Plastic Coatings Corporation Jaxsan Coating Products


Specifications for JAXSAN 600/601 Weather Coating

General

The deck must be structurally sound and conform to all building standars and codes assigned to that particular type of roof deck construction. If there is doubt of a building’s or roof’s ability to conform to buildings standards, consult a structural engineer for possible compliance steps. JAXSAN 600 may not perform adequately if the building or roof deck is structurally flawed or substandard. Flashing must be repaired to full functunality and all protrusions, structural bodies and edges properly flashed according to specifications developed by National Roofing and Waterproofing Manual. Loose sheet goods must be properly fastened and infirm or rotted material replaced. FOR BEST RESULTS USE ONLY ON SLOPED ROOFING. DO NOT USE JAXSAN 600/601 IN AREAS OF PONDING WATER OR WHERE PONDING WATER IS LIKELY. The deck must be dry and the surface must be clean and free of dirt and foriegn matter which may impair proper adhesion of the coating to the deck. In areas of rust, wire brush affected areas and apply a suitable general purpose primer, such as JAXSAN 1500 meatl primer, according to its specifications. Rough surfaces and uneven application of the coating will reduce the effective coverage rate of the coating. It is the responsibility of the contractor to determine how much coating will be necessary to achieve the minimum dry film thickness. Topcoats should be applied at a rate of no more than 3 1/2 gallons per square per coat. To exceed that amount might encourage the coating to run or sag on steeply sloped areas. For further information and application guidelines see the Application Guidelines or contact a Plastic Coatings Reoresentative.

Metal Roofing

Preparation: The metal deck must be structurally sound. All screws and rivets must be securely tightened or replaced. In all joining areas such as panel seams, skylights, vents and caps, seal all gaps greater than 1/8 inch with an elastomeric acrylic caulk and allow to cure completely. Pressure washing with an environmentally safe and hard surface cleaner is recommended to insure a clean coating surface. Rinse well after cleaning.

Basecoat: Apply JAXSAN 600 to all scew heads and joining areas at a wet thickness of about 65-70 mils. The goal is to achieve a watertight seal of all seams and joining areas. The dry film thickness on the basecoat should be a minimum of 35 mils. The recommended wet mil thickness of a 65-70 mils will achieve a 36-38 dry film thickness. The basecoat should extend from the edge of the metal for 2 to 3 inches on both sides of the seam. A fastener should be completely sealed to the deck and the coating should extend for 1 inch around the fastener to insure a watertight seal. After the basecoat has thoroughky dried, the roof should be completely sealed and watertight.

Topcoat: Apply JAXSAN 600/601 uniformly at a minimum rate of 3 to 3 1/2 gallons per 100 square feet to the field of the roof. The theoretical dry film thickness of the coating applied at the above rate ranges from 25.5 to 30.5 mils. The minimum dry film thickness for the topcoat is 25 mils.

Built-Up Roll Roofing

Clean the roof deck to present a smooth surface free of all roofing gravel and debris. Water blasting or high pressure cleaning is recommended. Repair all blisters, areas of delamination or generally unsound roof decking or roofing material. Caulk any gaps or cracks larger than an 1/8 inch with an appropriate non-asphalt material. Cracks and crevices larger than a 1/4 inch must be fully repaired in accordance with generally accepted roof repair practices endorsed by the National Roofing Contractors Association (708)299.1183. Any repairs made with asphaltic materials must be weathered 4-6 weeks before being sealed with an appropriate stain sealer. Do not apply JAXSAN 600 over oily or insufficiently weathered asphalt. Discoloration of the coating and possible loss of adhesion to the roof deck may occur.

Topcoat: Once the roof has been properly repaired and cleaned, apply Jaxsan 600 at a minimum rate of 3 to 3 1/2 gallons per 100 square feet to achieve a minimum dry film thickness of 25 mils. If the deck is scarred or has a rough profile, more coating will be necessary.