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Firestop Sealant w/Sausage Gun, Biostop BF 150+, 20 oz Rectorseal 66514

Firestop Sealant w/Sausage Gun, Biostop BF 150+, 20 oz Rectorseal 66514

Product Description

Biostop® BF150+, General Purpose Firestop Sealant with AWF Pro Sausage Caulking Gun, 20.2 oz Foil Pack Sausage

Biostop® BF150+ is a one component, general purpose fire-rated sealant and smoke seal for construction joints and through-penetrations. When used to fill openings and gaps Biostop® BF 150+ blocks the spread of flames, smoke, and gas from one room to another.  Biostop® BF 150+ can be used on top of the wall construction joints, deflection track wall systems, and various penetrations such as EMT, telephone and power cables in concrete, gypsum walls and wood floors. Biostop® BF 150+ is a water based, non-sag caulking grade sealant that is easy to apply as well as to retrofit and may be applied with a caulking gun or trowel.  Biostop® BF 150+ cures to an elastomeric seal that returns to its original shape and is suitable where building components can move in relationship each other.

When installed properly along with floor, wall, or ceiling substrates and the materials that penetrate a wall, Biostop® acts as an integral part of a properly tested and UL rated firestop system. These materials act as passive containment or compartmentation to isolate and prevent gases, smoke and flame from taking the path of least resistance and passing into adjacent areas. This gives occupants the greatest chance to leave the area safe and unharmed.

Your choice of 6 or 12 pieces 20.2 oz Foil Pack Sausage with our AWF PRO Sausage Caulking Gun.



Biostop® BF 150+ features

  • Water Based
  • Excellent Freeze-Thaw
  • Flexible Set
  • Paintable
  • VOC Compliant
  • Safe and Easy to Use
  • Intumescent (Expands when Heated)



Technical Information

ASTM E 84, UL 723 Tunnel Test:

  • Flame Spread: 10
  • Smoke Index: 0

STC 51

Technical Resources:

Biostop® BF 150+ Product Data Sheet

Biostop® BF 150+ Safety Data Sheet



UL Listed Systems

UL Listed Systems

Technical references for Biostop® BF 150+ used in conjunction with other building materials.

UL Listed Systems employing Biostop® BF 150+




Firestop Installations


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