How to Install a Bay Window

Step-by-Step Guide

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   Step 1: Drill evenly spaced pilot holes around the bay window's inside perimeter.

   Countersink the holes., Place the bay window onto the prepared sill in the rough opening.
   
   The opening's framing should fully support the windowsill.,, Use sealant to secure the shims., Test that the window operates correctly., The screws should go through the installed shims., Spray adhesive on the sides and head of the window's nailing fin, building wrap and sheathing.
   
   Apply self-adhesive flashing on the stud-frame wall around the bay window.
   
   Use a J-roller to press the flashing down.
   
   Readjust the flashing if necessary so it is free of gaps or bubbles. , The support system should be able to handle at least 750 lbs. (340.2 kg) to include additional weight on the window from people or household items., Add low
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   Step 2: Work with at least 1 other person to install the window.

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   Step 3: Hammer a galvanized roofing nail into a lower corner of the window's nailing fin to hold it in place.

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   Step 4: Line up side jamb shims with the pilot holes to allow fasteners to penetrate the shims.

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   Step 5: Check the bay window to make sure it is level

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   Step 6: plumb and square.

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   Step 7: Fasten the bay window's jambs

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   Step 8: head and seat board by drilling pan head screws into the pilot holes.

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   Step 9: Apply flashing to a stud-frame wall.

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    Step 10: Use a cable system or seat board bracing to permanently support the bay window's weight.

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    Step 11: Seal the window's 4 corners with a 1/4 inch (0.63 cm) layer of sealant.

Detailed Guide

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