These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
EZ-Path Series 44NEZ Smoke & Acoustical Pathway provides exceptional leakage and acoustical performance with tested and approved cable capacities ranging from 0 up to 100% visual fill
These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
EZ-Path Series 44NEZ Smoke & Acoustical Pathway provides exceptional leakage and acoustical performance with tested and approved cable capacities ranging from 0 up to 100% visual fill
These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
EZ-Path Series 44NEZ Smoke & Acoustical Pathway provides exceptional leakage and acoustical performance with tested and approved cable capacities ranging from 0 up to 100% visual fill
These intumescent urethane foam blocks are installed in openings by compressing and stacking into the opening in a brick-like fashion. The intumescent block expands in high temperatures to impede fire, smoke, and gas passage.
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.
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
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.
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.