SpecSeal Smoke 'N' Sound Acoustical Spray

SpecSeal Smoke 'N' Sound Acoustical Spray
SpecSeal Smoke 'N' Sound Acoustical Spray

SpecSeal Smoke 'N' Sound Acoustical Spray

SpecSeal® Smoke ’N’ Sound Acoustical Spray is a high‑performance, water‑based acrylic latex spray formulated to seal gaps, linear joints, and openings associated with non‑fire‑rated penetrations in non-fire-rated wall, floor, and ceiling assemblies. Engineered for fast and uniform application, SNS Acoustical Spray delivers an effective seal that helps limit the passage of smoke, airborne particulates, and sound through construction interfaces. When properly installed, SpecSeal Smoke ’N’ Sound Spray forms a flexible, durable coating that accommodates normal building movement without cracking or loss of adhesion. The material can be applied in thicker sections—up to approximately 5/16 in.—making it suitable for a wide range of construction gaps and acoustic sealing requirements. Ideal for commercial and multifamily projects, SNS Acoustical Spray provides a clean and efficient solution for enhancing air sealing, smoke control, and sound attenuation in non‑fire‑rated assemblies.

en-us
Test Standards ASTM C919
ASTM E90
ASTM G21
Third Party Approvals

Features

  • Recommended Wet Thickness: From 1/8 in. up to approximately 5/16 in. depending on substrate and conditions
  • Sag Resistance / Hang: Increased viscosity supports thicker builds with improved hang and control
  • Substrate Coverage: Effectively covers mineral wool backing materials and uneven or irregular substrates
  • Flexibility: Maintains elasticity after cure for joints subject to normal building movement
  • Acoustically tested – reduces noise transmission
Applications
Properties
Autobonding
Low VOC
Paintable
STC Rating
Water Based
Smoke Barrier

Specifications

Property Value
Movement Capabilities (ASTM E1399) +/- 12.5%
L-Rating – Penetrations (Modified UL1479) < 1 CFM / Lin Ft.
L-Rating – Joints (Modified UL2079) < 1 CFM / Lin Ft.
Mold & Fungus Growth Rating (ASTM G21) 0
Flame Spread 5*
Smoke Development 0*
Drying Time Tack Free 2 Hrs
Dry Through 24 to 48 Hrs
STC Rating (ASTM E90-04/ASTM C919) 61 (Relates to Specific Construction)
VOC Content 30 g/L**
Notes *Tested to ASTM E84 (UL723) at 14% surface coverage (modified test for sealants and caulks) **Per SCAQMD Rule 1168 (EPA Method 24)

Ordering Information

Catalog Number UPC Number Description (UOM) Qty. Case Qty. Weight (Each) Image
SNS205 730573011553 Series SNS Smoke & Acoustical Spray - 5 Gallon pail 1,155 Cu In. (19.0 L) 1 1 55.48 lbs Series SNS Smoke & Acoustical Spray - 5 Gallon pail 1,155 Cu In. (19.0 L)
SpecSeal Smoke 'N' Sound Acoustical Spray
STI leads the industry in developing innovative fire protection systems that help stop the spread of fire, smoke and hot gases. For over 25 years, our team has worked hand in hand with the construction industry to create simple solutions to complex firestopping problems. Our SpecSeal® and EZ Path® product lines are engineered to deliver powerful performance. Because our system designs are user-driven, they are easier to apply. The result is simply designed, outstanding fire protection systems which often result in lower installed costs. STI products and systems offer innovative firestop solutions for all types of new construction and retrofit applications. Since firestopping is our only business, we concentrate all our resources on providing the highest quality, fully tested, innovative firestopping solutions.