How do I ensure I’m screwing into a structural member?
Documented on the Installing structural screws to help secure our build
Published August 18, 2026
Locate rafters or purlins using measurements from the eave/birdsmouth, a stud finder designed for roofs, or by inspecting the underside in accessible attic spaces.
Full Answer
Locate rafters or purlins using measurements from the eave/birdsmouth, a stud finder designed for roofs, or by inspecting the underside in accessible attic spaces. Mark centers and verify alignment before driving screws.
Documented In This Build
Related Knowledge
What type and size of structural screw should I use?Can I install these screws myself or should I hire a pro?What torque should I use on the blade bolt?What maintenance is required to keep the runtime optimal?What were the most critical problems found on the test drive?Can these issues be fixed cheaply or will it cost a lot?How do I know if the leak is from the oil pump or the tank?Can I fix the leak without buying a new pump?
Related Parts
Structural screws
$0
Solar rack / mounting rails
$0
Related Tools
Personal protective equipment (PPE)
Socket or hex driver bits
Tape measure and marker
Ladder / roof access equipment
Impact driver or drill
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