Installation Manual - CertainTeed
Installation Manual - CertainTeed
Installation Manual - CertainTeed
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<strong>CertainTeed</strong> WeatherBoards Fiber Cement Siding <strong>Installation</strong> <strong>Manual</strong><br />
Concrete Masonry (CMU) or Poured Concrete Walls<br />
Consult applicable building codes before installing WeatherBoards Fiber Cement siding on CMU or a concrete wall.<br />
The CMU or concrete wall must be able to resist all loads transferred from the siding. Also, comply with the requirements<br />
listed in the most recent version of this manual. The recommended fastening methods are listed below. 1<br />
1 Wall preparation recommendations for CMU and Poured Concrete Walls can be found on page 28.<br />
Pressure Treated Furring<br />
(1" x 3" min.)<br />
Fastened 12" o.c.<br />
Pressure Treated Furring<br />
(1" x 3" min.)<br />
Fastened 8" o.c.<br />
Recommended Fasteners for CMU and Concrete Walls 2<br />
Fastener Fastening Method Allowable Wind Pressure<br />
1-1/4" roofing nails, double<br />
HD galvanized; 3/8" head<br />
1-1/4" roofing nails, double<br />
HD galvanized; 3/8" head<br />
Blind nailed into furring<br />
Blind nailed into furring<br />
2 See page 25 for recommended fasteners to install fiber cement over furring.<br />
Insulation<br />
Concrete slab<br />
Concrete<br />
masonry<br />
unit or<br />
wall<br />
1-1/2"<br />
min.<br />
Fiber cement siding<br />
1-1/4"<br />
Weather-resistant barrier<br />
Continuous metal flashing<br />
Peel & stick flashing<br />
2" Starter<br />
Final grade<br />
Fastening to Concrete Masonry or Poured Concrete Walls<br />
1-1/4"<br />
2X Furring strips<br />
20.0 psf, 90 mph in “B”<br />
exposures up to 30'<br />
39.0 psf, 125 mph in “B”<br />
exposures up to 30'<br />
23
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