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Task: adhesive foam for EPS/XPS

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mounting foams are used for filling gaps, cavities, and installation joints, installing window and door blocks, insulating joints, and fixing selected building materials. The section includes household and professional foams, fire-resistant formulas, adhesive foams for insulation boards and blocks, and a cleaner for fresh foam residue and tool care.

What mounting foams help with

  • filling cracks, gaps, holes, cavities, and installation spaces;

  • installing and sealing window and door blocks;

  • sealing joints, pipe penetrations, and areas where a cavity needs to be filled;

  • auxiliary thermal and acoustic insulation of joints when applied correctly;

  • fixing insulation boards, panels, foam blocks, and aerated concrete blocks with adhesive foams.

How to choose the foam type

  • Household foam is suitable for work with an adapter tube when an applicator gun is not needed.

  • Professional foam is used with an applicator gun when application control and repeatable work matter.

  • Fire-resistant foam is appropriate for assemblies that require this material type according to the project or site requirements.

  • Adhesive foam is used for installing insulation boards, panels, foam blocks, aerated concrete blocks, and some building structures.

  • Foam cleaner is used for fresh residue, can valves, applicator guns, and tools.

What to check before work

  • can type: household with a tube or professional for an applicator gun;

  • substrate material, joint width, cavity volume, and whether the part needs fixing;

  • application temperature, humidity, and surface preparation recommendations;

  • foam expansion after application and final curing time;

  • the need to clean fresh residue before curing and protect the formed joint from conditions specified by the manufacturer.

Adhesive foam replaces cement-based board adhesive: EPS and XPS boards are bonded without water, a mixer or a day of waiting. Professional gun foam has 15–30% post-expansion, covers 12–14 m² of board per 800 ml can and holds the board in 2 hours. 60 Seconds is tack-free in 3–5 minutes and is handy on ceilings and plinths, but leaves almost no time to adjust. Household foam works with a straw and no gun, yet expands by 150–250%, so lay a thinner bead and check the plane with a straightedge right away.