Installation Instructions

ManualsBrandsLP SmartSide ManualsBuilding materialsLP® SmartSide® 3/8 x 6 x 16' Textured Strand Lap Siding

38 AND 76 SERIES STRAND SUBSTRATE

SMOOTH FINISH OR CEDAR TEXTURE

PRIMED LAP SIDING

General

• At the time of manufacture, siding meets or exceeds the per-

formance standards set forth in ICC-ES AC321 and has achieved

code recognition under ESR-1301, CCMC 11826-L, APA recognition

under PR-N124, and HUD recognition under HUD-MR-1318c. For

copies of Product Approvals go online at https://lpcorp.com/

resources/product-literature/ or call LP Customer Support at

1-800-648-6893.

• Minimum 6 inch (152 mm) clearance must be maintained

between siding and finish grade.

• Siding applied adjacent to porches, patios, walks, etc. must have

a clearance of at least 1 inch (25 mm) above any surface.

• Minimum 1 inch (25 mm) clearance at intersection with roof line.

• Apply siding in a manner that prevents moisture intrusion and

water buildup.

• All wood substrate that is exposed to the weather must be

sealed in a manner that prevents moisture intrusion and water

build up.

- Seal ALL exposed cuts of siding and trim. Field spray

applied coatings on cuts are not recommended.

- Sealing can be accomplished by applying a coating or

sealant according to the manufacturer’s requirements.

- Butt joints that are covered with joint molding, sealant

or factory preﬁnished end, are considered sealed from the

weather.

• See Alternate Fastening Options for fastening lap siding to SIP,

ICF and Steel Frame assemblies.

• DO NOT USE STAPLES.

• SIDING MUST NOT BE IN DIRECT CONTACT WITH MASONRY,

CONCRETE, BRICK, STONE, STUCCO OR MORTAR.

StoraGe

• Store o the ground well supported, on a ﬂat surface, under a

roof or separate waterproof covering.

• Keep siding clean and dry. Inspect prior to application.

GapS & SealantS

• Seal gaps with a high-quality, non-hardening, paintable

sealant.

• Follow the sealant manufacturer’s instructions for application.

• Use a high-quality exterior sealant meeting the ASTM C920,

minimum Class 25 sealant.

• All openings must be properly sealed or ﬂashed in a manner that

prevents moisture intrusion or buildup. Several examples that

accomplish this are shown on the following pages.

FlaShinG, WindoWS, doorS & openinGS

Secondary Water-reSiStant Barrier

• A properly installed breathable water-resistant barrier is

required behind the siding. Consult your local building code

for details.

• LP will assume no responsibility for water penetration.

MoiSture

• Moisture control and moisture vapor control are critical

elements of proper housing design. Check your local building

codes for application procedures for handling moisture and

water vapor in your area.

• When using wet blown cellulose insulation, the insulation

must not be in direct contact with the siding and it must be

allowed to dry a minimum of 24 hours or longer if speciﬁed by

the insulation manufacturer.

• As with all wood products, do not apply engineered wood

siding to a structure having excessive moisture conditions such

as drying concrete, plaster or wet blown cellulose insulation. If

such conditions exist, the building should be well ventilated to

allow it to dry prior to the application of the siding.

• Siding must not be applied to green or crooked structural

framing members. Do not apply siding over rain-soaked or

buckled sheathing materials.

• Gutters are recommended for control of roof water run o.

Stud SpacinG

• 38 Series Strand Substrate lap may be installed on studs

spaced a maximum of 16 inches (406 mm) o.c.

• See Alternate Fastening Options for fastening 38 Series Strand

Substrate 6 inch (152 mm) and 8 inch (203 mm) lap on studs

spaced a maximum of 24 inches (610 mm) o.c.

• 76 Series Strand Substrate lap may be installed on studs

spaced a maximum of 24 inches (610 mm) o.c.

• For installations over masonry or concrete walls, the wall

shall be furred out and open at the top and bottom of the wall

to allow for convective ventilation between framing spaced

16 inches (406 mm) o.c. The framing shall be of adequate

thickness to accept 1-1/2 inches (38 mm) of nail penetration. A

properly installed breathable water-resistant barrier is required

between the siding and masonry or concrete walls.

Application instructions

Summary of content (5 pages)

PAGE 1
Application Instructions 38 AND 76 SERIES STRAND SUBSTRATE SMOOTH FINISH OR CEDAR TEXTURE PRIMED LAP SIDING • For installations over masonry or concrete walls, the wall shall be furred out and open at the top and bottom of the wall to allow for convective ventilation between framing spaced 16 inches (406 mm) o.c. The framing shall be of adequate thickness to accept 1-1/2 inches (38 mm) of nail penetration.
PAGE 2
Application instructions (cont.) • For best results use exterior-quality 100% acrylic latex paint, specially formulated for use on wood and engineered wood substrates; oil paint is acceptable. - Alkyd acrylic hybrid paint used as a primer is acceptable, not as finish coat. - DO NOT USE shake or shingle paint. - DO NOT USE semi-transparent and transparent stain. - DO NOT USE Vinyl-based resin formulas such as vinyl acetate, PVA, vinyl acetate/acrylic copolymer paint.
PAGE 3
Application instructions (cont.) CONDITION CORRECTION Snug OK Flush OK Visible fiber Paint Countersunk 1/16"- 1/8" Apply sealant Countersunk more than 1/8" Apply sealant and re-nail • Use minimum 8d (0.113 inch shank diameter), hot-dipped galvanized nail. • All exposed face nails must be caulked and sealed in a manner that prevents moisture intrusion and water buildup. • Penetrate structural framing or wood structural panels and structural framing a minimum of 1-1/2 inches (38 mm).
PAGE 4
Application instructions (cont.) • For rigid foam insulation sheathing greater than 1 inch (25 mm), a minimum 1-1/2 inches (38 mm) thick by 3-1/2 inches (89 mm) wide vertical strap or furring strip must be installed over the sheathing to provide a solid level nailing base for the siding. The strapping must be securely fastened to structural framing spaced no greater than 16 inches (406 mm) o.c.
PAGE 5
Application instructions (cont.) Figure 3 Alternate Butt Joint Treatments Over Openings Joint Moulding Ensure complete paint coverage of the drip edge Gap 3/16", plus thickness of joint moulding web Caulked Butt Joint Gap 3/16" and seal 3/16 in. Flash, shim, & gap 3/8" Figure 3B Figure 3A Figure 3C Vapor Retarder if required by code Breathable waterresistant barrier 8" o.c . ma x. 6" min.