The RM Lucas #779 All-Weather Flashing Cement 5 gal Mid-Season Grade is a multisystem accessories from RM Lucas for exact-match material ordering. Match manufacturer model/MPN 779M-5. This variant is sold as 5G with SKU LUC7795. Lucas #779 All-Weather Flashing Cement is a premium grade trowel-applied Flashing Cement used to install, repair or rebuild roof flashings at parapet walls, gravel stops, stacks, vents, monitors and similar applications

Key Specs

• Brand: RM Lucas
• Model / MPN: 779M-5
• SKU: LUC7795
• Sell unit: 5G
• Product type: Multisystem Accessories
• Size: 5 gal Mid-Season Grade
• Color / finish: 5 gal Mid-Season Grade
• Category: Commercial Roofing | Commercial Roofing/Commercial Roofing Accessories | Commercial Roofing/Commercial Roofing Accessories/Multisystem Accessories

Key Features

• #779 may be used with fiberglass, polyester fabrics or roll roofing for permanent repairs
• This product is may be applied to wet and underwater surfaces
• #779 All Weather Flashing Cement is manufactured from higher softening point asphalt, petroleum solvents, reinforcing fibers and a special water displacing additive. It applies fast and smooth and breaks cleanly off the trowel without stringing.

Coverage & How Much You Need

Confirm coverage/yield from the manufacturer instructions and job takeoff before ordering.

Compatibility / Fitment

Use only with compatible systems and installation conditions specified by the manufacturer.

FAQs

What exactly am I ordering?

RM Lucas #779 All-Weather Flashing Cement 5 gal Mid-Season Grade, sold as 5G, SKU LUC7795, manufacturer model/MPN 779M-5.

What unit is the price based on?

The price is for the 5G sell unit.

What should I match before ordering?

Match brand, model/MPN where available, size/color, sell unit, and the project specification.

Can this be substituted?

Treat this as an exact-match building material selection; hold for review before substituting a different model, color, size, or system family.

How do I estimate quantity?

Use the project takeoff plus manufacturer installation instructions, including waste, overlap, and accessory requirements.

Follow manufacturer instructions, OSHA-safe work practices, local code, and project specifications.

Product Expert Notes

Choose this variant when RM Lucas, SKU LUC7795, 5G sell unit, and MPN 779M-5 match the job requirement.