If you have an exterior brick cement or stucco wall then you will not be able to make a hole in the wall.
Finding inside of wll fro attic.
Place the shingle or plywood onto the tar and spread more of the tar around the edges of your patch.
Cut the bottom straight portion off from a metal coat hanger.
Map the roof leak.
Bat guano looks like tiny elongated black pellets.
If you notice any of these signs try using a moisture meter which can be bought at your local hardware store.
If you need to find the wires inside your walls you ll probably want a non invasive way to look for them.
Subterranean termites tunnel under the ground and climb up your foundation walls to feed on the inside of your walls silently for years.
Look inside the attic if possible to identify the direction in which the rafters or joists travel.
When working from a basement inspection of the area in contact with the foundation or sill will be required.
You will have to enter through the inside even if the pathway to get to the beehive is.
Besides wall damage you may be able to hear dripping coming from inside the wall.
Use a putty knife to spread the tar into the leaking hole on the inside of your roof.
Not just inside your walls but inside of the wood itself.
When working from an attic space it will be significantly easier to access a wall space on the floor below by.
After all without a method to your madness you d just be hammering unsightly holes through your drywall in a vain attempt to cross paths with your wires.
To use it scan the device over the wall to find the area that has the highest moisture reading which will be where the leak is coming from.
There can be thousands of them in there all the way from the support beams in your cellar to the trusses in your roof.