Ensure the base of the collar sits flush against the roof or wall surface and align it to provide full coverage of the joint area. Secure the collar per the project’s standard fastening or adhesion method and apply compatible sealant where required to create a continuous weatherproof barrier. Inspect the installation to confirm a close fit and proper contact with the substrate.

Usage recommendations

For best performance, use the rain collar with appropriately sized ducts or pipes and check compatibility with roofing materials. Apply weatherproof sealants or flashings recommended for the building substrate, and inspect periodically for signs of wear or displacement after severe weather events.