Window Procedure: 9. Sash Glazing & Painting (Video).
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PostPosted: Tue Jan 28, 2014 6:19 am    Post subject: Glazing term question Reply with quote

Have had some windows made and getting ready for glazing. Reading threads it is stated that sarco multi glaze for use indoors only, while dual glaze outdoors only. Does this mean where it is being applied to sash or where it will be used?
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johnleeke
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Location: Portland, Maine, USA

PostPosted: Tue Jan 28, 2014 9:33 am    Post subject: Reply with quote

"Interior and exterior" is about the application of the Sarco glazing compounds, and is not about the service life. They are both intended to serve in sashes exposed to exterior weathering.

Where did you get your windows made?

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Engineer



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PostPosted: Wed Jan 29, 2014 4:34 am    Post subject: Replacement Window Sash Reply with quote

Thanks for clarification.

Had windows made by local mill work shop, Twin Restoration and Mill work, in East Durham, NY. They made sash from floor joists salvaged from my remodeling work. I will be painting and installing glass and once weather breaks will install in original window frames and get rid of the "plastic" windows my Uncle had installed.
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johnleeke
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PostPosted: Wed Jan 29, 2014 4:23 pm    Post subject: Reply with quote

The glazing and painting discussion continues over here at the new Save America's Windows website forum:


http://saveamericaswindows.com/forum/viewforum.php?f=10

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johnleeke
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PostPosted: Mon Sep 30, 2019 1:27 pm    Post subject: Paint Edge of Bottom Rail? Reply with quote

As usual with all work on these old buildings, it's a balancing act, there is no hard and fast rule on dealing with the bottom edge of the lower sash. No "always this," "never that."

First of all, the traditional practice is to leave that edge bare. This is based on four and a half centuries of design and refinement of the double hung window system. It could be that thousands of window specialists of the past knew what they were doing because they paid attention and kept doing what worked.

Then, consider the condition of the bottom edge of the rail. After a century or more, if it is in relatively good condition and never had paint, then it probably makes sense to leave it bare. Does the bottom rail have some deterioration caused by water coming in that bottom edge? Then it could make sense to give the edge some treatment.

Then consider the situation around the sash and the window. Does the sill have a good slope to drain water outward? Is there a gutter, or window cap, or roof above to help keep water off that bottom edge? If so, the edge will probably be better off left bare. If not, consider giving the edge some treatment.

Here I am using the word, "treatment." Painting that bottom edge is just one treatment. There are other treatments that could be much more effective, depending on the edge's condition and the situation. If the edge is likely to get wet from time to time, but have a good chance to dry out each time, then you might give it a water-repellent treatment that will resist liquid water helping to keep the wood dry, and allow water vapor to pass out helping to keep the wood dry. If the edge will frequently get wet and not have much chance to dry out, then painting might make sense.

I would think twice about painting the end-grain of the stile. That mortise & tenon joint needs to dry out, and painting the end-grain cuts the drying opportunity by half or more. Perhaps in high moisture situations this could make sense.

In high moisture situations I often treat the whole bottom rail and the stiles with a migrating borate preservative that prevents fungus and bugs throughout the entire inner volume of the wooden part. This is more certain to prevent deterioration of the rail that any treatment on the bottom edge.

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