Our 25 year old Florida block home has stucco on the rear of the
house, and on both sides below the gables. The top above the gables
is grooved wood paneling. The front is natural stone and also grooved
wood paneling. We looking at fixing this up and doing the paneling
over with Hardie Plank siding.
We’ve received several quotes and they are charging material and labor
by the “square” we were told is 100 sq ft (10’ X 10’). The prices are
from $800/square and up (and we mean WAY up). We looked at a local
box store and the Hardie Plank (7-1/4” X 12’) is under $5/each. This
means for 20 of these planks we’d cover 10ft tall but 12ft wide or
120sq ft for around $100. This also means these places are charging
around $700 per square to install it. And they were all talking of
putting it right over top of the existing paneling since it’s not in
too bad shape, to add an extra layer of insulation.
So we’re looking at doing this ourselves. A couple questions we
have. The Hardie Plank requires a water resistive barrier but we’re
wondering that since we’re going over the existing paneling which has
a foil back insulator under it, do we still need to do this? They
also speak of putting down a joint flashing layer under the planks but
once again since, we’re going over the existing paneling, do we need
to do this?
If anyone has experience with this and can let us know if we need to
do this barrier, we’d greatly appreciate it. And any advise,
warnings, suggestions or any words of wisdom about Hardie Plank siding
would be appreciated.