07:37AM | 03/18/05
Member Since: 03/17/05
1 lifetime posts
My husband and I are planning to Hardi plank our house this summer. It was built in the 30's and we are in a pretty cold climate. When we were remodeling the bathroom we found out the exterior walls aren't sheeted-well they are but they are t&g on the interior side of the studs. We were wondering if we need to sheet the outside w/ plywood or something before we put up the siding or if we can just reinsulate and tyveck the exterior. Currently we have tar paper and then wood siding on the exterior of the studs. Any advise would be great!


02:19AM | 03/31/05
Member Since: 03/27/05
95 lifetime posts
I'm NOT an all around construction specialist, roofing being my main expertise. But I think the exterior walls should defininately be sided prior to the the Hardi-plank installation.

Over the years I've seen houses being built which went from:

plywood walls,

to plywood on the wall corners and fiberboard throughout the rest of it,

to fiberboard everywhere,

to silver-faced foam everywhere,

to who-knows what everywhere these days.

I live in a 76 year old house with 2by4 rafters, no insulation in the walls, etc. When dealing with an older house I think one usually needs to compromise between what one wants, what one can afford, and what the legal/local building code requirements are. We all can't spend $200,000 and up on recreating our homes like they do so frequently on TV shows.

Contact the manufacturer, through their website, phone calls, etc. I'm sure they must have various "spec" sheets and/or requirements decribed somewhere for your perusal.

One other thing, I used to see felt paper used

on the "sub-wall" prior to installation of lap siding. NOt sure why this isn't done much

anymore, but I would look into it to see iof there are advantages to doing it. One thing that IS very important is to install flashings above all windows and doors prior to lap siding installation. I've seen many houses these days which have none. This means that caulking is relied upon to keep water from running behind them. The flashings are very easy to cut and install and are cheap to buy.

One who enjoys helping with roof problems, for the fun of it.


02:25AM | 03/31/05
Member Since: 03/27/05
95 lifetime posts
Ok, you may have seen this link, posted by Bravey on another post.

It's a link to the manufacturer, thanks Bravey!

One who enjoys helping with roof problems, for the fun of it.


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