Screw Pile Foundations on Manitoulin Island
Brad Wright installs Postech screw piles out of Gore Bay. Manitoulin now has a certified installer based on the island, instead of a crew coming across the swing bridge.
He also runs 10th Line Lumber Co., a family sawmill going back four generations here. He mills the lumber for camps and cottages, builds a fair number of them himself, and used to send the foundation work off-island. Now the piles land in the same yard as the lumber, at 138 Tenth Line.
The island is mostly rock
Manitoulin is limestone under a thin skin of soil. Frost rules put a footing six feet down, and in much of the island there is nowhere near that much ground to dig into. It is why so much of what gets built here ends up on blocks, and why so much of it eventually moves.
A screw pile is driven by machine until it reaches solid bearing. Nothing excavated, nothing poured, no cure time. And on an island where every yard of concrete arrives over one bridge, that changes the math.
What a job looks like
Most jobs are done in a day, with drawings for your permit and Postech's written lifetime warranty against frost heave.
Camps, cottages, decks, docks, additions, sheds, solar racking. Camps, cottages, decks, docks, additions, sheds, solar racking. Every site on this island sits on something different. Call and describe yours.