Auralex STOPGAP StopGap Acoustical Sealant

Seal in Sound Quality with Auralex STOPGAP Acoustical Sealant
Maximize the acoustic performance of your space with Auralex STOPGAP Acoustical Sealant. This high-performance, water-based sealant is expertly formulated to significantly reduce sound transmission through wall perimeters or around cutouts for electrical boxes, helping you achieve optimal STC/MTC values. Whether you're building a home theater, sound studio, or simply enhancing your living space for better sound quality, STOPGAP ensures that every note and word is contained within your designated area.

Flexible and Durable Solution
Auralex STOPGAP Sealant stands out due to its incredible elasticity and durability. Unlike other sealants that harden and crack over time, STOPGAP retains its flexibility, staying pliable up to five times longer than other brands. This extended flexibility prevents cracks and gaps from reappearing, ensuring long-term sound insulation with a single application.

Easy Application and Maintenance
Designed for ease of use, STOPGAP comes in a large 28 oz. caulking tube and applies smoothly with a caulking gun (available at any local hardware store). Once applied, the sealant dries to a tough film that remains elastic, allowing for subsequent adjustments or renovations without compromising the seal. The surface can be painted over once dry, making it easy to blend seamlessly with your room’s décor.

High Safety Standards
Safety is a priority with Auralex products, and STOPGAP is no exception. It dries to a white finish, is non-staining, and meets ASTM E-84 standards for flame retardancy. These properties make STOPGAP not only an effective soundproofing solution but also a safe choice for residential and commercial applications.

Comprehensive Coverage and Performance
Each tube of STOPGAP covers approximately 32 linear feet with a 3/8 inch bead, ensuring that you have sufficient product to complete your projects effectively. When applied according to ASTM C-919 standards for acoustical applications, STOPGAP can achieve a Sound Transmission Class (STC) of 53, offering superior noise-blocking performance that is crucial for critical listening environments.