How To Find Floor Joist - Carpentry - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Carpentry


Thread Tools Display Modes
Old 09-19-2011, 08:35 AM   #1
Join Date: Sep 2009
Location: Suburb of chicago
Posts: 195
Rewards Points: 152

How to find floor joist

I'm having new carpet installed, but before I have them come over I wanted to screw down the floor, (I have few sqeaks) how can I find the joist under the sub floor, I have no pattern to follow either. I removed the carpet from one bedroom, it appears, what is down is 1/2" chip board, on top of that another 1/2" laminant (which is stapled down) so I cant follow any nailing pattern.


turbomangt is offline   Reply With Quote
Old 09-19-2011, 09:22 AM   #2
Framing Contractor
Join Date: Feb 2009
Location: NE Ohio
Posts: 1,125
Rewards Points: 562

How to find floor joist

poke around with a few short nails to determine where a joist is. Once you find the center of one, (they are typically 1 1/2") try measuring over 16 inches and check for center of another. Other possibilities are 12" and 24" on center, although 16 is very common.


sixeightten is offline   Reply With Quote
Old 09-19-2011, 09:27 AM   #3
AlbacoreShuffle's Avatar
Join Date: Sep 2011
Posts: 131
Rewards Points: 75

How to find floor joist

Crawl under the house and run a screw up next to a joist and use that for a starting point.
AlbacoreShuffle is offline   Reply With Quote
The Following User Says Thank You to AlbacoreShuffle For This Useful Post:
gregzoll (09-19-2011)
Old 09-19-2011, 09:28 AM   #4
Old Hand
Join Date: Sep 2011
Location: Silicon Valley, CA
Posts: 26
Rewards Points: 25

How to find floor joist

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.
iliketowork is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can't find good laminate comparison anywhere cpsilo1 Flooring 3 03-20-2011 04:49 PM
Where can I find good contractor and building material suppliers? denniis Off Topic 5 03-10-2009 09:27 AM
need to find wall switch remote..does that exist? tarheelblue Electrical 7 09-05-2008 05:51 AM
find switch to control outdoor light fixture CaymanAg Electrical 1 07-10-2005 08:43 PM
New to find a contractor - Northern NJ jhirsch1 Building & Construction 2 03-23-2005 08:24 PM

Top of Page | View New Posts