QuietSeal Pro Acoustical Sealant 28 oz. Light Blue

QuietSeal Pro is a high-performing, non-hardening acoustical sealant used to maintain the optimum acoustic performance of wall and ceiling assemblies. It is designed to prevent sound leaks, air movement, and vibration transfer by sealing perimeters and gaps in STC-rated assemblies. The sealant remains permanently soft, ensuring lasting performance without cracking or separation. Environmentally friendly and easy to use, QuietSeal Pro is water-based, low VOC, and cleans up easily with soap and water. Ideal for sound-sensitive residential and commercial projects in San Francisco, QuietSeal Pro enhances sound control when used with QuietRock and QuietGlue Pro.

Key Features

• 28 oz.
• Color: Light Blue
• High performing, non-hardening acoustical sealant designed to optimize STC-rated assemblies
• Water-based, solvent-free, low VOC (< 0.1 g/L), and low odor
• Seals perimeters, edges, and penetrations to prevent sound and air leakage
• Provides a draft and cold smoke seal in addition to acoustic sealing
• Remains permanently soft and flexible – resists cracking or adhesion loss
• Easy application and cleanup with soap and water
• Meets ASTM C834 Standard Specification for Latex Sealants
• Volume shrinkage ≤ 30 % (ASTM C1241 Type OP)
• No slump observed (ASTM D2202)
• Grade -18 °C flexibility – no cracking or adhesion loss (ASTM C734)
• Recovery ≥ 75 % and adhesion loss ≤ 25 % (ASTM C736)
• Maximum stain index of 1 (ASTM D2203)
• Class A surface burning characteristics (ASTM E84)
• Coverage: approximately 88 linear feet per tube at 1/4" bead
• Storage: 40 °F to 100 °F (do not freeze)
• Weight: approximately 3 lbs per tube
• Part of the Quiet Sound Damping System – works with QuietRock EZ-SNAP, QuietSeal Pro, and QuietGlue Pro for complete sound control

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.