Muntins between glass7/31/2023 They can also be in between the panes of insulated glass. More sealant can be used and the glass is less expensive per square foot since it’s much less labor intensive to make one larger unit rather than four or six smaller ones. Muntins can be placed over the glass pane on inside of the house and the outside of the house. Two ancillary benefits of SDL: IG longevity and price. The larger muntin looks “chunky and clunky” versus the sleek appearance of the thinner muntin. ![]() When one compares a 3/4″ muntin with one 1 1/4″, the difference is striking. The primary reason for this approach is to maintain the original muntin width. ![]() SDLs avoid all these challenges by constructing the sash with a single IG unit with muntins applied to the inside and outside surface of the glass. Furthermore, the per square foot price is often many times greater for smaller IG units since labor becomes a much larger factor in their manufacturing. Units with minimized sight lines are, in our opinion, flirting with disaster and the lineal perimeter is many times greater than a single IG unit, therefore exacerbating the problem. However, the durability and life span of a unit is related very closely with the amount of sealant behind the spacer. We are having Anderson 400 installed in our new home. On a practical note, there are companies specializing in making “Low sight-line” IG units that can approach 5/16″. Pros and Cons of grills between the glass Zoe52 8 years ago We have to make a decision on our windows by tomorrow night. That means that one needs to add at least another 1/16 to 1/8 to the muntin width to ensure the glass will fit into its rebate. Many IG manufacturers have a tolerance of 1/16″ or more. When considering “true divided lites” using standard IG units, the thinnest possible muntin will be 1 1/8″, and that leaves no room for variations in sash or IG fabrication. The second illustration left shows the effect of not properly burying the spacer. In other words, an IG unit should have between 3/8″ and 1/2″ of spacer buried out of sight in edges of the sash. ![]() You can see from the multiple illustrations on this page, the spacer system separating the inner and outer lite of glass has a “Sight-Line” of from a minimum of 3/8″ up to around 1/2″.
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