Across King County, roof penetration flashing (per penetration) is currently landing between $109 and $118 per penetration, with most quotes near $114. Roofing is priced by the roofing square (100 sq ft) or by component; pitch, layers, and access change the number. These figures come from real contractor submissions and market data — not a national average — so they reflect Puget Sound labor and material costs. Check your own number free to see whether you're under, in range, or leaving money on the table.
Across King County, roof penetration flashing (per penetration) is currently landing between $109 and $118 per penetration, with most quotes near $114. Roofing is priced by the roofing square (100 sq ft) or by component; pitch, layers, and access change the number. These figures come from real contractor submissions and market data — not a national average — so they reflect Puget Sound labor and material costs. Check your own number free to see whether you're under, in range, or leaving money on the table.
The going rate for roof penetration flashing (per penetration) in King County is $109–$118 per penetration, based on 16+ real local contractor quotes.
Compare it to the live King County range above ($109–$118 per penetration). Below $109 you may be underpriced; above $118 and you'll want to justify the premium. Check your exact number free on The Going Rate.
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The Going Rate · Independent King County contractor pricing benchmark. Anonymous. Built from real contractor data.