Karnak - 27 Perfectseal Fibered Aluminum Exterior Coating, 5 gallon

A reflective aluminum‑enhanced roof coating—Karnak 27 Fibered Perfectseal forms a metallic shield atop your roof surface, reflecting sunlight to protect underlying asphaltic materials from heat degradation. Infused with reinforcing fibers, it offers steadfast adhesion and thermal resistance, reducing repairs and extending roof lifespan while helping lower building temperatures during hot seasons.

Key Features

• Forms a reflective, self-protecting shield by aluminum flake leafing to the surface
• Reflects over 50% of solar radiation, reducing heat-induced wear on asphalt oils
• Offers thermal resistance and longer roof life with minimal surface cracking
• Helps lower indoor temperatures through increased roof reflectivity

Packaging: 5‑gallon pail (also available in 55‑gallon drum)

• 5-gallon Pail = 42/Pallet
• 55-gallon Drum = 4/Pallet

Application temperature: 50 °F and rising up to 120 °F (no thinning allowed)

Coverage rate: approximately 1 to 1.5 gallons per 100 sq ft

Composition: asphaltic binder with aluminum flakes and mineral fiber reinforcement

Application methods: soft roof brush, roller, or spray; ensure thorough mechanical mixing prior to use

* This item is hazmat *

• Prepare the surface: clean, dry, and free from dust, dirt, oil, blisters, and loose material.
• If applying over aged or deteriorated surfaces, prime with appropriate emulsion (e.g., 100 Non-Fibered or 220 Fibered Emulsion) and allow to cure.
• Mechanically mix the coating thoroughly until uniform.
• Apply using a soft roof brush, roller, or spray at a rate of 1 to 1.5 gallons per 100 sq ft—do not overwork the coating to preserve the aluminum leafing effect.
• Avoid application when rain is expected within 24‑48 hours; over applied coating, ensure proper curing.
• Clean tools with mineral spirits and maintain proper ventilation during application.

Q: What substrate conditions are required before application?
A: Surfaces must be clean, dry, and free from contaminants or damage. Aged surfaces may require priming and proper drying before coating.

Q: How much coverage can I expect?
A: The coating covers approximately 1 to 1.5 gallons per 100 sq ft per coat.

Q: Can I apply this over new modified bitumen or metal roofing immediately?
A: New torch-applied or smooth BUR surfaces should weather per manufacturer guidance. Newly installed metal roofs should also weather approximately 30 days before coating.

Q: Can the coating be applied if rain is expected soon?
A: No—application should precede a dry period of at least 24‑48 hours to ensure proper curing and leafing.

Q: How is this coating particularly beneficial in hot climates?
A: The aluminum leaf reflects sunlight, protecting asphaltic components from heat degradation and reducing interior temperatures.