Editor's Review: Shim Screws for Vinyl Replacement Windows
review date: May 17, 2012
The GRK vinyl window screw is a fastener and shim rolled into one. When driven through the mounting hole in a vinyl replacement window, the screw captures the wall of the vinyl extrusion between a built-in lip and the underside of the screwhead, allowing the window frame to be adjusted in or out until it’s plumb. GRK sells the star-drive screw in several lengths, with or without a white powder-coated finish on the head; that’s handy for situations where the fasteners would be visible. Pricing starts from about $14 for a box of 100 screws.
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