0 Quotes 0Compare
0 Compare 0 Quotes

Polyurethane (PU) Foams for Thermal and Acoustic Insulation

25 products · Professional Acrylic, PU, MS Polymer and Bituminous Sealants

Polyurethane (PU) foams are expanding foams in aerosol cans used for sealing, filling, insulating and bonding in construction. Once cured they provide thermal and acoustic insulation and are widely used for fitting window and door frames, filling gaps and bonding insulation boards. In this collection you will find products from Unifix and NPT Sigill.

Types in the collection

  • Gun-applied foams: adhesive, flexible, with precise, controllable dispensing.
  • Adhesive foams for external wall insulation systems: for bonding insulation boards.
  • Thermal and acoustic foams: for window and door frames and for seals with an insulating function.
  • Fire-resistant foams: for seals where fire resistance is required.

How to choose

Choose according to the application: fitting window and door frames, filling, bonding boards or fire sealing. Check the format (gun-applied or with a straw) and the application temperature range shown on the can. Cured foam must be trimmed and protected from UV rays with plaster or sealant.

For availability and advice on choosing, request a quotation from AMES: we work on a quotation basis only and will help you put together the right supply for your job.

How to choose polyurethane foam for filling and sealing
25 results · page 1/2
Frequently asked questions: Polyurethane (PU) Foams for Thermal and Acoustic Insulation
What are polyurethane foams for thermal and acoustic insulation used for?

They are used to bond insulation panels, fill cracks and seal window frames, creating a barrier against air leaks. Once cured they provide thermal and acoustic insulation, useful on facades, roofs and partition walls. The range includes adhesive foams for external wall insulation, thermal-acoustic foams for window frames and products for roofs: the choice depends on the point to be insulated.

What is the difference between an adhesive foam for external wall insulation and a window foam?

The adhesive foam for external wall insulation systems, such as the WDVS Insulation Adhesive Foam for Unifix gun, fixes insulation panels to the wall with an adhesive strength designed for that task. Window foam fills the gap between frame and masonry and is more elastic, so it can follow small movements of the frame. They are not interchangeable: use the product specified for your job.

What do the codes B2, B3 or EI 180 on Polipur foams mean?

These codes indicate the fire reaction classes (B2, B3) or fire resistance (EI 180) declared by the manufacturer for that product. They matter when the foam is used on roofs or in parts of the building with fire safety requirements. Check the data sheet for the class, field of application and the test conditions it refers to.

Which foam should be used to fix the panels of an external wall insulation system?

To fix insulation panels you need foams specific to external wall insulation, such as the WDVS Insulation Adhesive Foam for Unifix gun, or Polipur Construction External Wall Insulation foam. An external wall insulation system must, however, be completed according to the system manufacturer's instructions, with the anchors and layers specified. Do not use a generic foam to fix external panels.

How do you apply a polyurethane foam with a gun?

Shake the can well, screw it onto the gun and apply the product in layers that are not too thick, as the foam expands and cures with the moisture in the air. The data sheet gives the quantity, waiting times and application temperature. Wait for it to cure before cutting or loading the panel, and work in a ventilated space.

How do you clean fresh and cured polyurethane foam?

Fresh foam is removed with the Unifix Universal PU Cleaner or the Polipur universal foam-dissolving cleaner, which work while the product is still soft. Cured foam must be cut away by hand or with a knife, as cleaners mainly work on fresh product. Wear gloves and goggles during cleaning.

What precautions are needed when working with PU foams on site?

Work in a ventilated space, wear gloves and goggles, and do not smoke near the cans. Store containers away from heat sources and at the temperature shown on the label. Read the safety data sheet before use, especially the instructions on components and inhalation risks. For work at height, the rules of D.Lgs. 81/2008 (Italian Legislative Decree 81/2008 on workplace safety) apply.