When my shop shell was erected the windows that came with the package were aluminum framed and single pane glass. These gave me an R value equivalent to tissue paper. :confused_ With the recent cold snap and the electric heater running more often I decided to add storm windows to eliminate some of the HVAC loss. I had some rails for cabinet doors sitting on the shelf so I assembled them into a frame and glazed it with acrylic sheets from the blue BORG. Frame assembly was typical cope and stick routing supplemented with Kreg pocket screws. The frame grooves were sealed with a silicone enhanced caulk and primed with Kilz and two coats of Behr white satin exterior paint. Thin weatherstripping sealed the backs against the existing window frames and galvanized turn buttons hold them in place. Apparently they have reduced heat transmission with the created dead air space since the interior glazing is no longer cold to the touch. :eusa_danc Here are pictures of one of the three windows:
Trial frame fitting with blue tape joinery in place :gar-La;
Completed window (one of 3) installed.
Trial frame fitting with blue tape joinery in place :gar-La;
Completed window (one of 3) installed.
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