Skip to main content
Translate
Default
English
Español
Français

Sign Up for Our E-News!

Join over 18,000 other roofers who get the Week in Roofing for a recap of this week's best industry posts!

Sign Up
HS Exit Advisors -  - Blueprint eBook
Van Mark Products -  Ad - OctNov2026 Rebates
IFD - Building Roofing
Project Map It -  Ad - Close More Roofing Jobs With Project Map It
Adtaxi -  - Webinar
RIIG -  Ad - AI Integrated Solutions
Translate
Default
English
Español
Français

502MS Karna-Flex Sealant

KARNAK - Karna Flex - Product Shot
August 19, 2026 at 12:32 p.m.

 

502MS Karna-Flex is a rubberized thermoplastic sealant to repair leaks on ALL types of roofs including properly prepared single-ply, PVC, TPO, metal, concrete, spray-polyurethane foam, plywood, asphalt, BUR and modified bitumen. Designed for long-term performance, 502MS works on dry surfaces and even under water. 502MS can be applied in cold temperatures. Other uses include leak repairs around skylights, gutters, downspouts, pinholes in metal and to waterproof around metal roof fasteners. 502MS is easy to apply due to its’ butter-like consistency. It can be brushed or troweled.

Advantages

  • One component—no need to intermix with other materials
  • Easy application by brush or caulking gun
  • Superior film—forms a durable, weather resistant elastomeric membrane
  • Has superior adhesive and cohesive strength
  • Low temperature flexibility—specially selected polymers and resins impart superior low temperature properties to the coating
  • Adheres to wet or dry surfaces

Learn more about 502MS and find a retailer near you!

Elevate - Banner Ad - Award-Winning Max PVC
Translate
Default
English
Español
Français

Sign Up for Our E-News!

Join over 18,000 other roofers who get the Week in Roofing for a recap of this week's best industry posts!

Sign Up
Johns Manville -  - Lunch&Learn Roofing Partnerships
Johns Manville -  Ad - Recursos en Español
SRS -  Ad (En Espanol Page) - Roof Hub
TandoComposites -  - TandoStone
ASC Building Materials -  - Coatings
SRS -  Ad - Bucket Awareness 2026