single pane casement window with inside storm window
Jeff Dorenkott
5 years ago
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geoffrey_b
5 years agoHomeSealed Exteriors, LLC
5 years agoRelated Discussions
Double or single-paned for replacing vintage casement windows?
Comments (7)No storm windows--happily (or sadly for lovers of seasons!) we're in Northern California, where the climate is pretty temperate. (To wit: we've been able to just lean a board over the opening where the window once was for the past week...) At this point we've ruled out insulated glass and are down to deciding between laminated glass and just sticking with single-paned. (We learned that insulated glass will look quite different because the muntins need to be shallower to accommodate the thicker glass; this is apparently less of an issue with the laminated glass because it's thinner.) Still not sure we will get enough benefit from the laminated glass to be worth the extra cost, so it may just come down to the final estimates, which I hope to have today--but still welcome any other thoughts! This post was edited by artemis78 on Mon, Mar 17, 14 at 14:34...See More1910 neoColonial single-pane 6x9 with ugly triple-track storms
Comments (2)Thank you for these ideas. I wonder whether there is a high=quality, attractive low-E/high-R exterior fixed storm window, ideally wooden but clad for low maintenance, that has a removable panel to switch in a screen panel in summer? That would have the advantage of protecting the (restored) old wooden 6x9 sash, and on lower floors would enhance security -- it might be possible to specify whether an upper or lower panel is removable in the fixed storm, for security reasons, too. Then downstairs windows could be opened from the top for better ventilation of hotter air....See MoreStorm Window trap heat inside during summer?
Comments (3)Dual pane windows are also known as IG or Insulated Glass windows. Insulated really isn't the correct term to use for multipane windows however, although it is commonly used by pretty much everybody. Correctly, IG really means INSULATING glass since the glass isn't insulated in any way, but it does insulate. See where I am going with this? R-value describes a material's resistance to thermal transmittance. Insulation is generally rated by its R-value. A single lite of 1/8" glass has an R-value approaching 1. Add a second lite and the R-value jumps up to almost 2 (I have always done well in higher mathematics), so by adding a second lite, we have doubled the insulating value of our window. If we have a basic, simple, no-frills dual pane IG unit we have a center-of-glass R-value approaching 2. However, if we happen to have a single pane window and a single pane storm window installed then we find that we have an R-value approaching 2. So, two lites of glass is two lites of glass. The difference between the IG unit and the single lite with storm is negligible - when dealing with the R-value insulating capabilty of the clear glass lites. However (there's that word again), R-value only deals with conductive thermal transfer and doesn't take into account either radiant or convective thermal transfer. And on first glance it appears that your question specifically concerns radiant energy gain. "...the light passes through the storm, bounces off the single-pane or your house, changes wavelengths, but it can't pass back out through the storm window because it changed wavelengths, so the heat just stays in your house." Simply put - no. Consider the three "light" source we deal with. First is UV, then visible light, then IR light. UV stands for Ultraviolet and ultraviolet really doesn't account for any appreciable heat gain in your home (or anywhere else for that matter). UV does account for that burning sensation that you get when you are in the sun for two long (that would be UVB, btw), and UV does account for that gradual fading that you see in your home's furnishings, carpetsa, drapes, etc - and that would be UVA. And as an aside, since I mentioned UVB results in sunburn, UVA results in tan - and it is also the primary contrubutor to skin cancer. Go figure. Ordinary glass is opaque to UVB - in other words, UVB is blocked by ordinary glass. UVA, on the other hand, passes right thru glass. About 95% of the UV that we see down here is UVA and the other 5% is UVB. We don't get natural UVC (remember the ozone layer?), which is a good thing since it would potentially/eventually kill us. Next in the spectrum is visible light. Visible light is a good thing for many obvious reasons. As intended, visible light does pass rather well thru clear glass, about 90% of the visible lite that impacts a clear glass window goes right on thru. The remainder is either absorbed or reflected by the glass. Again, 90% transmittance is a very good thing for many obvious reasons. However, visible light entering our homes does result in an appreciable heat gain within the home. Visible light is a source of radiant heat gain and visible lite in the shorter wavelengths is responsible (along with UVA) for that annoying fading thing. Next on the list is IR or Infrared light. Infrared is the primary source of radiant heat and it is the primary source of heat on our world. No infrared, no us. We break down infrared into different wavelength or frequency bands. Near or short wave infrared is direct solar gain. Far or longwave infrared is not (re: what you were told). Infrared light passes quite readily thru clear glass. About 80% of near infrared passes thru "ordinary" clear window glass and up to about 85% of far infrared passes thru. I will have to finish this later. It is already pretty long and I have run out of time this evening. Hopefully, someone might find it interesting or even a bit informative....See MoreSingle pane windows....Coooooold!
Comments (12)The biggest culprit for "cold windows" is air infiltration and not radiant heat lose due to the single panes. Old windows with a pulleys can have a lot of points of air infiltration. In addition to the storm windows already mentioned a good tube of chalk on the outside around the window trim and anywhere that sir can leak into the window system. The blower test that was mentioned is excellent for finding these leaks. http://www.oldhouseguy.com/windows/ https://thecraftsmanblog.com/replacement-windows-the-real-story/ https://www.windowpreservationalliance.org/Library http://www.oldhouseauthority.com/archive/old_windows http://www.communitypreservation.org/windows Hope this helps...See MoreJeff Dorenkott
5 years agoHomeSealed Exteriors, LLC
5 years agoJeff Dorenkott
5 years agoHomeSealed Exteriors, LLC
5 years agoSimply Great Windows, LLC
5 years agoJeff Dorenkott
5 years agolast modified: 5 years agoSimply Great Windows, LLC
5 years agoJeff Dorenkott
5 years agoWindows on Washington Ltd
5 years agoSimply Great Windows, LLC
5 years ago
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