How to Apply Waterproof Exterior Stucco

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    • 1). Clean off any dirt or debris from the exterior surface with a wire brush.

    • 2). Apply a coat of bonding liquid to the exterior surface, using a standard paintbrush.

    • 3). Grab and hold the hawk in your non-dominant hand, then scoop the premixed stucco onto the hawk with the trowel.

    • 4). Trowel the stucco onto the exterior surface once the bonding liquid becomes slightly tacky. Aim for an even stucco coat of 1/2 inch. Broad strokes with the trowel will provide a smoother-looking surface, while shorter strokes will give a more textured impression.

    • 5). Wet the rubber float and sweep it across the stucco surface to smooth and even it out. Allow the stucco to dry overnight.

    • 6). Apply a mist of water to the stucco once a day for an entire week to enable a slow and steady curing. Wait a week for the stucco to completely cure.

    • 7). Brush on a thin layer of the waterproof stucco sealer with a paintbrush. Cover the entire surface. The sealer will ensure that water will no longer penetrate your stucco.

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