Building sealant designed for heat and sound control, promising reliable insulation around gaps and frames. Quiet, draught-free rooms feel more comfortable and well protected. Does Bostik 3070 Caulking Cork Tube match certified performance expectations for practical renovation work?
⚡ At a Glance
- • Insulation Performance: Effective thermal and acoustic barrier using cork shot and elastic binder
- • Best for: Sealing around window frames, door frames and partitions to reduce draughts and noise
- • Not ideal for: Situations that require structural bonding or load-bearing seals
Cork shot combined with an elastic binder creates a resilient sealing compound. Air-filled cork cells crush to reduce the passage of heat, cold and airborne sound.
Reduced heat transfer - thanks to cork shot with air-filled cells
Air-filled cells inside the cork crush under compression, interrupting heat flow through gaps and joints. Elastic binder helps the cork shot conform to irregular surfaces for a continuous seal.
Lower heat loss around windows and doors helps maintain indoor temperature. Suitable for blocking draughts where foam or rigid filler would struggle to follow contours.
Improved sound insulation - with cork shot and elastic binder
The combination of cork particles and an elastic binder creates a flexible, energy-dissipating layer that reduces airborne noise transmission. Performance tested according to DIN 52210 for air sound insulation.
Rooms feel noticeably quieter when sealing gaps around frames and partitions. Practical for homes near busy roads or in multi-occupancy buildings.
Verified safety classification - thanks to official DIN and MPA testing
Certified according to DIN 52210 by the Fraunhofer Institute for Building Physics for air sound insulation, and classified under DIN 4102 - B2 for fire behaviour by the MPA in Dortmund.
Users gain assurance from recognised test standards for insulation and fire behaviour. Appropriate for projects that require documented material classifications.
✨ The 4 Key Reasons for Bostik 3070 Caulking Cork Tube
- Cork-shot formula - Reduces heat and cold transfer around frames and joints
- Air-filled cell structure - Absorbs and dissipates airborne noise effectively
- Official certifications - Confirms performance for air sound insulation and fire class
- Plastic spray tube format - Enables controlled application in narrow gaps and edges
📋 Technical Details at a Glance
- Category: Sealant / Insulation
- Composition: Cork shot and elastic binder
- Function: Sound and heat insulation
- Certifications: DIN 52210 (air sound insulation), DIN 4102 - B2 (fire behaviour by MPA Dortmund)
- Applications: Window frames, door frames, partitions and similar uses
❓ Frequently Asked Questions
Q: What is the Bostik 3070 best used for?
A: Ideal for sound and heat insulation around window frames, door frames, partitions and similar applications as stated by the manufacturer.
Q: Has the material been tested for sound insulation?
A: Yes, certified according to DIN 52210 for air sound insulation by the Fraunhofer Institute for Building Physics.
Q: What fire classification does the sealant have?
A: Classified according to DIN 4102 - B2 for fire behaviour by the MPA in Dortmund.
🏆 Our Verdict
The Bostik 3070 Caulking Cork Tube is well suited to tradespeople and homeowners who need reliable thermal and acoustic sealing around frames and partitions. Cork-shot composition with an elastic binder and official DIN/MPA classifications make it a practical choice for renovation and refurbishment work. Offers solid long-term value for projects that require certified insulation performance.
