Bostik Chem-Calk 2020 White Hybrid Sealant, 20 Oz Sausage Case

Description

Chem-Calk 2020 is a white, one-component hybrid sealant supplied in 20 oz sausages for exterior trim, siding, masonry, wood, aluminum, and mixed-material joints. It gives installers a non-sag bead with Class 50 movement for vertical construction details that need flexibility and clean paint acceptance.

Chem-Calk 2020 Benefits

• Moisture-curing hybrid chemistry supports flexible joints on vinyl trim and dissimilar building materials.
• Class 50 movement rating gives contractors room for expansion and contraction in properly designed joints.
• Non-sag consistency helps the bead stay placed on vertical siding, trim, and metal details.
• White color and non-yellowing profile fit visible exterior work where appearance matters.
• Twenty ounce sausage packaging reduces cartridge changes on larger trim and siding jobs.

The product data lists use on stone, masonry, wood, engineered wood, hardboard, aluminum, other metals, vinyl siding, and vinyl trim board. Pretest coatings over the cured sealant, especially when the paint film needs to move with the joint.

Chem-Calk 2020 Applications

• Vinyl siding and vinyl trim board perimeter joints.
• Window, door, fascia, and exterior trim sealing.
• Masonry, stone, wood, aluminum, and mixed-material building joints.
• Vertical construction joints where a gun-grade, non-sag bead is required.
• Jobsite sealing where white color and paint compatibility are part of the finish plan.

Surface Preparation and Use

Start with dry, sound surfaces free of oil, release agents, frost, dust, and loose coating. Cut the sausage nozzle to the joint size, gun the material with steady pressure, and tool before skin forms so the bead wets both sides of the joint. Use backer rod where needed to control depth and keep three-sided adhesion out of the joint design.

Technical Details and Documentation

Published data lists ASTM C920 Type S, Grade NS, Class 50, Use NT, A and M, plus Federal Specification TT-S-00230C Type II, Class A. For manufacturer background, visit Bostik. Review the technical data sheet before approving paint timing, primer use, movement capacity, or exposure conditions.

Dispensing and Ordering Help

This SKU is the white 20 oz sausage format packed 12 per case. Use a sausage gun sized for 20 oz packs and confirm color, joint width, and substrate mix before switching from a cartridge product. For related exterior products, browse Chemical Concepts sealants.

For help matching Bostik sealants to trim, siding, or building envelope work, call (800) 220-1966 or email [email protected].