Technical Note No. 026

Transcription

1 Technical Note No. 026 Strand Substrate Installed Vertically for Board & or Board-on-Board Applications This Technical Note is an addendum to the Strand Substrate Application Instructions and Trim and Fascia Application Instructions. LP SmartSide Strand Substrate may be installed Vertically for Board & or Board-on-Board applications, according to the following requirements. Siding must be installed over a minimum 7/16 Category wood structural panel with an APA Trademark that contains the consensus Standard DOC PS 1 or PS 2, or LP FlameBlock Fire-Rated OSB Sheathing or may only span one plate-to-plate. Due to expected plate shrinkage, each vertical application is not to span beyond one floor to ceiling distance, or one floor to top of gable distance. (See Figure 5 & 6) s must be a minimum 0.5 x 2.5 inches actual size. Siding must be installed over a non-compressible drainable housewrap to provide drainage behind siding. Finish/Paint: o Prime and paint all field cuts and exposed ends following the paint manufacturer s instructions The edges of must be spaced a minimum of 3/16 inch from each other. Spacing cannot exceed the distance that will allow a minimum 1 inch of bearing surface for the overlapping piece of. (See Figure 3 & 4) Sealant is not required in any vertical joint covered by or and backed by a water-resistive barrier. Minimum Fastener Type for : o Corrosion Resistant = Hot-dipped Galvanized (ASTM A153) or stainless steel o Ring Shank o Shank diameter = inch o Length = fastener shall be long enough to fully penetrate structural panel sheathing. Ensure that the ring shanks of the nail fully engages the wood structural panel wall sheathing. Caution: The length of fastener should be chosen to reduce possible damage to wiring or other utilities in the exterior wall assembly Page 1 of 5

2 Fastener Placement for : o 3/8 inch from ends and edges (See Figure 2) Fastener Spacing for : o Fastened with two nails at both ends, with additional fasteners spaced a max. of 12 inches o.c. along alternating edges (See Figure 2) Minimum Fastener Type for : o Corrosion Resistant = Hot-dipped galvanized (ASTM A153) or stainless steel o Style Ring Shank nails provide superior resistance to fastener pull-through. In Hurricane-Prone Regions or locations where negative wind loads are a concern, ring shank nails should be used. Trim nails may be used in other locations with the following cautions: Do not overdrive or counter sink the fastener, nail flush with the surface of batten. Detachment of battens is not covered by the LP SmartSide limited warranty whether ring shank or trim nails are used. o Shank diameter = inch o Head diameter = inch o Length = fastener shall be long enough to fully penetrate Caution: The length of fastener should be chosen to reduce possible damage to wiring or other utilities in the exterior wall assembly Fastener Placement for s: o 3/8 inch from ends and edges (See Figure 1) Fastener Spacing for s: o Fastened with two nails at both ends, with additional fasteners spaced a max. of 12 inches o.c. along alternating edges the length of the batten (See Figure 1) Do not bridge floors with or s. Create a horizontal joint between floors. Horizontal joint must be flashed with Sloped Metal Z-flashing. (See Figure 5) must be applied in a manner that will not allow moisture intrusion or water buildup. When using SmartSide siding with other siding products like stucco, brick or cultured stone veneers, it is important to use a capillary break so moisture absorbed into those veneers cannot be transferred into SmartSide siding. Separate SmartSide siding from veneers with min. 3/8 space for horizontal joints and 3/8 for vertical joints, use sealant. Backer rod may be required by the sealant manufacturer. (See Figure 7 & 8) All other requirements of the Application Instructions and Trim and Fascia Application Instructions must be followed. Page 2 of 5

3 12 o.c. max. 12 o.c. max. 3/8 from ends & edges 3/8 from ends & edges Figure 1 Figure 2 Attachment min. 1 bearing surface min. 3/16 Fastener Attachment min. 1 bearing surface Figure 3 Figure 4 Page 3 of 5

4 Two Story One Floor to Ceiling Horizontal Joint between Floors or 4 Wide Adhesive Flashing Min. 3/8 space with Sloped Metal Z-flashing Floor Sheathing One Story One Plate-to-Plate Floor Framing or Figure 5 Figure 6 Page 4 of 5

5 Horizontal Transition Joint Vertical Transition Joint Min. 3/8 space with Sloped Metal Z-flashing 3/8 space with backer rod and sealant Stucco, brick or cultured stone Figure 7 Figure 8 Page 5 of 5