Locating Ceiling Joists
Remove a light fixture and locate the joist with a coffee stir stick. Then get the tape measure and measure 16 inches from the wall.
Building The Perfect Rafter Part Iii The Front Deck Header Ceiling Joists Front Deck Deck Layout Building A Deck
Once you understand that then it will be easier to find the joist.

Locating ceiling joists. I had the same issue with joists and the stud finder which was completely useless. Look very closely at the ceiling for imperfections where the nails or screws were installed when the drywall was installed. Each joist is exactly the same distance apart.
I actually didnt get my pole right under a joist and I didnt realize it at first. High-quality stud finders are pricey but you can rent one from a construction supply rental store for a reasonable fee. When the device lights up youve found the ceiling joist.
Although ceiling joists are not studs -- studs run vertically in walls -- a stud finder is an excellent way to locate them in a drywall-covered ceiling. These measurements are never mixed together. It eventually started to push my ceiling up and it left a crack.
Since you are planning on installing a new lowered ceiling just cut out a 1x1 section of the ceiling find the joists visually and then assume it is spaced 16 oc - Try and see if that is the correct spacing of the joists by drilling in long screws and see if you hit the joists. If your property has a party wall the chances are there will be a joist along this wall and its a good chance its a starter joist. Ceiling joists are the lateral beams within an attic space or between floors of a home to which the plaster or drywall.
This would calibrate the depth of the stud finder and enable it to locate the density of the ceiling joist. If you can locate one you should be able to locate them all by using this measurement. There are two ways to find the ceiling joist.
Look very closely at the ceiling looking for areas that are sagging. Tap the ceiling lightly with your knuckles. You are trying to differentiate the hollow sound that indicates a bay or.
I went out to my local hardware store and bought a rare earth magnet and used it to locate the nails in the joists. You will be able to locate the ceiling joist between the sags. You also know the location of the nailsscrews so you can avoid going in to them.
A simple device called a stud finder can then pinpoint the location of the joist. Once you locate a joist you can drill on either side until you find one of the edges mark it and then the other edge is usually 1-12 inch away it can be more for manufactured joists mark it then attach to the middle of the two lines which is of course the middle of the joist. If the driver is short it cannot reach any pipework or wiring and will not pierce anywayThe type of locator suggested are easily fooled by debri and lathe and plaster ceilings.
Run the stud finder over the ceiling in that area. If not try again but this time measuring 24 inches from the wall. If it doesnt find a joist measure 24 inches from the wall and try that area instead.
Extend the tape measure out 24 inches if. Push a skinny screwdriver thru at the edge of the room and locate first timber measure of 400mm and try again till located move across untill all are located. Run the stud finder over the area.
How to locate a ceiling joist. One of the first bit of key information you need to know in locating a ceiling joist is that their measurement is consistent. When it lights up it has reached the edge of a joist.
How to Find a Wall Stud or Ceiling Joist 2 Easy Ways While renovating our barn house we quickly found out how hard it is to find a stud in the wall using one of those electronic stud finders you see at the hardware store. You locate several screwsnails by sliding the magnet around and mark around them with a pencil once you have several you know the line of the joist. This means it has detected a variation in wall thickness most probably indicating a stud joist in the case of a ceiling or noggin.
We plugged in a battery and it beeped booped in the most random ways possible as we tried to use it. Place the end of a tape measure against the corner created where the wall meets the ceiling. The distance will either be 16 or 24 inches on center.
Moving over the detected area one light goes out to show the thickness detected is not varying however when the end of the stud is found obviously the wall thickness reduces again. It is one or the other. Your standard centres on ceiling joist are 400mm about 16 inch.
Extend the tape measure out.