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Step 5: Additional Tips

Converting a bathtub with a conventional window above it to a shower is dicey business, but the result is striking. Order a premade glass block window to fit your existing opening . Look under "Glass Block" in the Yellow Pages or online to find a supplier.

The key to a weatherproof, attractive glass block window both inside and out is to encase it in a custom-built wooden frame (Fig. A) The inside dimensions of the frame should be 1/2 in. taller and wider than the panel itself. That will give you room to adjust and shim the panel exactly and then inject expanding foam between the frame and the panel to lock it into the opening.

To begin, rip the top and side jambs to the thickness of the wall framing plus the exterior wall sheathing. The cement board will lap over the jambs. The windowsill should also be flush with the interior framing, but hang over the outside sheathing about 1-1/2 in. and have a 5-degree slope toward the outside to help shed water. To keep water from running behind the siding as it drips off the edge, cut a shallow groove (or saw kerf) in the bottom lip. Also, remember to flash behind the trim to keep the window watertight. Trim the window exterior to match the house, using caulk to seal between the trim and siding.

It's important to set the panel so it protrudes 1/4 in. past the finished tile surface. That way, a bead of caulk can seal the joint between the tile and block to keep water out of the wall cavity.

Tip:

Prime and paint the window jambs and sill before setting the glass block panel to save time-consuming painting details.

<p>I have a vinyl window that I want to install, but I have no idea what I am doing. I am wondering if you follow the same steps for vinyl installation that you have listed here. If you could please let me know that would be great. Thank you for sharing. http://cornerstonewindowskc.com/kansas-city-vinyl-siding/</p>
<p>Do you have to use a rebuilt window frame or can you just use the original frame from the window? I would like to install a glass window like yours, but I don't think I can rebuild or reconfigure the frame on my own. That's a little bit out of my range of abilities. http://www.innovationssidingandwindows.com</p>
This looks great. I really have been wanting these kinds of <a href="http://www.yarrow.mb.ca/windows.html" rel="nofollow">windows in Winnipeg</a> because I think they will look great. Thank you for posting this.
Great tips! I've been looking for someone that does <a href="http://www.mcwindows.com" rel="nofollow">window installation in San Jose</a> but all the prices I've found are out of my budget. My husband is quite handy so I think I'll have him give it a shot. Thanks for this instructable!
Thanks for sharing. I would love to install windows in Ottawa. I'm also remodeling my house. http://www.canadiancomfort.com/windows/windows.html
These are great instructions! I'm actually down in Vancouver right now working on a project. And I'm curious if you can install <a href="http://www.retroteckwindow.ca/retroteck-garden-vinyl-windows-vancouver-bc.htm" rel="nofollow">vinyl windows</a> the same way? Thanks!
Thanks for this! I love the glass block look and have been wanting to get something done but all the <a href="http://www.tricountyglass.ca/about.html" rel="nofollow">Cambridge glass</a> companies are so expensive I've put it off. I'm excited to get started on this project. Thanks again!
Thanks for this! I love the glass block look and have been wanting to get something done but all the <a href="http://www.tricountyglass.ca/about.html" rel="nofollow">Cambridge glass</a> companies are so expensive I've put it off. I'm excited to get started on this project. Thanks again!

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