Profiled Foam Fillers

Profiled foam fillers are foam sheets specifically cut to fill the gaps at the profile edges of roof sheets or cladding. OurĀ Premier profiled foam fillers are designed to seal roofing and cladding profiles against dust, nesting animals, snow, water and water vapour ingress. They are designed for use in eaves, ridges and intersections. The NFRC backs the use of profiled foam fillers as an effective method for closing off inter-profile cavities. The correct fillers and sealants are required to meet air tightness requirements.

Sealprem manufacture bespoke foam fillers to ensure a tight fit. This is essential for fire and moisture sealing. Another benefit is the quality of acoustic sealing provided.

Profiled foam filler materials

Profiled foam fillers are available in a range of materials dependent on requirements:

  • Polyethylene – Polyethylene has a high impact strength, while possessing a high moisture resistance. It can be produced and cut as required to provide an excellent fit when sealing roofing against dust and water.
  • High Density Polyethylene – Profiled fillers made from high-density polyethylene have a greater strength and are used for sealing eves and ridges, hips and valleys, and sealing rooflights.
  • Metallocene Polyolefin – Designed to seal roofing and cladding profiles against dust, water and water vapour ingress.
  • EPDM – Ethylene Propylene Diene Monomer is a synthetic rubber with excellent resistance to heat, light and ozone. As such it is ideal for external use.
  • Fire Retardant Polyethylene – The material used in these profiled fillers is a fully closed cell cross-linked fire retardant polyethylene.

Sealprem foam fillers are available in a range of thicknesses and colours.

Types of profiled foam fillers

Sealprem have full details of almost all cladding and roofing profiles, ensuring we can match customer requirements. Simply supply us with the manufacturer and reference number, and we can identify the requirements for the cladding profile. As well as ensuring the accuracy of the final product, this improves speed of production and delivery.

If the roof is a simple pitch, it is often more convenient to order fillers as matching pairs of large and small flute.

The choice of flute depends on which side of the profiled sheet is to be filled. The types of foam fillers available include:

Large flute foam fillers

Large flute profile foam fillers, or ridge fillers, have a smaller gap between the protruding parts. This is the filler that is designed to fit down into the valleys of the profile, and is normally used under the ridge flashing, where it will fill the inter-profile cavity between the ridge cap and corrugated roof sheet. For a reverse profile the large flute filler goes under the sheet.

Small flute foam fillers

Small flute profile foam fillers are normally applied under the roof sheet, for filling in eaves. They typically have a larger gap between protruding sections. They fill the inter-profile cavity between the corrugated roof sheet and structure. The small flute is fitted to the opposite side of the sheet compared to the large flute. It then fits upwards into the crown of the profile.

Self adhesive foam fillers

Bonded butyl sealants can be applied to both the profile or the base of the foam filler. This enables easier location and provides improved weather seal.

Fire stop fillers

Designed to be fitted above compartment walls and into corrugations where complete resistance to fire is required.

Ventilated foam fillers

Ventilated fillers are used for keeping condensation out. The types of ventilated filler are:

Trimmed profile

Used on small flute fillers, where removing the top of the flutes allows ventilation of the void. They allow condensation to form on the under side on the sheet where it can then run down over the top of the filler.

Ventilation channels

Used on large flute fillers, where either U or V shaped nicks in the base of the foam filler allow condensation forming on the ridge flashing to run down over the top of the filler.

Mesh insets

Used on both large and small flute fillers, where mesh vents are situated in the body of the flute to prevent insects entering the void. Ventilated foam fillers often feature mesh inserts for added protection.

Each type of foam filler has different uses and benefits depending on your needs. You can browse our full range of profiled foam fillers on ourĀ product pages, which feature further information about each product.

Symmetrical fillers

These are fillers that are cut to certain profiles on both sides, usually where these profiles do not fit together. These are ideal for fitting between two profiled sheets, for example, overlapping roof sheets.

Filler angle

Another important factor is the angle of the filler. Many fillers will also need to be angle cut in order to perfectly fit the space they are filling. For example, fillers to be fitted along roof hips and valleys must be cut to the angle formed by the flashing or valley and short dimension of the profiled sheet.


Foam filler that is black on one side and white on the other, for example, our polyethylene foam filler.

All of our profiled foam fillers can be cut to specification, which enable the filler to fit the space correctly, minimising energy loss and providing the tightest seal.

We manufacture bespoke fillers for eaves, ridge and other roof intersections. Contact us directly to discuss your requirements.