I broke off part of the tongue in my doorway shown near the knee pad. About 8 inches opf missing tongue, although the remaining end of the tongue is also cracked. The next board could be long enough to receive several inches of tongue from the other boards on each end of this damaged board. Would the tongues from the neighboring boards be enough tongue to hold the next board in place considering all the other boards that will fit to the next board will also hold it in place? Image is at:
http://havenport.com/floor.JPG If so I guess I should try a single board running the length of the doorway here as it would pick up the most possible tongue, but its ends will fit under the doorway jambs.
The three nails or staples currently in this broken board still go well through it at the 45 degree angle so I think they will hold this broken board in place and prevent it from lifting.
Not sure I know how to carve out a groove in the damaged board to insert a spline if I have to do so.