Karnak Corporation, a family-owned manufacturer founded in 1933, produces asphaltic and elastomeric roof coatings, cements, and cool-roof systems from plants in New Jersey and distribution points nationwide. Its restoration line runs from the 501 Elasto-Brite acrylic and 670HS Karna-Sil Ultra high-solids silicone to a deep asphalt-aluminum catalog (97 Fibered Aluminum, 298 Alumin-R) sold through roofing distributors plus Home Depot and Lowe's. Retail SKUs carry limited warranties up to 10 years, and commercial cool-roof systems hold Miami-Dade, ASTM D6083/D6694, and CRRC listings.
Coating products & published specs.
670HS Karna-Sil Ultra Silicone Coating
Silicone
- CoverageSingle coat 1.5 gal/100 sq ft (24 wet mils)
- Solids91% by volume
- Film build24 wet mils per 1.5 gal/sq coat
- WarrantyKarnak system warranties via approved applicators
Full specs & data sheet
Application
Coverage: Single coat 1.5 gal/100 sq ft (24 wet mils); up to 3 gal/sq on approved horizontal substrates; over 180 epoxy primer or 400-series base coat as specified
Film build: 24 wet mils per 1.5 gal/sq coat
Physical properties
Solids: 91% by volume
- Moisture-cure
- solids 91% vol / 94% wt
- tensile 227 psi @73F / 317 psi @0F (D2370)
- elongation 212% @73F
- reflectance 0.87 initial / 0.70 3-yr
- low VOC
- Miami-Dade
- meets ASTM D6694
Warranty
Karnak system warranties via approved applicators; retail limited warranty
501 Elasto-Brite Acrylic Coating
Acrylic
- Coverage1.5 gal/100 sq ft per coat, two coats, 3 gal/100 sq ft total
- Solids53% by volume
- Film build20-24 dry mils total system
- Warranty10-year limited warranty (retail)
Full specs & data sheet
Application
Coverage: 1.5 gal/100 sq ft per coat, two coats, 3 gal/100 sq ft total
Film build: 20-24 dry mils total system
Physical properties
Solids: 53% by volume
- Co-polymer 100% acrylic emulsion
- tensile 259 psi (D2370)
- elongation 237%
- solids 53% vol / 63% wt
- reflectance 0.86 initial / 0.77 3-yr
- ASTM D6083 Type I
- VOC 42 g/L max
Warranty
10-year limited warranty (retail); Karnak commercial system warranties available
298 Alumin-R Fibered Aluminum Coating
Aluminum
- Coverage1.5-2 gal/100 sq ft (24-32 wet mils) in one application
- Solids47% by volume
- Film build24-32 wet mils single coat
- WarrantyKarnak limited product warranty
Full specs & data sheet
Application
Coverage: 1.5-2 gal/100 sq ft (24-32 wet mils) in one application
Film build: 24-32 wet mils single coat
Physical properties
Solids: 47% by volume
- Fibered asphalt-aluminum reflective coating
- elongation 300% (D412)
- weight 8.5 lb/gal
- cure 24-48 hrs
- service range -40F to 180F
- reflective silver finish for BUR, mod-bit, and metal
Warranty
Karnak limited product warranty
*Approximate street prices from public listings at time of research. Actual pricing varies by distributor, region, and volume — always confirm current pricing.
Where to buy Karnak coatings.
Asphaltic and aluminum coatings stocked at Home Depot; full pro line (including 505 elastomeric) through roofing distributors like Beacon.
Find your Karnak rep.
- West — Tyson Smith, Regional Manager — 480-620-9385 — tsmith@karnakcorp.com
- Mountain & Canada / Midwest — John McDermott, Regional Manager — 630-240-7527 — jmcdermott@karnakcorp.com
- Central / South — Josh Hissom, Regional Manager — 910-548-6046 — jhissom@karnakcorp.com
- Northeast — Todd Harris, Regional Manager — 516-983-3076 — tharris@karnakcorp.com
- South (FL) — Joe Prussel, Regional Manager — 321-508-6064 — jprussel@karnakcorp.com
✓ From Karnak’s published roster · verified August 2026
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