The Karnak 502 RC-W Elasto-Kote Base Coat Gray 5 gal is a liquid applied systems for jobs that require Karnak model/MPN 502BP-5 in the 5G sell unit. 502 RC-W Elasto-Kote Base Coat is a self-priming, highly elastic, thermoplastic rubber, single component, coating with a built-in rust inhibitor to be applied as a base coat prior to applying 502 RC-W Elasto-Kote Finish Coat

Key Specs

• Brand: Karnak
• Model / MPN: 502BP-5
• SKU: KAR502BP5
• Sell unit: 5G
• Product type: Liquid Applied Systems
• Size / color: 5 gal
• Category: Commercial Roofing | Commercial Roofing/Membranes | Commercial Roofing/Membranes/Liquid Applied Systems
• Coverage / unit: 5 gal per listed unit

Key Features

• 502 RC-W Elasto-Kote Base Coat is intended for use on metal roofs (includes a rust inhibitor), spray polyurethane foam roofs, EPDM, TPO, and most PVC roof membranes
• 502 RC-W is also good over previously coated surfaces as well as for coating concrete, concrete block, brick, cinder block, stucco and wood
• Available in 5-gallon pails and 55-gallon drums

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 liquid applied systems, pack size, color, membrane/system family, or installation condition without checking the manufacturer instructions.

FAQs

What exactly am I ordering?

Karnak 502 RC-W Elasto-Kote Base Coat Gray 5 gal, sold as 5G, with SKU KAR502BP5 and manufacturer model/MPN 502BP-5.

What model or part number should I match?

Match model/MPN 502BP-5 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.

Verify the manufacturer instructions, local code, and project specification before installation or substitution.

Product Expert Notes

Choose this item when Karnak model/MPN 502BP-5, SKU KAR502BP5, and the 5G sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.