Carlisle Coatings Waterproofing 325804 Foil Mastic Tape 3in

Product Description

The CARLISLE COATINGS WATERPROOFING 325804 is a 3-inch foil mastic tape designed for sealing and waterproofing applications in construction and mechanical systems. This tape combines a metallic foil facing with a mastic adhesive backing to create a durable, conformable seal on irregular or rough surfaces. It is typically installed by roofing contractors, waterproofing specialists, and HVAC technicians where a weather-resistant, vapor-retarding bond is required. The 3-inch width suits standard seam and penetration sealing tasks encountered on commercial and residential jobsites.

Foil mastic tape of this type is commonly used to seal seams on ductwork, roof flashings, vapor barriers, and waterproofing membranes. It performs well in applications where a standard pressure-sensitive tape would not conform adequately to surface irregularities. The mastic adhesive layer bridges gaps and adheres to metal, concrete, masonry, and insulation board substrates, making it a versatile choice across roofing, below-grade waterproofing, and mechanical insulation scopes of work.

Key Features

• 3-inch width suits standard seam sealing and penetration flashing tasks
• Foil facing provides weather resistance and vapor retardancy
• Mastic adhesive conforms to irregular and rough substrate surfaces
• Suitable for use on metal, masonry, concrete, and insulation board
• Applicable across roofing, waterproofing, and HVAC duct sealing scopes

Compatibility

Designed as an OEM-style replacement and general-use foil mastic tape suitable for duct sealing, roofing membrane seam work, and waterproofing applications where a conformable foil-backed mastic product is specified.

Installation Notes

Foil mastic tape should be installed by qualified roofing, waterproofing, or HVAC personnel following applicable local building codes and manufacturer surface preparation requirements. Substrates must be clean, dry, and free of dust, oil, and loose material before tape application to ensure proper adhesion. Press the tape firmly into place, working out air bubbles from the center toward the edges. Do not apply to wet or frozen surfaces, as adhesion will be compromised.

Technical Specifications

• Width: 3 inches
• Facing Material: Foil
• Adhesive Type: Mastic

Standard Information

• Brand: CARLISLE COATINGS WATERPROOFING
• Manufacturer Part Number: 325804