How important is thickness of window glass? - GreenBuildingAdvisor
Jun 12, 2013 · Laminated glass as thin as 1/4" (~6.5mm) and as thick as 9/16" (~14mm) will meet the impact standards required by either Miami-Dade County or ASTM E1996. The commonality of both the thick lami and thin lami is the thickness of the plastic interlayer between the panes of glass is going to be very consistent...thin glass or thick, the choice of ...
Calculating the Minimum Thickness of Rigid Foam Sheathing
Oct 15, 2010 · Fortunately, building scientists have calculated the minimum foam thickness required for different wall thicknesses and different climates. By following their recommendations, your wall sheathing (or the interior face of the rigid foam) will stay warm enough to prevent moisture accumulation during the winter. Because foam sheathing reduces the ...
Rethinking the Rules on Minimum Foam Thickness
Nov 3, 2017 · When builders ask for advice about installing rigid foam on the exterior side of a wall, I usually refer them to one of my articles, “Calculating the Minimum Thickness of Rigid Foam Sheathing.” The article explains that the R-value of the rigid foam layer needs to be high enough to keep the OSB or plywood sheathing above the dew point during the winter. For example, a …
depth shown on the chart. For example, let’s say you want R-49 insulation installed in your 1500-sq.-ft. attic. Numbers vary by manufacturer, but according to CertainTeed’s table, you need a minimum insulation thickness of 181⁄ 2 in. and at least 25.2 bags of insulation per 1000 sq. ft. Adjust the bag count to your attic’s area: (25.2 x
Impact-Resistant Windows - GreenBuildingAdvisor
Oct 17, 2024 · Glass thickness and interlayers. Impact-resistant windows typically have a structurally reinforced frame and sash, heavy-duty hardware, and laminated glass. Given all laminated glass—and tempered glass —is impact-resistant to a greater or lesser degree, what makes the glass installed in windows intended to meet hurricane-resistant standards ...
The Revolution in Window Performance — Part 1
Mar 22, 2012 · Thicker air spaces. As the pressure to provide better-insulating windows grew in the 1970s, glass manufacturers increased the thickness of the air space from a quarter-inch to about a half-inch. This change can yield a dramatic improvement in energy performance — up to 40% in some cases — without much additional cost.
Window IGU thickness debate - GreenBuildingAdvisor
Dec 1, 2014 · GBA Detail Library. 1. Glass thickness. (Thicker glass is stronger than thinner glass.) 2. The optimum gap between the window panes of an IGU. 3. The different methods used to calculate U-factor in North America and Europe. The most common glass thicknesses for residential windows are 3 mm (for smaller windows) and 4 mm (for larger windows).
Windows, Glass, Ratings, and Installation - GreenBuildingAdvisor
Jul 10, 2015 · Tuning glass for specific applications is an important part of passive solar design. The National Fenestration Rating Council (NFRC) rates windows on three criteria: U-factor, SHGC, and visual transmittance (VT). Look for the NFRC label on rated windows (www.nfrc.org).
Choosing Triple-Glazed Windows - GreenBuildingAdvisor
Mar 26, 2010 · 1 15/16" thickness better than 1 3/8" I modeled a few window configurations in LBNL Window 5.2. I used 3mm clear glass (ID# 9801) for the outer lite, and LOF-EA2 (ID#9921), and 90% argon fill. A good manufacturer who uses a …
Do Europeans Make Better Windows Than We Do?
Oct 15, 2012 · Image Credit: GreenBuildingAdvisor. It should come as no surprise that Europe, home of the Passivhaus standard, produces some outstanding windows. Some builders of high-efficiency houses in North America turn to European window manufacturers for their glazing, even though some U.S. and Canadian producers also offer high-performance products of ...