I am installing prefinished 3/4" solid oak hardwood floors throughout the main level of my house. I have never installed hardwood before.
I have a 3/4" plywood subfloor nailed (and now screwed, during my subfloor prep stage) to the joists (2x10s on 16" centers). The joists run along the length of the house (i.e. horizontally in the diagram). Most sources I have seen indicate that with a 3/4" plywood subfloor on joists, you need to either run perpendicular to the joists OR install an additional 1/2" of plywood on top of the 3/4" subfloor. I do not want to put 1/2" plywood everywhere, so I thus need to install the hardwood perpendicular, as shown by the yellowish lines in the diagram.
I am planning on blind nailing into the tongues (2" nails) for most of the floor. I am planning on gluing (PL400) + nailing the transitions into kitchen and bathroom, and the nosed edge on the balconies (overlooking the two staircases to the entrances).
I am planning on using Aquabar-B for the underlayment.
Please ask if there is any other pertinent information I have neglected to supply and I can add it.
I see two potential problem areas in my planned layout. I would appreciate any comments on if they are going to be an issue or not.
- Going down the hallway, there will be a run of about 45', from the front of the living room to the back of bedroom 1, which will be one continuous strip (installed parallel to the grain, which is the primary direction that wood moves)
- In the dining room there are two balcony areas overlooking the stair cases; I am planning on installing nosings to go over the edge of the balcony, which means that I would not have an expansion gap here that can be covered by baseboards.
For issue #1 I assume that adding a 'washer row' (using washers as spacers) every 10 rows or so may be sufficient?
For #2, the width of the dining room is only 9', so maybe that's small enough that it won't matter (and if I put a couple washer rows in there too, it will just be fine).
I live in Calgary, Canada, so things are reasonably dry most of the time, and in the winter (with forced air heating) it is quite dry.
I don't currently have a whole-house humidifier, but plan on getting one installed before winter this year.
Thanks for any suggestions / pointers!