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KARNAK Reflective Coatings, Sealants and Cements

KARNAK manufactures and supplies reflective coatings, cement, and sealants for roofing and waterproofing. It provides roofing products, damp-proofing and waterproofing products, fabrics and repair tapes, caulks, sealant and flooring products, and elastomeric products. The company serves architects, specifiers, contractors, distributors and building owners in the United States, the Caribbean, Latin America, the Middle East, Europe and Asia. It markets and sells its products through sales representatives in the United States and internationally. The company was founded in 1932 and is based in Clark, New Jersey.

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LIVE From IRE 2026 with Karnak!

671 Karna-Seal

Karnak is making roof maintenance more efficient with new packaging options for 671 Karna-Seal. Known for its single-component, moisture-curing, 100% silicone formulation, 671 Karna-Seal delivers excellent UV resistance, flexibility and tensile strength while resisting weathering, chalking, cracking and hardening.

Now available in 2-liter pouches and 10.1-ounce caulk tubes, Karna-Seal 671 is easier to handle and ideal for targeted repairs and routine maintenance. The smaller packaging helps reduce waste, improves crew efficiency and extends product shelf life after opening. Alongside traditional 2.5-gallon buckets, these new options give contractors greater flexibility to match the right package to the job.

Karnak is giving contractors a hands-on way to experience the efficiency of its updated 671 Karna-Seal packaging. As part of a limited giveaway, contractors can receive a free 10.1-ounce caulk tube of 671 Karna-Seal to see how the smaller format supports faster, cleaner repairs on real jobsites.

Get your 671 Karna-Seal here!

Achieve Growth With Service and Maintenance

In this CoatingsTalk, Megan Ellsworth is joined by Chris Huettig and John McDermott from KARNAK to discuss why roof maintenance is essential and how coatings contractors can successfully sell repair and maintenance services. Chris and John will break down the financial and customer benefits of offering maintenance, how to position it as a valuable service, and strategies for getting customers on board. From increasing profits and providing steady work to becoming a trusted partner for building owners, roof maintenance can be a game-changer for contractors.

Tune in to learn how to make maintenance a key part of your business!

Watch on YouTube.

Karnak Live from RCAT

RoofersCoffeeShop caught up with KARNAK at the Roofing Contractor Assosiation of Texas Expo to see what exciting things they were showing off at the show.

Watch on YouTube.

Q Applicator Program

The Karnak Qualified Applicator program is a select membership program that provides training for you and your business associates on the latest KARNAK repair and restoration solutions. The preferred relationship between you and Karnak, comes with a variety of complimentary benefits improving your application quality, productivity and profitability, while saving money for your clients.
‍
Apply to become a Q-qualified applicator.

Find a Karnak Q-qualified applicator near you.

502MS Karna-Flex Sealant

502MS Karna-Flex is an elastomeric, thermoplastic-rubber sealant formulated for use on built-up asphalt roofs, modified bitumen membranes and properly prepared metal, concrete, EPDM, TPO, and most PVC membrane as well as spray polyurethane foam and plywood roof substrates. Its ease of application, superior adhesion, elasticity and durability make 502MS Karna-Flex an ideal repair sealant.

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

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Latest Promotions and Rebates

Get a Free KARNAK 671 Karna-seal Tube!

Karnak is giving contractors a hands-on way to experience the efficiency of its updated 671 Karna-Seal packaging. As part of a limited giveaway, contractors can receive a free 10.1-ounce caulk tube of 671 Karna-Seal to see how the smaller format supports faster, cleaner repairs on real jobsites. The single-component, moisture-curing ...
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Latest Spanish Content

Celebrando la comunidad en la industria en la recepción de EmpowerAll.

Por Jessica Bravo. ¡Conéctense, compartan y celebren juntos la industria en la recepción de EmpowerAll durante IRE 2026! Están invitados a la recepción EmpowerAll, un evento donde se celebra la comunidad en la industria del techado. Se llevará a cabo el martes 20 de enero de 2026, de 4:00 ...
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Por Emma Peterson, traducido por Jessica Bravo. Desde herramientas hasta cursos de capacitación, el equipo de The Coffee Shops™ reúne los regalos perfectos para los profesionales del techado en esta guía para dar en grande esta temporada. Si tu año ha sido como el nuestro aquí en The Coffee ...
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Latest Podcasts

