YES! Please contact KARNAK Corporation for Warranty information.
KARNAK realizes that from time to time the need arises for KARNAK materials to be applied by an approved applicator. KARNAK does recognize the ability of applicators that install KARNAK products if they have been doing such installations for at least three (3) years. This is with the understanding that the KARNAK materials are installed in accordance with KARNAK’s specifications.
KARNAK products are available through a variety of distributors in the U.S. and overseas. Please contact KARNAK for your nearest distributor: Phone 1-800-526-4236, 1-732-388-0300, Fax 1-732-388-9422 or email KARNAK info@KARNAKcorp.com.
The dry or cure time for KARNAK products depends on the specific product used and the outside ambient temperature. For the most part, KARNAK brush or spray grade coatings will dry in 24 hours. KARNAK flashing cements and mastics, will “skin” over in 24 hours, but take longer to fully dry because they are applied at a heavier rate than spray or brush grade coatings.
KARNAK products should not be applied if rain is imminent within 24 hours. The exception to this is KARNAK’s #155, #155AF Amphikote and #19 Ultra Rubberized Flashing Cement, these products are designed to be used in either wet or dry conditions, thereby making them ideal for use as emergency repair situations.
24 to 48 hours, if surface is fully dry.
Consult MSDS on the specific product
Aluminum coatings can form an invaluable part of a smooth surface built-up roof (BUR), smooth or mineral surface modified roofs (SBS) or torch-down (APP) roofing systems. Aluminum coatings form a highly reflective surface that reduces roof surface temperatures (approximately 15 to 20(F), which can equate in lower internal temperatures. Aluminum coatings also protect the underlying membrane (BUR, SBS, or APP) from UV degradation, thereby helping prolong its life.
In brief, Aluminum coatings:
Normally, aluminum roof coatings have a service life of between 3 to 7 years, depending on the surface coated and other factors.
Factors that affect reflectivity and life expectancy of aluminum coatings are:
Mechanical mixer, such as a 1/2″ drill with a double bladed – paddle mixer or similar device can be used: (i.e.: Jiffy Mixer).
If the roof system you have is classified with KARNAK, coating it according to U.L.’s specifications for KARNAK listed products, will give the roof a UL Class A Rating. One common misconception is that when any roof is coated with a UL labeled material, the roof automatically achieves a UL fire rating. This is not true. In order to achieve a UL fire rating, the entire roof assembly must be tested with Underwriters Labs. Please consult the UL roofing and material system directory (Click Here for KARNAK UL Listing).
UL Listings Guide
KARNAK products should not be altered or thinned. Any attempts at thinning the products can alter their designed physical properties, thereby resulting in possible product failure and/or shorten longevity of the cured material. Thinning of solvent base products is in direct violation of V.O.C. (Volatile Organic Compound) laws and regulations.
KARNAK recommends coating new modified bitumen (APP) membranes as soon as possible after the membrane has been installed. If more than 30 days, follow RCMA/ARMA Field Surface Evaluation Guidelines.
Aluminum coatings do not perform well on roofs that pond water. Dirt can accumulate in depressions and inhibit the reflectance of the coating. If an aluminum coating is under water for a prolonged period of time, the water may work its way under the coating causing it to lift and peel up. Positive drainage is necessary to flush away any accumulation of surface dirt from the roof and keep the reflective properties of the aluminum coating intact.
New asphalt built-up roof (BUR) surfaces, should weather a minimum of 90 to 180 days, prior to coating with a KARNAK’s aluminum roof coating’s (i.e.: #27AF, #28AF, #97, #97AF, #169AF and #298 Alumin-r).
If an aluminum surface coating must be applied sooner to a new built-up roof, an emulsion (water base) coating should be used instead of an asphalt flood coat. An emulsion coating, such as KARNAK’s #220AF Emulsion Coating, will provide a firm base on which to apply the KARNAK aluminum coating 5 to 10 days after the emulsion has cured.
Cutback asphalt primers can act as an asphalt glaze coating and bleed through the aluminum coating unless the primer is allowed to weather 90 to 180 days.