Installation Instructions

Allura Fiber Cement Siding Installaon Manual
68
Installation
1. Fiber Cement soffit should be applied to structural framing members spaced no
more than 24” o.c. with the longest dimension perpendicular to the framing.
Vent Soffit to Outside of Eaves
2. Nail a 2”x 2” (minimum) nailer board along the wall, with the bottom edge of the
nailer board level with the bottom edge of the fascia.
3. At every butt joint of the soffit, back up the joint with 2x framing going from the
fascia back to the wall. If the soffit corners are going to be mitered, nail 2x blocking
from the corner of the fascia to the corner of the wall.
4. If you are going to use H-channel at the mitered corners, nail the H-channel to
te  bloing and slide te ut soit into it Cut te soit  sorter tan te
H-channel to allow for expansion and contraction.
Installation
1. Cut Fiber Cement soffit panels face down with mechanical shears or a circular saw.
2. Prime or paint the cut edges before installing the soffit. Do not prime or paint the
back of the soffit.
3. se orrosionresistant otdied galanied or stainless steel d or d nails 
head minimum).
4. Fasten te soit  rom te side edge  rom te butt end and  rom te
corner. Space the fasteners every 12” along both the front and back edge. The
butt ends should be in contact, fastened at corresponding ends, and supported
by framing.
Secon 14: Porch Ceiling Panels
Porch Ceiling panels are specifically designed to be used in porch and/or ceiling
aliations e anel sie is      eore ou install te or Ceiling anels