QuietJoint is a sound, draft, heat, cold, and dust blocking acoustic partition closure and joint filler for interior, nonmoving joints and gaps. Blocks sound transmission between rooms.
Emseal QuietJoint is a high-STC, non-mechanical, sound-blocking joint filler designed for interior, non-moving joints and gaps. Engineered to seal air, sound, heat, cold, and dust infiltration, it is an ideal solution for partition gaps, window-wall joints, mullions, and head-of-wall conditions. Featuring a mass-loaded fire-resistant foam core coated with commercial-grade silicone, QuietJoint® offers superior sound attenuation with an STC-53 rating, while also delivering excellent insulation properties. The foam core is infused with an acrylic-based mass-loading agent, ensuring durability and compliance with ASTM E-90 sound transmission standards. Available in multiple colors or a paintable finish, QuietJoint® provides a seamless aesthetic in various architectural applications.
Property | Value |
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Sound Transmission Class (STC) | STC-53 (single side), STC-72 (double side) |
Outdoor-Indoor Transmission Class (OITC) | OITC-38 (single side), OITC-60 (double side) |
Fire Resistance | ASTM E-84 Class A (Smoke and Flame Spread) |
Insulation Value (R-Value) | R-2.85 per inch of depth |
Material Options | Silicone-coated (SHH, SHG) or paintable STP |
Available Joint Widths | 1" to 6" (25mm to 150mm) |
Depth of Seal | 2" (50mm) for widths up to 4.75", 3" (75mm) for widths 5" to 6" |
Standard Lengths | 6.56 ft (2m) or 10 ft (3m) |
What applications is Emseal QuietJoint® used for?
It is designed for interior, non-moving gaps and partitions, including window mullions, head-of-wall applications, and partition closures.
Does QuietJoint® provide soundproofing?
Yes, QuietJoint® has a high STC rating of up to 72 when installed on both sides of a partition, making it highly effective at reducing airborne noise transmission.
What sizes does QuietJoint® come in?
It is available in widths from 1" to 6" with a standard depth of 2" or 3", depending on the width.
Can QuietJoint® be painted?
Yes, the STP-coated variant is designed to be paintable with latex and acrylic coatings for a customized finish.
For more details, visit Emseal QuietJoint
Brand | Emseal |
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