Metacaulk 835+ Firestop Silicone Sealant

Metacaulk 835+ Elastomeric Silicone Firestop Sealant

The Metacaulk 835+ Elastomeric Silicone Firestop Sealant is a one-component, fire-rated silicone sealant designed for through-penetration firestop applications. It prevents the spread of flames, smoke, gas, and water through penetration openings while providing flexibility for systems where dynamic movement is expected.

Silicone-based and moisture-cured, Metacaulk 835+ provides excellent durability, moisture resistance, and movement capability. It is suitable for interior and exterior applications, including expansion joints, contraction joints, control joints, and penetrations in fire-rated walls and floors.

Key Features

• One-component elastomeric silicone firestop sealant.

• Designed for through-penetration firestop systems.

• Prevents spread of flames, smoke, gas, and water.

• Suitable for applications requiring dynamic movement.

• Flexible and non-slump formula.

• Neutral moisture cure with low odor.

• Excellent moisture resistance.

• Protected against mold growth with a combination of biocides.

• No mixing or additives required.

• STC rating of 55.

• FBC System Compatible for use with approved Flow Guard Gold, Blaze Master, and Corzan pipe and fittings.

• DOT classification: Not regulated.

• Available in caulk grade and self-leveling grades.

• Can be applied with caulking gun, trowel, or pumping equipment.

Common Applications

• Electrical penetrations.

• Plumbing penetrations.

• Telecommunications penetrations.

• Fire-rated gypsum wallboard partitions.

• Concrete block walls.

• Concrete walls and floors.

• Curtain wall and floor joint applications.

• Expansion joints.

• Contraction joints.

• Control joints.

• Interior and exterior firestop applications.

• Cable protection applications.

Product Information

Available Product Options

Frequently Asked Questions (FAQ)

Q1. What is Metacaulk 835+ used for?
Metacaulk 835+ is used for firestopping through-penetration openings, joints, and penetrations involving electrical, plumbing, and telecommunications systems.

Q2. What makes Metacaulk 835+ different from standard firestop sealants?
Its silicone-based elastomeric formula provides flexibility and movement capability, making it suitable for applications where expansion, contraction, or dynamic movement is expected.

Q3. Can Metacaulk 835+ be used outdoors?
Yes. It can be used for approved interior and exterior applications, including expansion, contraction, and control joints.

Q4. Does Metacaulk 835+ require mixing before installation?
No. It is a single-component sealant that requires no mixing or additional additives.

Q5. What application methods can be used with Metacaulk 835+?
It can be applied using a conventional caulking gun, trowel, or pumping equipment depending on the product grade and application requirements.