9.27.5.4.Size and Spacing of Fasteners

(1) Nail or staple size and spacing for the attachment of cladding and trim to wood framing, furring members or blocking shall conform to Table 9.27.5.4.-A. (2) Screw size and spacing for the attachment of cladding, trim and furring members to the web fastening strips of flat wall insulating concrete form (ICF) units shall conform to Table 9.27.5.4.-B where the 1-in-50 hourly wind pressure (HWP) is less than or equal to 0.60 kPa. (See Note A-9.27.5.4.(2)) Table 9.27.5.4.-A Attachment of Cladding to Wood Framing, Furring Members or Blocking Forming Part of Sentence 9.27.5.4.(1) Minimum Nail or Minimum Number of Maximum Nail or Type of Cladding Staple Length, mm(1) Nails or Staples Staple Spacing, mm o.c. Wood trim 51 — 600 Lumber siding or horizontal siding made from 51 — 600 sheet metal 600 (nailed to framing) Metal cladding 38 — 400 (nailed to sheathing only) Wood shakes up to 200 mm in width 51 2 — over 200 mm in width 51 3 — Wood shingles up to 200 mm in width 32 2 — over 200 mm in width 32 3 — Vinyl and insulated vinyl siding horizontally applied 38 — 400(2) vertically applied 38 — 300 Polypropylene siding 38 — 400(2) Panel- or sheet-type cladding up to 7 mm thick 38 — 150 (along edges) over 7 mm thick 51 — 300 (along intermediate supports) Notes to Table 9.27.5.4.-A: (1) The minimum fastener length need not exceed the minimum fastener penetration depth required by Article 9.27.5.7. (2) The maximum spacing of 400 mm o.c. applies to nails and staples used to attach horizontally applied vinyl, insulated vinyl and polypropylene siding, unless a greater spacing is permitted in an evaluation report prepared by an accredited certification organization. Table 9.27.5.4.-B Attachment of Cladding to Flat Wall ICF Units where the 1-in-50 HWP ≤ 0.60 kPa Forming Part of Sentence 9.27.5.4.(2) Minimum Screw Minimum Screw Maximum Horizontal Spacing Type of Cladding(1) Length Diameter, mm of Screws, mm o.c.(2) Wood trim (3) 3.5 400 or 450 (screwed to web fastening strip) Lumber siding or horizontal siding made (3) 4.2 400 or 450 (screwed to web fastening strip) from sheet material Metal cladding (3) 4.2 400 or 450 (screwed to web fastening strip) Vinyl cladding (3) 3.5 400 or 450 (screwed to web fastening strip) 400 or 450 (masonry tie screwed to Masonry veneer(4) (3) 4.2 web fastening strip) Panel- or sheet-type cladding up to 7 mm thick (3) 3.5 150 or 200 (along edges) over 7 mm thick (3) 4.2 300 or 400 (along intermediate supports) Notes to Table 9.27.5.4.-B: (1) Wood shakes and wood shingles are permitted to be attached to horizontal wood furring members in accordance with Table 9.27.5.4.- A. The wood furring members shall be attached to the web fastening strips of flat wall ICF units with screws not less than 4.2 mm in diameter spaced horizontally not more than 400 or 450 mm o.c. (two horizontal spacing options are given to accommodate the 150 and 200 mm o.c. horizontal spacing options for web fastening strips). (2) Two horizontal spacing options are given to accommodate the 150 mm o.c. and 200 mm o.c. horizontal spacing options for web fastening strips. The maximum vertical spacing of screws or masonry ties, as applicable, shall be 400 mm. (3) Screws must be long enough to penetrate through the web fastening strips by a minimum of 6 mm. (4) See also Subsection 9.20.5. for requirements on the support of masonry veneer.