Fiber Cement Siding
Concrete Home >
Building Systems > Fiber Cement Siding
 Although
fiber cement siding commonly has the look of wood siding, it can
be manufactured in a variety of profiles. In all cases, it is a
cost effective and low maintenance finish because it is resistant
to termites and fire, will not rot, buckle or warp, and holds paint
for several years longer than conventional wood siding.
Handling
Fiber cement trim pieces are straighter than wood siding, so less
time has to be spent bowing the trim in alignment. Fiber cement
siding is much heavier than wood siding, but it is flexible, so
carrying it on its edge rather than flat is recommended. And proper
precautions should be taken when cutting fiber cement siding.
Fastening
To prevent damage to the siding, avoid overdriving the fasteners.
While coil nailers are faster, the drivers in the guns can be worn
out faster. Setting the nail head below the surface decreases holding
power. Also, corrosion-resistant roundhead nails are required. All
fasteners should be driven into framing members. Most kinds of lap
siding are bound at the top and bottom. When installing fiber cement
siding over foam insulation board, as on an ICF house, exercise
caution to ensure proper installation.
Detailing
Fiber cement trim board is available in varying sizes, from 7/16
in. to 1in. Vinyl corner trims are also compatible with fiber cement
siding. Manufacturers recommend joining fiber-cement lap siding
over a stud. Make sure to leave a 1/8 in. gap between the siding
and the edge of the wood casings and corner boards so the wood can
move. There is no need to paint or seal end cuts.
|
|
|
|
|
Top row, L-R: Shingles, Smooth Beaded, Smooth
Bottom row, L-R: Vertical, Textured Beaded |
Painting
Fiber cement siding holds paint exceptionally well, usually 7-15
years. Some manufacturers offer siding as either pre-primed or raw
(unpainted). If raw, siding should be thoroughly washed and allowed
adequate time to dry before painting.
Dirt and mildew are liable to stick to flat paint. Satin topcoats
have a higher chance of looking blotchy than flat ones, so make
sure to do a good job on your priming. While oil-based primers are
not recommended, oil-based topcoats are acceptable over latex primers.
Siding should be painted within 90 days of installation. Always
make sure to follow the manufacturer's specs.
* Photos courtesy of CertainTeed
and James
Hardie
> Return to top
Disclaimer
The listing of organizations and information resources constitutes
neither an endorsement nor recommendation by the Portland Cement
Association (PCA). PCA disclaims any and all responsibility for
the selection of organizations listed and the products they represent.
PCA also assumes no responsibility for errors and omissions in this
list.
> Return to top
|
 |
|