I am having some siding replaced on my 20 y/o before painting. One of
the contractors included in their bid replacing the current plywood
T1-11 with fiber cement lap siding.
Any comments on the pluses and minuses of the two options?
Sounded good to us until we asked a neighbour.
Some problems here; damp climate. Neighbour's 8 inch Hardy plank lap
siding delaminated in places.
However while there is/was a possibility that my neighbours batch was
improperly stored (out in the open?) before he bought and installed
it, the manufacturer's rep. gave him a refund and allowance for labour
for him to replace it on both ends of his A frame summer cabin. Wooden
8 inch pine on the other sides of his cabin is OK.
I've installed a ton of HardiePlank for Habitat for Humanity. Some
* Store it out of the rain. It's concrete, so it *will* absorb a
* It needs to be sealed on all sides. The Hardie brand comes primed,
but you need to seal the cut ends with caulk. We have younger
volunteers paint it all ahead of time. It's a good project for those
too young (according to the insurance wonks) to use tools. Once it's
painted, you can store it outside.
* If you nail too close to the corner, it can split into layers. This
doesn't appear to be a problem, since that area will be covered by the
next layer. Avoid this by drilling pilot holes with a small masonry bit.
Thanks. But I am definitely not gonna install it myself (although I
now know what to look for when they ARE installing it). What I want to
know is how is it better than T1-11 to justify the extra $14,000 (nearly
double) that it would cost. Do I have to paint it less? Any energy
savings due to better insulating (or energy costs). Why is it (or not)
worth the extra money?
Ahhh, now I understand. All you have to do is hit me with a stick. :-)
* Since fiber-cement products (FCPs) are made of concrete and
fiberglass, it won't rot and bugs won't eat it. T1-11 is wood, and
usually cheap wood.
* FCPs are completely waterproof. T1-11 is also waterproof if
installed properly, but if the coating fails, there goes the
* FCPs come primed and take paint well. T1-11 is bare wood, and you
have to prep and maintain it.
* The appearance is completely uniform. T1-11 has voids that show in
the grooves. You have to fill these before painting.
The major advantages, to me, are the rot resistance and uniformity.
Part of the price difference might be in labor. 4x8 panels go up faster
than lap siding. You can also buy FCPs in 4x8 panels, giving a similar
look to T1-11.
That's hard to say, but generally it does hold a
paint job a good bit longer than wood siding.
It depends on:
(a) Where you live
(b) Quality of the paint put on
(c) How the paint was put on
Kurt Ullman wrote:
Possibly just one and this is area dependant. T1-11 can be attractive to
termites. In my area (Norfolk VA) this is a serious problem so the added
expense of the cement lap siding, if not going vinyl, is worth it in the
The HardiePlank installation instructions say to maintain 1" - 2"
clearance around paths, steps, and driveways; and to maintain 6" (or
local code) above finished grade.
See figures 3 and 4 here:
I don't know where you're located, so I chose the "south" instructions.
Around here, *all* siding products must be at least 6" off the dirt to
discourage insects, especially termites.
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