The RM Lucas #8400 Low Solids Silicone Roof Coating White 5 gal is a liquid applied systems from RM Lucas for exact-match material ordering. Match manufacturer model/MPN 8400-5. This variant is sold as 5G with SKU LUC84005. 100% silicone based Lucas #8400 is a single part roof coating that creates a barrier that is resistant to natural weathering, is durable, breathable, watertight and weatherproof.

Key Specs

• Brand: RM Lucas
• Model / MPN: 8400-5
• SKU: LUC84005
• Sell unit: 5G
• Product type: Liquid Applied Systems
• Size: 5 gal
• Color / finish: White
• Category: Commercial Roofing | Commercial Roofing/Membranes | Commercial Roofing/Membranes/Liquid Applied Systems

Key Features

• #8400 may be applied to TPO roofs with Lucas #8015 TPO Primer
• Available in Multiple Colors
• Available in 5 and 55 Gallon Containers

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 #8400 Low Solids Silicone Roof Coating White 5 gal, sold as 5G, SKU LUC84005, manufacturer model/MPN 8400-5.

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 LUC84005, 5G sell unit, and MPN 8400-5 match the job requirement.