Please help! Doing construction/rebuilding on my house and the 2x10's I'm using are splitting end to end.
I have a load of lumber from HD (not a "real" yard) that I'm using now for repairs and later for a small addition. Some of the lumber is in my basement but most is in my garage. Both are unheated but the basement has a dehumidifier set to 35% humidity. And it's in the 20's here in NJ. I buy from the orange box because I can select the lumber myself - the yards don't let me.
BTW - Not a big fan of the orange box, but other lumber from them has been fine including very straight KD DF studs. I have a new bath framed in the basement using a little bit of everything and nothing has warped or split after months w/the dehumidifier.
Currently I'm replacing some 60" long 1st floor joists (exposed to the basement) and 3 pieces from a 2x10 from the garage and from the basement have split end to end while just sitting fitted snug in position without any fasteners. It's Douglas Fir, but I can't help noticing that the growth rings are quite far apart. Also, most pieces are centered or nearly centered w/the tree, causing me to believe these are small trees being harvested.
One other point: Before starting I trimmed off the ends which were already split 6-8" per end at the store ...
Any idea why this is happening? What can I do about it? Is it really the source I'm getting this stuff from? Can it be something done wrong at the mill? Can you return cut wood???
I'm in a bind because we have about 250 sqf. of open joists and I need to get these in and subfloored before someone falls through...
I get by with a little help from my friends...