Hodgson Sealants - Manufacturer of high quality premium sealants

Tel: 01482 868321

Sales enquiries : sales@hodgsonsealants.com
Technical enquiries : technicalservices@hodgsonsealants.com

Expanding Foam

Expanding Foam is a single component, moisture cure, polyurethane construction foam manufactured in compliance with the requirements of ISO9001:2008.


Excellent adhesion to a wide variety of building materials such as brick, concrete, metal and PVC-U.

  • Hand applied, foam gun is not required.
  • High thermal and acoustic insulation properties.
  • This foam does not contain (H) CFC-PCB or formaldehyde.
  • Sealing of pipe penetrations and wall, roof and floor joints.
  • For window and door fitting.
  • Weatherproof and will not rot.
  • Totally cured foam is chemically inert.


  • Gap filling – sealing of partition walls and around pipes and other structures.
  • Provides a backing material for joints prior to the application of sealants.
  • To maintain insulation to cavities and joints in structures.
  • General gap filling applications.
  • Installation of windows and doors.
  • Thermal and / or acoustic insulation.


Application and ambient surface temperature range: +10°C to +30°C.
Can / applicator temperature range: +10°C to +30°C (+20° for optimal performance).
Shelf life: 12 months, always store and transport in an upright position (in order to avoid blockage of the valve), in cool dry conditions between +5°C and +30°C.
Note: Carefully read the health and safety information contained in the material safety data sheet before use.

Before use: put on protective gloves.

Surface preparation: All surfaces must be clean, and free from oil, grease and loose materials.
Spray / moisten surfaces with clean water before use as this will improve both expansion and adhesion of the product.
Shake the can of foam thoroughly (for at least 30 seconds) before application in order to thoroughly mix the foam components.
Screw the applicator onto the can. Only using the can upside down, with the valve facing down: commence foaming at the lowest point of the joint and proceed carefully until familiar with the extrusion rate. Fill the cavity about half full of foam as post expansion will totally fill the cavity.
After application the foam can be cut as soon as it has cured. Uncured foam can be removed using acetone or PU foam gun solvent but care must be taken not to damage surfaces.

Expanding Foam must be protected from exposure to UV light after curing (e.g. with paint or plaster). Failure to do so will degrade the foam.
The rate of cure is fully dependent upon temperature and humidity. Low temperatures and humidity will slow the rate of cure. Poor adhesion to low surface energy materials such as PE, PP, PA, silicone and PTFE can be expected.

Expanding Foam is part of a full range of sealants and tapes designed for the professional user.

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From £4.10 (excl. VAT)

Hodgson Sealants

We offer free delivery* on all orders over £50

* UK Mainland only
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Please visit our sister company for all your Butyl Tape needs
Hodgson Sealants