Masterseal M 205 is a low VOC one-component, moisture curing polyurethane base coat for use in Masterseal Traffic 1500 and 2000 Low VOC deck coating systems.
• Parking Garages
• Commercial Construction
• Building and Restoration
• Plywood Decks/Balconies
• Plaza Decks
Concrete must be fully cured (28 days), structurally sound, clean and dry (ASTM D 4263). All concrete surfaces (new and old) must be shot blasted to remove previous coatings, laitance and all miscellaneous surface
contamination and to provide profile for proper adhesion. Abrasive shot blasting must occur after concrete repair has taken place. Acid etching is not permitted. Proper profile should be a minimum of ICRI CSP-3 (as described
in ICRI document 03732.) For balconies and other pedestrian areas with limited space or access for shot-blasting, alternative mechanical methods can be used to achieve the recommended surface profile.
All plywood must be smooth-faced, APA stamped and exterior grade tongue and groove. Construction must conform to code, but plywood must not be less than 23⁄32″ (20 mm) thick. Plywood spacing and deck construction must follow APA guidelines. Surfaces must be free of contaminants. Priming is not necessary on clean, dry plywood.
- All preparatory work must be completed before application begins. Be certain the substrate is clean, dry, stable and properly profiled. Sealants
and pre-striping should be properly cured. Apply the base, mid and finish coats with a properly sized squeegee to arrive at the required mil thicknesses.
- Apply Masterseal M 205 at 25 wet mils thick (0.64 mm) using a proper notched squeegee to entire deck surface, and back roll, overcoating
the properly prepared cracks, joints and flashings. Do not coat expansion joints over 1″ (25 mm) wide. Slope grade product should be used on a slope greater than 15%.
- Allow curing time of overnight (16 hour minimum). Extend the curing time in cool or dry weather conditions. The surface of Masterseal M 205 should have a slight tack. If the coating has been exposed for a prolonged period, consult Technical Service for recommendations.
When properly stored, Masterseal M 200 products have the following shelf
5-Gallon Pail: 1 Year