Straw PU Foam
Technical overview
Straw-applied PU foam for accessible filling and installation work
Straw PU foam is dispensed through the tube supplied with the can. It expands after application and cures with atmospheric moisture, making it practical for intermittent filling, fixing, and insulation tasks where tube application is appropriate.
How the material works
- Simple can-and-straw application
- Expansion helps fill irregular cavities
- Cured foam can support thermal and acoustic gap treatment
- Expansion, yield, cure, and fire class depend on the exact grade
What determines the right grade
- Gap size and access
- Required expansion control and finish
- Substrates, moisture, and application temperature
- Fire, insulation, yield, and curing requirements
Typical filling and installation uses — grade dependent
- Filling gaps and cavities around compatible construction elements
- Door and window-frame installation where the selected grade is documented
- Filling penetrations and gaps around services
- General insulation and fixing tasks listed for the product
A straw applicator describes the delivery method—not fire rating, yield, insulation value, or suitability for every cavity. Protect cured foam from exposure as required by the assembly design.
Josoor can review the gap, substrates, conditions, and required performance, then offer a suitable documented straw-foam grade.
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