Henry Co HE289004 White Roof Sealant 10 Oz Cartridge

Product Description

The HENRY CO HE289004 is a water-based fibered white mastic roof sealant packaged in a 10 oz cartridge. It is formulated without asbestos and is designed for sealing penetrations, flashings, and transitions on low-slope and residential roofing systems. A key application requirement sets this sealant apart: it is the correct choice when the finished surface will be covered with an elastomeric coating. Licensed roofing contractors and HVAC technicians performing rooftop equipment work are the primary installers. The fibered mastic body provides flexibility and adhesion across a range of common roofing substrates.

This sealant is suited for residential and light commercial roofing applications. It is applied around skylights, roof vents, roof jacks, and rooftop air conditioning units where a watertight seal is required at penetrations and equipment bases. It also performs well around windows, doors, and downspouts where exterior weatherproofing is needed. The white color allows it to blend with elastomeric and reflective roof coatings. The cartridge format is compatible with standard caulk guns, making it practical for field use.

Key Features

• Water-based formula with fibered mastic body for flexibility and adhesion
• Non-asbestos construction meets current safety and material standards
• White color is compatible with and designed for use under elastomeric roof coatings
• 10 oz cartridge fits standard caulk guns for straightforward field application
• Suitable for sealing around skylights, roof vents, roof jacks, and rooftop HVAC equipment
• Also applicable around windows, doors, and downspouts for exterior weatherproofing

Compatibility

Designed for use on residential and light commercial roofing systems where an elastomeric topcoat will be applied. Suitable for penetrations and transitions involving skylights, roof vents, roof jacks, air conditioning units, windows, doors, and downspouts.

Installation Notes

Application is performed by roofing contractors or HVAC technicians working on rooftop equipment. Clean and dry the substrate thoroughly before applying sealant to ensure proper adhesion. Allow adequate cure time before applying any elastomeric topcoat per the topcoat manufacturer's instructions. Follow all applicable local building codes and safety requirements when working at elevation.