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BoPin 240 Economy Standard Foam
BoPin 240 Economy Standard Foam_application
BoPin 240 Economy Standard Foam_benefit

BoPin 240 Economy Standard Foam

BoPin 240 is a single-component, moisture-curing polyurethane expanding foam sealant in a 750ml aerosol can. It expands on contact with atmospheric moisture to fill gaps and voids, curing into a rigid, closed-cell foam with excellent thermal insulation, acoustic damping and moisture resistance properties. The standard-expansion formula is well suited to general construction gap filling, door frame installation, pipe penetration sealing and building maintenance work where precise low-pressure application is not required. Its economy positioning makes it an accessible choice for contractors and maintenance teams working on general projects.

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Main Benefits
  • Self-expanding formula fills irregular gaps and voids completely
  • Excellent thermal insulation — λ = 0.038 W/m·K
  • Good acoustic damping — reduces sound transmission through filled gaps
  • Moisture resistant after full cure — closed-cell structure resists water ingress
  • Adheres to most common building substrates without primer
  • Trimmable after full cure
  • B3 fire classification
Adhere To
  • Concrete and masonry
  • Brick and blockwork
  • Timber and wood-based boards
  • Metal frames and profiles
  • Most plastics (test recommended on polystyrene and polycarbonate)
Application Areas
  • General construction gap and void filling
  • Door frame and interior frame installation
  • Pipe and cable penetration sealing through walls
  • Building maintenance crack and gap repair
  • Warehouse and industrial building gap filling
  • Thermal and acoustic insulation of partition walls
Package
750ml aerosol can — 12 cans per carton Available colors: Off-white / cream (foam colour as cured)

其他信息

Curing System

Moisture cure (single component)
Foam Structure

Closed-cell elastic foam
Thermal Conductivity (λ)

0.038 W/m·K
Fire Classification

B3
Application Temperature

+5°C to +35°C (optimum +18°C to +25°C)
Temperature Resistance (cured)

-30°C to +80°C
Tack-Free Time

8–15 min (23°C / 50% RH)
Full Cure Time

12–24 hours
Trimming Time

30–60 min
Shelf Life

12 months (unopened, ≤27°C)
Color

Customized
Standard

JC/T 936-2004
  • Preparation — Shake can vigorously for 30 seconds before use. Lightly dampen the substrate with water to accelerate cure. Ensure adequate ventilation.
  • Application — Attach applicator straw or foam gun. Hold can inverted and apply foam to fill approximately 50% of the gap — foam will expand to fill the remainder. Work from the back of the gap towards the front.
  • Curing — Allow to cure fully before trimming. Tack-free in 8–15 minutes. Trim excess foam with a sharp knife after 30–60 minutes. Full cure in 12–24 hours.
  • Finishing — Cured foam can be painted or plastered over after full cure.
Limitations
  • Must be applied in well-ventilated areas — wear protective gloves and safety glasses during application
  • Do not use near open flames or ignition sources — contents are flammable before cure
  • Do not use on polystyrene foam insulation boards — foam solvents may cause damage
  • Cured foam is strongly alkaline — avoid contact with clothing during application
  • Do not store cans inverted or on their side
  • Do not incinerate or puncture used cans
  • Not suitable for fire-rated penetration sealing — use BoPin 730 for fire-rated applications
  • Not suitable for movement joints or structural applications
  • Standard expansion formula not recommended for sensitive aluminium window frames — use BoPin 270 Low-Expansion Foam instead
Tips
  • For best yield, warm the can to 20–25°C before use — cold cans produce less foam output
  • Partially used cans can be stored with the straw attached if the valve is kept clean — use within a short period after opening
  • Foam expands significantly — apply conservatively and allow expansion before adding more
  • UV exposure will cause yellowing and surface degradation of uncovered foam — always cover with paint, plaster or sealant in exposed locations

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