We just installed a prefinished hardwood floor (3/4" x 3-1/4" Australian
Cypress). We layed Rosin paper on the subfloor and nailed every 12" or so
using a rented floor nailer ("L" shaped nails).
The floor looks great, but it makes popping and cracking sounds when we
walk on it. I can't tell if the boards themselves are cracking (maybe
slightly cupped), if the nails are somehow popping, or if the tongues and
grooves are somehow rubbing against each other.
We're not living in the house yet, and I'm certainly not going to take the
floor up, but I'm curious if this cracking sound is normal. If so, will it
always be this way, or will the cracking sounds dimenish over time?
If your experience is like mine, the floors will quiet down with time.
I'm assuming that you:
1. Tapped the boards together with a rubber mallet before nailing.
2. Didn't stand on the board being nailed.
3. Corrected any obvious flex in the subfloor before starting.
Yes, the flooring was stored in the adjoining room (no doors) for a few
weeks before installation.
Yes, using a "tap block" so as not to damage the tongues. The boards all
fit together nice and tight.
New construction, 2x10 joists @ 16" OC, 12' span, 3/4" T&G plywood
subfloor. Very sturdy, level, and no flex.
It really sounds like the boards themselves cracking, not rubbing or
squeaking. Maybe it's just characteristic of the Australian Cypress with
it's natural knots and cracks (we weeded out any boards with visible
firstname.lastname@example.org (m Ransley) wrote in
'Settling' is not uncommon, it has scared me several times on unfinished
but was gone after sanding. Seems to happen more on the harder species. 12"
is not recommended nailing schedule, 8-10" min if I recall NWFA standards
correctly. I do about 6" routinely as long as the tongue does not split.
You cannot have too many nails (if it doesn't split.)
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