KARNAK - CoatingsTalk Efficiency - Watch - Podcast

Cutting Time Not Corners: Efficiency in Maintenance

In this CoatingsTalk™, Megan Ellsworth is joined by Chris Huettig from KARNAK and Tracey Donels from Service First Solutions to talk about how a commercial roof maintenance department should be set up to maximize efficiency while delivering a longer roof life to customers. The panel examines how dedicated maintenance programs ...
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KARNAK -Challenges in Restoration PT 3 Specifiers - Podcast

Challenges in Restoration Part 3: Manufacturers

In this episode of CoatingsCast™, Megan Ellsworth is joined by John McDermott from KARNAK to explore the restoration trends are reshaping the roofing industry and what that means for manufacturers and contractors alike. John shares how a legacy company like KARNAK continues to evolve by embracing innovation while maintaining the ...
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KARNAK - CoatingsCast - Pt 2 Specifiers - Podcast

Challenges in Restoration Part 2: Specifiers

In this episode of CoatingsCast™ Megan Ellsworth is joined by Daniel King from Clarity Roof Consulting as well as Chris Huettig and John McDermott from KARNAK to dig into the unique challenges specifiers face on roof restoration projects. From navigating complex regulations and insurance requirements to managing the impact of ...
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Latest Webinars

CoatingsCoffeeShop Coffee Conversations - The Association in Your Coatings Corner

In this first-ever episode of Coffee Conversations on CoatingsCoffeeShop, we're shining a spotlight on the association that supports this ever-growing industry – the Roof Coatings Manufacturers Association (RCMA)! Join our panel as they discuss the myriad benefits these organizations offer to both contractors and manufacturers. We'll also provide an insightful ...
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Latest Lunch & Learn

KARNAK - Lunch & Learn - Fluid Applied - SM

Fluid Applied Restoration 101

In this CoatingsCoffeeShop Lunch & Learn, Chris Huettig from KARNAK provides a practical look at how contractors assess aging roofs and make informed decisions between restoration and reroofing. Learn how to factor in roof composition, penetrations, environmental conditions, customer budgets and contractor capabilities to determine the best path forward. We’ll ...
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KARNAK - CoatingsTalk Efficiency - Watch - SM

Cutting Time Not Corners: Efficiency in Maintenance

Karnak-CoatingsTalk-AchieveGrowth-Watch-SM

Achieve Growth With Service and Maintenance

Seal the Deal: Mastering Maintenance and Single-Ply

In this CoatingsTalk, Megan Ellsworth sits down with Chris Huettig and John McDermott from KARNAK to explore the evolution of single-ply roofing and why maintenance is key to longevity. Learn how proper preparation, smart sealant choices and effective service strategies can prevent callbacks, save time and strengthen building owner relationships. ...
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Latest Classifieds

671 Karna-Seal

Keep roofing even in the harshest weather on all types of roof surfaces. 671 Karna-Seal is a single-component, moisture curing, 100% silicone roof sealant that offers excellent UV resistance, flexibility, and tensile strength. 671 Karna-Seal resists weathering, hardening, chalking, and cracking. Learn more!
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Buy Online

Karnak is making roof maintenance more efficient with new packaging options for 671 Karna-Seal. Known for its single-component, moisture-curing, 100% silicone formulation, 671 Karna-Seal delivers excellent UV resistance, flexibility, and tensile strength while resisting weathering, chalking, cracking, and hardening. Now available in 2-liter pouches and 10.1-ounce caulk tubes, Karna-Seal 671 is ...
Read More

720 EPDM Rubber Granules, yellow in color are used to create slip-resistant walkways and surfaces when installed in combination with elastomeric roof coatings. Categories: Accessories/Misc Available Sizes 55 lb. kraft bags Advantages: Yellow-colored EPDM rubber used to create slip-resistant walkways and surfaces when installed in combination with elastomeric roof coatings Will not puncture membrane, while ...
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Latest Videos

KARNAK Trade Show Video Playlist

Learn more about KARNAK by visiting their Coffee Shop Directory. Subscribe to KARNAK's YouTube Channel. LIVE From IRE 2026 with Karnak!
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The Weekly Blend - Episode 194

Join us every week to learn the latest news in the roofing, metal, coatings and outdoor living industry. The 194th episode of The Weekly Blend is live! Join The Coffee Shops’ President Heidi Ellsworth and COO Karen Edwards for the latest episode of this Coffee Shop original web series. Tune in to ...
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