A typical asphalt shingle roof has a layer of wood based sheet material usually plywood or chipboard and normally with a layer of tar paper.
Roof truss stud finder.
Place a clothes pin on the edge of a shingle directly over the truss to mark the location.
If this distance measures 4 inches you have a 4 in 12 pitch.
The finder also includes the ability to detect live ac wires to avoid drilling into dangerous electrical hazards.
Product description the chiptoolz rafter finder center line locator is the easiest way to find the center of a rafter ever.
The finder beeps when it finds a stud.
The reason is that stud finders are designed to scan through sheet materials such as drywall or plywood that have a fairly smooth surface and consistent thickness and density.
With the tool s patented combination of locating wire and 3 4 radius indicator key finding the center of the rafter has never been easier or faster.
High density stud finders will see through the plywood and find the rafters inside the attic.
8 inches and you have an 8 in 12 pitch.
Level to get to the desired height.
Even though you ve found a stud location say at an electrical box or heating grate it may not be at the height you need.
Hold the hd stud finder approximately 1 inch away from the roof surface and slide it across the roof.
Or measure from an end wall to the stud location.
Trusses run in a straight line from the edge of the roof to the peak.
Studscan for studs up to 0 75 deep and deepscan for targets around 1 5 deep.
How to transfer stud locations vertically.
Transfer stud positions up and down with a 4 ft.
These stud finders work the same way as normal stud finders but cost more.
It includes two scanning modes.