Putty Pads
Acoustic Putty Pads for Penetrations
BA650 BlastPutty is a flexible, easy-to-apply soundproofing putty pad designed for wrapping electrical outlets and through-penetrations. Self-adhering with release paper on both sides, these pads maintain the acoustic rating of the assembly at critical points where sound can leak through walls. Where the penetration sits in a fire-rated assembly, firestopping must be specified separately with a listed product.
Stocked in Bangkok and sold online in Thailand by IAC Acoustics (Thailand). Outside Thailand, request a quote.
- STC Rating: At least STC 62 (ASTM C919 & E90)
- Self-adhering with release paper
- Easy to apply and mold
- Maintains acoustic integrity at penetrations
About Putty Pads: Engineered for Acoustic Excellence
Electrical outlets and penetrations are the weak points in any soundproofing system. No matter how effective your wall treatment, sound will find these gaps and leak through, compromising your entire acoustic investment. BA650 BlastPutty Pads solve this critical problem.
BlastPutty is a specialized acoustic and fire-rated putty pad designed specifically for wrapping electrical outlets, switch boxes, and through-penetrations. Self-adhering with release paper on both sides, these pads are simple to apply during construction or retrofit applications.
The acoustic performance of BA650 is exceptional - laboratory tested to STC 62 rating per ASTM C919 and E90 standards. This means your electrical outlet penetrations can actually exceed the sound blocking performance of the surrounding wall assembly, eliminating the weak point that undermines many soundproofing installations.
Where a penetration sits in a fire-rated assembly, the firestopping must be specified separately against the requirements of that assembly - BlastBlock publishes no third-party fire-stop data for BA650.
Installation is simple - wrap the electrical box with BA650, mold to seal gaps, and complete your wall finish. The putty remains pliable for future access while maintaining both acoustic and fire performance. No special tools or training required.
For professional soundproofing installations, BA650 is not optional - it's essential. Acoustic consultants and soundproofing contractors know that even the best wall treatments fail if outlet penetrations aren't addressed. BA650 ensures your installation delivers its full rated performance.
BA650 Putty Pad Application
- 1Identify all electrical outlets, switch boxes, and penetrations in the wall assembly.
- 2Remove release paper from one side of BA650 putty pad.
- 3Center the pad over the electrical box with adhesive side facing the box.
- 4Wrap edges of the pad around the sides of the electrical box.
- 5Press firmly to seal all gaps between the box and the surrounding material.
- 6Remove second release paper if applying directly to drywall.
- 7For new construction, install before drywall application.
- 8For retrofit applications, remove outlet cover, apply pad, reinstall cover.
- 9Mold putty as needed to seal any gaps or irregular openings.
Technical Advantages
- STC 62 rating per ASTM C919 and E90 laboratory testing
- Self-adhering application with dual release paper for easy handling
- Remains pliable for future access while maintaining performance
- Compatible with all standard electrical box sizes
- No special tools required - mold by hand to seal gaps
- Pre-sized 18cm x 18cm pads cover most residential electrical boxes
How it is installed
Illustrative details, not to scale. No acoustic performance is implied by a drawing; follow the installation guide for the full steps.
Sealing a socket box
One BA650 pad per box. Acoustic seal only — no fire rating is claimed.
Read the full methodCommon Use Cases for Putty Pads
Install BA650 on all electrical boxes before drywall application to maintain STC ratings throughout the wall assembly. Essential for rated acoustic partitions.
When adding soundproofing to existing walls, outlet penetrations become the primary sound leak. BA650 addresses this weak point without major reconstruction.
Seal the acoustic weak point at electrical penetrations. Firestopping for fire-rated assemblies must be specified separately.
Professional studios require complete acoustic isolation. BA650 ensures electrical services don't create sound leaks between critical spaces.
Apartments and condos with party walls benefit from BA650 treatment to reduce neighbor-to-neighbor sound transmission through outlet penetrations.
Putty Pads vs. Conventional Soundproofing
| Feature | BlastBlock Putty Pads | Conventional Products |
|---|---|---|
| STC Rating | STC 62 | Often unrated |
| Application | Self-adhering | May require adhesive |
| Future Access | Remains pliable | May harden |
| Testing Standards | ASTM C919, E90 | Often untested |
Frequently Asked Questions
Industry Benefits
Electrical Contractors
Easy specification that adds value to acoustic and fire-rated wall installations
Acoustic Consultants
Essential component for achieving specified STC ratings in wall assemblies
General Contractors
Single-step acoustic seal at electrical penetrations, with no separate trade required
Renovation Contractors
Retrofit solution for improving acoustic performance of existing walls
Buy Putty Pads in Thailand
Putty Pads is stocked in Bangkok and sold online, with prices in Thai baht, by IAC Acoustics (Thailand) Co., Ltd. — the authorised distributor for Thailand. Delivery nationwide, or collect from the Bangkok warehouse by appointment. Thai-language product pages and buying guides are available on the same site.
