||09-19-2011 09:28 AM
Finding Floor Joists
If you have a stud-finder, try it, it might work through the two layers. If not, then go back to old manual method. Go to a corner of the room and measure out 16" from both walls and make a square on the floor. I like to take a thin drill bit and start making holes until I find a joist; in the old days we used to use 16 penny nails. Once you find the first joist measure out 16" and see if the joist are running in this direction, if not, then measure from the other side. When you find the joists I suggest that you mark 4' marks and then check to see if the joist is till in line with your first hole. If so, find the edges of the joist in both places and then mark with a chalk line so you have a line to follow when you screw. I recommend screwing the entire floor because if you screw just the area's with squeeks you will find that pulling those area tight may create other gaps that will either squeek now, or they may later. Hope this helps.