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
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One-component elastomeric silicone firestop sealant.
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Designed for through-penetration firestop systems.
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Prevents spread of flames, smoke, gas, and water.
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Suitable for applications requiring dynamic movement.
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Flexible and non-slump formula.
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Neutral moisture cure with low odor.
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Excellent moisture resistance.
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Protected against mold growth with a combination of biocides.
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No mixing or additives required.
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STC rating of 55.
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FBC System Compatible for use with approved Flow Guard Gold, Blaze Master, and Corzan pipe and fittings.
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DOT classification: Not regulated.
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Available in caulk grade and self-leveling grades.
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Can be applied with caulking gun, trowel, or pumping equipment.
Common Applications
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Electrical penetrations.
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Plumbing penetrations.
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Telecommunications penetrations.
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Fire-rated gypsum wallboard partitions.
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Concrete block walls.
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Concrete walls and floors.
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Curtain wall and floor joint applications.
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Expansion joints.
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Contraction joints.
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Control joints.
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Interior and exterior firestop applications.
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Cable protection applications.
Product Information
| Specification | Details |
|---|---|
| Product Name | Metacaulk 835+ Elastomeric Silicone Firestop Sealant |
| Brand | Metacaulk |
| Sealant Type | One-component silicone-based firestop sealant |
| Application | Through-penetration firestop, joints, and fire-rated wall/floor penetrations |
| Available Grades | Caulk Grade and Self-Leveling |
| Cure Type | Neutral moisture cure |
| Color | — |
| Movement Capability | Designed for dynamic movement applications |
Available Product Options
| SKU | Product Name |
|---|---|
| 66295 | Metacaulk 835+ Spray, 5 gal Fast Cure Silicone |
| 66019 | Metacaulk 835+, 5 gal |
| 66300 | Metacaulk 835+ Caulk Grade, 20.2 oz Sausage |
| 66301 | Metacaulk 835+ Self Leveling, 20.2 oz Sausage |
| 66645 | Metacaulk 835+, 10.15 oz Cart |
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.