Sika Boom AP | MULTI-POSITION, HIGH YIELD EXPANDING FOAM

Product Category: Expanding PU Foam Brand: Sika Model Code: Sika Boom® AP

Description

Sika Boom® AP is a 1-component polyurethane expanding foam, designed for fixing, filling, and insulation applications. It is a multi-position foam, allowing application in any direction with fast curing and high expansion yield.

Applications

Used for:

• Fixing window and door frames

• Filling gaps and joints

• Sealing pipe penetrations

• Air conditioning vents

• Roller shutter housings

Insulation Function

• Thermal insulation

• Sound insulation

• Protection against cold air and drafts

Key Features

• 1-component ready-to-use

• Multi-position application (360° use)

• High expansion rate

• Fast curing

• Excellent thermal insulation

• Good sound insulation

• Can be cut, sanded, and painted

• HFC-free

Product Information

• Type: Polyurethane foam

• Packaging: 500 ml can

• Colour: Light yellow

Shelf Life

• 12 months (unopened)

• Opened can → use within 4 weeks

Storage

• Store upright

• Temperature: +5°C to +25°C

• Protect from sunlight

Density

• ~24 kg/m³

Technical Data

• Compressive Strength: ~0.04 N/mm²

• Tensile Strength: ~0.01 N/mm²

• Shear Strength: ~0.04 N/mm²

• Thermal Conductivity: ~0.030 W/mK

• Dimensional Stability: ±5%

Temperature Resistance

• Service: -40°C to +90°C

Yield

• 500 ml → ~25 L foam

• 750 ml → ~38 L

• 850 ml → ~45 L

(Depends on conditions and application)

Application Conditions

• Ambient temperature: +5°C to +40°C

• Optimal: ~+20°C

• Substrate temperature: same range

Curing Time

• Tack-free: ~10 minutes

• Cutting time: 30–60 minutes

• Full cure: 24 hours

Surface Preparation

• Surface must be:

  • Clean

  • Sound

  • Free from oil, grease, dust

Important Tip

• Lightly pre-dampen surface with water → Improves curing and reduces over-expansion

Application Method

• Shake can for at least 20 seconds

• Attach nozzle

• Apply foam into joint

• Fill in layers for deep gaps

• Allow expansion and curing between layers

• Do NOT overfill (foam expands)

Important Notes

• Do NOT fill cavities completely (expansion)

• Moisture is required for proper curing

• Use extension tube for small gaps

• Fix elements until foam fully cures

Limitations

• Not UV resistant (must be covered)

• Not suitable for:

  • PE / PP / PTFE

  • Silicone surfaces

  • Oily or greasy substrates

Safety Note

• Do not expose can to >50°C (explosion risk)

Performance Advantages

• Fast and easy gap filling solution

• Excellent insulation properties

• High expansion efficiency (cost saving)

• Suitable for construction and installation work

Cleaning

• Use:

  • Sika Boom® Cleaner

  • Sika® Remover-208

• Hardened foam → mechanical removal

Safety & Handling

• Follow SDS guidelines

• Use PPE

• Store properly

Additional Notes

• Lab-tested values

• Site conditions may affect results

• Local regulations may vary

Summary

Sika Boom® AP is a high-performance expanding foam, ideal for fixing, filling, and insulating gaps, offering fast curing, strong expansion, and excellent thermal and sound insulation, making it essential for installation and sealing works.