wood flooring question

I'm getting some white pine milled into 12" wide boards for flooring. The plan is to simply butt joint and nail with cut nails, no t&g. The guy at the mill said he's seen it work with minimal problems. I want a rustic look, but am I setting myself up for disappointment? will I get cupping? would a shiplap joint be better?
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Doug wrote:

Drying?
Thickness?
Subflooring?
HVAC system/area?
It's basically what was done for years, but usually w/ thicker planks and before tight houses and central heat/air that really cause major rapid humidity changes.
There will be gaps owing to that wide of a board--roughly 1/8" each and will have to leave sufficient room to handle it or it will buckle.
The shiplap or other joint would at least minimize the depth of these.
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I think I'd try to T&G them - and lay them heart side down whenever possible so they cup up in the middle insted of the edge.
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Seems like that pretty well covers it. Just to add a bit, I would put it over subfloor of some type, as the floor will flex since it is white pine.
Which makes me ask, why white pine? It is really soft, so it will have little abrasion resistance or endurance. It moves a lot; this means it will deteriorate your finish more quickly.
Down here in the south, there are a LOT of old buildings that have wood floors. Houses have white oak; stores, dance halls, and some of the commercial buildings have pine floors installed 100 years ago.
But that pine is Southern Yellow Pine, not white pine. The SYP will wear like iron if you can get some close grained stuff. If it were me, no matter my finish I wouldn't be looking at white pine. Save it for furniture, projects, etc.
Robert
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snipped-for-privacy@aol.com wrote: ...

If he can get 12" boards at the mill, I would presume that means he's in the NE. If so, it's traditional and while shows denting and wear more than harder woods of course, I would also presume that characteristic is part of the desired rustic look...
Those characteristics, of course, are why I asked the question of thickness/subflooring. Only time will tell if OP comes back w/ any further input or not...I'd be curious about location and grade and cost of the material as quality white pine is almost pure unobtainium here last time I tried to buy some 5/4 for window stock...
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