View the GacoDeck online video or the application DVD before beginning your deck. All surfaces must be dry and clean, without wax, dust, oil, asphalt or contaminants. Do not apply GacoDeck if rain is expected. GacoDeck is not recommended over asphalt coatings.
The GacoDeck Kit includes everything you will need to get started.
Figure A: Tape off termination points.
Figure B: Apply paintable acrylic caulking to all joints and cracks. Smooth the caulk flush with deck surface.
Figure C: Seal joints and cracks by applying polyester tape between two layers of GacoDeck coating.
Figure D: Seal corners by applying polyester tape between two layers of GacoDeck coating.
Figure E: Perimeter Detail
Figure F: Change of Plane Detail
Figure G: Joint Detail.
Figure H: Plywood Drain Detail.
Figure J: Apply a uniform first coat.
Figure K: Allow surface to dry until it can be walked on and then apply a second uniform coat.
Figure L: Add GacoGrip granules to the remaining GacoDeck coating and mix thoroughly.
Figure M: Apply texture coats with parallel overlapping roller passes.
Figure N:Allow surface to cure for 48 hours.
Apply high-quality 50-year, water-resistant, paintable acrylic caulking to all joints and cracks. (Use only Acrylic Caulking). Apply caulking according to manufacturer recommendations. Smooth the caulk flush with deck surface. If caulking is allowed to dry more than 24 hours, wipe with a damp cloth prior to application. Joints, cracks and changes of plane must be taped (For details, see Figures E, F, G and H). To begin taping, brush a 5-6” wide stripe of GacoDeck coating, centering the stripe over joints or cracks. Work in small sections, since latex coatings dry quickly. While the coating is still wet, embed polyester tape smoothly into the coating. Brush another layer of coating over the tape, smoothing out any wrinkles. Allow the surface to dry. For a seamless finish, lightly sand the edges of the coated tape with medium grit sandpaper before applying the first coat.
All flashing must be flush with surface. If installing flashing nail or screw every six inches. Care should be taken to not buckle the flashing during installation. Prime all metal flashing with appropriate exterior metal primer. All flashing must be taped following the directions above.
If the GacoDeck coating will terminate where there is no natural break, use masking tape to create a clean, sharp edge.
Substrate must be completely CLEAN and DRY before applying GacoDeck. Apply a uniform coat of GacoDeck, using 3/4 gallon per 100 square feet over entire surface, including taped or flashed areas. Unlike paint, apply a heavy coat in order to create the waterproof elastomeric membrane. Allow surface to dry until it can be walked on, 2-4 hours in ideal conditions. While the first coat dries, wrap the roller cover in aluminum foil or plastic.
Apply another uniform coat of GacoDeck, using 3/4 gallon per 100 square feet over entire deck surface, including taped or flashed areas. Allow the surface to dry until it can be walked on, 2-4 hours in ideal conditions. While the second coat dries, wrap the roller cover in aluminum foil or plastic.
GacoGrip texture granules create a decorative and slip-resistant finish for your deck. Add all of the GacoGrip granules to the remaining coating. Stir thoroughly. After adding texture, apply two topcoats at 3/4 gallon per 100 square feet per coat. Best results are achieved by applying texture coats in parallel overlapping roller passes, either North-South or East-West. Allow the first coat to dry before applying the final coat. If you must wait more than 72 hours between coats, wash the surface with detergent, rinse well and allow to dry completely. GacoDeck must be applied at the proper rate (100 square feet) per kit to ensure proper coating thickness. Failure to do so voids the warranty and may result in the products failure to provide a waterproof membrane.
Warning: A darker GacoDeck coating will reflect less sunlight, creating a potential increase in the temperature of your GacoDeck.
During hot weather (above 90°F) apply coating in morning or evening. Do not apply at temperatures below 50°F or when temperatures will fall below 50°F within 6 hours. Wait two or more days before using deck or placing heavy objects on surface.
In extremely cold climates (10-15°F over a three month period), GacoDeck Primer must be used in conjunction with GacoDeck. If GacoDeck Primer is not used with GacoDeck, your deck could experience surface cracks. There are two modifications to the instructions above for extreme cold weather climates. First, all taping and flashing details must utilize GacoDeck Primer instead of GacoDeck coating. Second, apply one coat of GacoDeck Primer at rate of 1 gallon per 200 square feet over entire surface prior to the first base coat. After primer is dry, you can follow normal GacoDeck instructions starting with "First Base Coat."
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