220AF Cold-Process System
The Karnak "220AF System" is the economical way of adding extra protection and new life to smooth surface asphalt roofs with surfaces that have deteriorated beyond simple correction. The Karnak "220Af System" when properly applied, provides a protective membrane layer resistent to roof temprature variations.
Easy to handle, #220Af fibered Emulsion Roof Coating (#220AF) with 3036 Poly-Mat (#3036) weighs only 1/7th as much as cumbersome roofing felts. The "220AF System" is fast, permenant and easy to apply.
The first step consists of applying a coating of #220Af and then while still wet embedding a layer of #3036. The mat is then top coated with another application of #220AF
Am optional but highly desirable feature of this system is the ability to accept an Energy Star labeled reflective coating such as Karnak #501 Elasto-Brite (#501) elastometric roof coating, Karnak #298 Alumin-R (#298) or Karnak #98AF Fibered Aluminum Roof Coating (#98AF) after only 5 to 10 days drying time. Krank #97af Fibered Aluminum Roof Coating (#97AF) can also be applied after 5 to 10 days in lieu of Energy Star labeled coating. Karnak #501, #298, #98Af and #97AF dry to a brilliant finish that reflect the hot rays of the sun providing U.V. protection and reduce surface temprature by as much as 75 F.
The Karnak "220AF System" will cover most compatible surfaces, which have become cracked, mildly alligatored or have weather-exposure related effects.
METHOD OF APPLICATION
Step 1: All surfaces must first be swept clean to remove all loose dust, dirt, or other foreign matter.
Step 2: Apply first coat of #220AF to the surface at a rate of 2 gallons per 100 sq. ft. and immediately imbed one ply of #3036 into the wet coating. Allow a twoinch overlap where one strip adjoins another and 6 inches on the end laps. The mat should be cut and end-lapped every 5â€™ â€“ 10â€™ to eliminate fishmouthing. Gently brush each strip of mat in place so the emulsion seeps through to form a monolithic surface.
Step 3: Apply a second coat of #220AF over the previously embedded mat at the rate of 3 gallons per 100 sq. ft. Smooth coating lightly with a brush and allow 24 hours for proper curing time.
Step 4: After a suitable time, 5 â€“ 10 days minimum or until surface can bear foot traffic, either Karnak #501 (in two coats) at the rate of 1 gallon per 100 sq. ft. per coat can be applied, Karnak #298 at 2 gallons per 100 sq. ft. or Karnak #98AF or #97AF can be applied at the rate of 1 â€“ 1.5 gallons per 100 sq. ft. for added protection against the ultra violet rays of the sun.
#220AF, #3036 Poly-Mat, #501 Elasto-Brite, #298 Alumin-R, #98AF Fibered Aluminum Roof Coating, #97AF Fibered Aluminum Roof Coating
DO NOT APPLY WHEN RAIN IS EXPECTED WITHIN 24 HOURS.
PROTECT FORM FREEZING. TEMPERATURE MUST BE ABOVE 45Â°F AND RISING BEFORE APPLYING #220AF COLD PROCESS SYSTEM.
Cut lengths of mat every 5 â€“ 10 feet to avoid wrinkles.
Keep wet rags handy.
Dip brushes in water if tacky when applying #220AF.
Do not apply #220AF when rain is imminent. Coating must be dried before exposure to water.
Protect from freezing. Temperature must be 45Â°F and rising before applying #220AF.
The dried material can be removed with Karna-Klean, mineral spirits or similar solvents, taking the due precaution necessary when handling flammable or combustible materials.