The Karnak 19 Flashing Cement 5 gal Semi Grade is a multisystem accessories for jobs that require Karnak model/MPN 19-5-SEMI in the 5G sell unit. Karnak 19 flashing cement is a scientifically compounded composition of selected asphalts, mineral fibers and refined solvents that are manufactured to a heavy consistency for application by trowel to provide a durable, elastic-coating of excellent adhesion and high resistance to water and weathering.

Key Specs

• Brand: Karnak
• Model / MPN: 19-5-SEMI
• SKU: KAR195
• Sell unit: 5G
• Product type: Multisystem Accessories
• Size / color: 3 gal Summer Grade
• Category: Commercial Roofing | Commercial Roofing/Commercial Roofing Accessories | Commercial Roofing/Commercial Roofing Accessories/Multisystem Accessories
• Coverage / unit: 5 gal per listed unit

Key Features

• A smooth, heavy trowel consistency which will readily spread on and adhere to vertical and horizontal surfaces without sagging
• Uniform, excellent adhesion to masonry, steel, cured concrete, shingles, asphalt roofing and a variety of other surfaces
• The dried film retains its flexibility and ductility so that the coating will resist extreme variations in temperature and weather

Coverage & How Much You Need

This item is listed as 5 gal per listed unit. Use the project takeoff, manufacturer installation instructions, and expected waste/overlap to confirm the order quantity.

Compatibility / Fitment

Use this item only when the brand, model/MPN, size/color, sell unit, and system type match the project specification. Do not substitute it for a different multisystem accessories, pack size, color, membrane/system family, or installation condition without checking the manufacturer instructions.

FAQs

What exactly am I ordering?

Karnak 19 Flashing Cement 5 gal Semi Grade, sold as 5G, with SKU KAR195 and manufacturer model/MPN 19-5-SEMI.

What model or part number should I match?

Match model/MPN 19-5-SEMI and confirm the brand is Karnak. If the job spec lists a different model, size, color, or system family, hold for review.

What unit is the price based on?

This listing is built around the 5G sell unit. Confirm the unit before comparing price, quantity, or coverage.

How do I estimate quantity?

Use 5 gal per listed unit, then add waste or overlap per the manufacturer instructions and the project design.

What should be checked before purchase?

Confirm the model/MPN, sell unit, size/color, jobsite condition, compatible system components, and any manufacturer installation limits before approving the order.

Roofing and exterior-envelope work can involve fall hazards, weather exposure, fumes, adhesives, and system-specific installation requirements; follow the manufacturer instructions, OSHA-safe work practices, and local code or use a qualified contractor.

Product Expert Notes

Choose this item when Karnak model/MPN 19-5-SEMI, SKU KAR195, and the 5G sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.