Product Data Sheet Show all documents

Cromar® 3-in-1 Overfascia Eaves Protection Comb Filler

Efficient multi-functional ventilation system

The Cromar® 3-in-1 Overfascia Eaves Protection Comb Filler is an integrated eaves protection system designed to provide ventilation, underlay support, and bird/insect exclusion at the eaves in a single, easy-to-install unit. The system combines:

  • an over-fascia ventilation strip
  • an underlay support tray
  • an integrated eaves comb filler
helping to protect the roof structure while ensuring correct airflow and compliance with modern roofing standards.

  • 3-in-1 solution: ventilation + underlay support + comb filler in one product.
  • Prevents birds, bats and insects entering the roof void.
  • Supports roofing underlay, preventing sagging into the gutter.
  • Over-fascia ventilation helps maintain continuous airflow at the eaves.
  • Quick and easy installation, reducing labour time.
  • Maintenance-free once installed.
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Product Data Sheet Show all documents

Usage

  • Pitched tiled roofs (new build and refurbishment).
  • Eaves detailing where ventilation, underlay support, and bird protection are required.
  • Suitable for use with most profiled concrete and clay roof tiles.
 

Advantages

  • 3-in-1 solution: ventilation + underlay support + comb filler in one product.
  • Prevents birds, bats and insects entering the roof void.
  • Supports roofing underlay, preventing sagging into the gutter.
  • Over-fascia ventilation helps maintain continuous airflow at the eaves.
  • Quick and easy installation, reducing labour time.
  • Maintenance-free once installed.

Packaging

Cardboard boxes with 10 units.

Colour

Black

Product Details

Product Information

Shelf Life

Physical plastic items have not had their shelf life determined due to longevity.

Storage Conditions

Store in a cool, dry place. Avoid direct sunlight.

Length

1 m length

Application

Application steps

APPLICATION INSTRUCTIONS

  • Installed at the eaves before tiling commences.
  • Fixed over the fascia board.
  • Roofing underlay is dressed onto the support tray.
  • Bottom course of tiles beds onto the integrated comb filler, sealing the gap.
  • Complete all roofing work in line with current British Standard codes of conduct.

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