Installation Instructions

Allura Fiber Cement Siding Installaon Manual
30
Allura Fiber Cement Siding Allowable Wind Load
Fastener Fastening Method
Allowable
Wind Pressure
Lap Siding
u to 
 rooing
nails, double HD
galanied  ead
Blind nailed 8” o.c.
40.44 psf; 125 mph in
“B” exposures up to 30’
 rooing
nails, double HD
galanied  ead
Blind nailed 12” o.c.
27.0 psf, 105 mph in
“B” exposures up to 30’
Lap Siding

 rooing
nails, double HD
galanied  ead
Blind nailed 8” o.c.
29 psf; 110 mph in
“B” exposures up to 30’
6d 2” siding nails;
double HD galvanized
Face nailed 12” o.c.
24.4 psf; 100 mph in
“B” exposures up to 30’
Vertical Siding
6d 2” siding nails;
double HD galvanized
6” o.c. around edges;
12” o.c. each way
in the field
18.67 psf; 85 mph in
“B” exposures up to 30’
Concrete Masonry (CMU) or Poured Concrete Walls
Consult applicable building codes before installing Allura Fiber Cement Siding on CMU
or a concrete wall.
The CMU or concrete wall must be able to resist all loads transferred from the siding.
Also, comply with the requirements listed in the most recent version of this manual. The
recommended fastening methods are listed below.
Recommended Fasteners for CMU and Concrete Walls
1
Fastener Fastening Method
Allowable
Wind Pressure
Pressure
Treated Furring
(1” x 3” min.)
Fastened 12” o.c.
 rooing
nails, double HD
galanied  ead
Blind nailed into furring
20.0 psf, 90 mph in
“B” exposures up to 30’
Pressure
Treated Furring
(1” x 3” min.)
Fastened 8” o.c.
 rooing
nails, double HD
galanied  ead
Blind nailed into furring
20.0 psf, 90 mph in
“B” exposures up to 30’
1
See page 33 for recommended fasteners to install fiber cement over furring.