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How do you install LP SmartSide siding?

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Quick Answer

To install LP SmartSide siding, prepare the wall by installing a moisture barrier, attach the starter course to the wall's bottom, nail the siding to the studs using nails of the specified size and type, and seal the seams and gaps using the recommended sealant. Leave a gap between the siding pieces when installing, and finish by priming and painting the siding.

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Full Answer

The moisture barrier should be breathable and must be installed between the wall sheathing and the siding to prevent the SmartSide siding from coming in contact with moisture present in the framing beneath it. Avoid installing the siding over mortar, concrete, stucco and stone materials.

To install the starter course, nail it along the wall's bottom edge and above a starter strip measuring 3/8 by 1 1/2 inches. Keep the course at least 1 inch above structural surfaces.

To nail the siding, use galvanized hot-dipped nails with at least 0.113 inches of shank diameter and 0.27 inches of head diameter. The nails must go all the way into and out of the sheathing and a minimum of 1 1/2 inches into the studs. Drive the nails 3/8 and 3/4 inches from the siding's edge and top, respectively.

When installing the siding, let the joints fall on the studs. Also, overlap the siding on the starter course, and stagger the other courses. Let the courses overlap by a minimum of 1 inch. Leave a gap of 3/16 inches between two siding pieces and between the trim and siding to allow for expansion due to moisture absorption.

Use an exterior sealant that can be painted and is recommended by the American Society for Testing and Materials. Use acrylic-latex, alkyd and oil-based exterior paints on the siding, but avoid vinyl resins and semi- or fully transparent stains.

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