/ Through Penetrations firestop wall / floor

Smoke and Acoustic Sealant

Firestop Product Information:

RectorSeal Smoke and Acoustic Sealant is high grade acrylic latex sealant formulated to provide a seal for penetrations, membrane openings, and static or dynamic joints in smoke or sound rated assemblies. RectorSeal Smoke and Acoustic Sealant provides an excellent sound attenuation characterisitics in accordance with ASTM E90 and reduces the movement of smoke and airborne particles as demonstrated in air leakage testing modified UL 1479 and modified UL 2079. Available in caulk and spray grade. STC rating 69.

Firestop Additional Information:

RectorSeal Smoke and Acoustic Sealant has been tested in accordance  to the following standards:ASTM E84,  ASTM E90, ASTM E1399, and tested for  air leakage in accordance to modified UL 1479 and modified UL 2079. RectorSeal Smoke and Acoustic Sealant meets the requirements for LEED criteria under Environmental  Air Quality and Regional Materials. RectorSeal Smoke and Acoustic Sealant is protected in a wet stage as well as in a dry stage against mold growth with a combination of biocides.

Firestop Product Document Downloads:


Firestop Key Features:

  • Creates an effective barrier to mitigate smoke and toxic gas spread
  • Helps minimize sound transfer
  • +/- 33% movement capability
  • An effective draftsop
  • Re-enterable / repairable
  • Sag-resistant formulation
  • Cleans up with water
  • Paintabile

Firestop Typical Applications:

Use RectorSeal Smoke and Acoustic 
Sealant for various applications: 


  • Metallic and nonmetallic pipes
  • Outlet and receptacle boxes
  • Membrane penetrations
  • Head of wall
  • Bottom of wall
  • Wall to wall joints