The narrowest Hardiboard siding around here is for 4″ exposure. Anybody ever hung the 4″ with a 3″ exposure? Does it work? Is there another brand that come in 3″?
Thanks.
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Replies
Maybe I'm missing the obvious here .... If the siding is designed for 4" exposure, which means there is 4" showing from course to course, what's so hard about increasing the overlap an inch to get 3" exposure? Seems like it would be slightly more weathertight, not less. Why would you need to buy a specific brand?
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I think the only thing "obvious" that you might be missing is that if the cost per linear foot might be a bit less for material designed for 3" exposure. That's all.
Typically there is a 1 1/4 inch overlap using hardieplank. If you increase this to 2 1/2 inches, you may find that the bottom edge doesn't fit tite to the underlying board. Come to think of it, they probably don't make 3 inch hardiplank for this reason. You just can,t overlap siding when the siding becomes too narrow.
Yeah, there is no taper in HP, so at some point past 1-1/4" overlap (below 7" exposure), the stuff is going to start looking weird.
Shouldn't cause a problem, so long as you start with an appropriate shim at the bottom. If you don't use an appropriate starter shim (which in this case should probably be a strip of Hardi plus a wedge-shaped rip of 2x) then it's gonna be funky.In any case you'll have more of an angle to the face, but Hardi is thinner than most other sidings anyway, so this shouldn't seem too out of proportion.Of course, you could always rip an inch off the Hardi, if you're into self-abuse.
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