*
I’m installing a 6-mulled-window set of wood casement windows in a 10-foot wide clear opening, in a load-bearing wall. The windows arrived in 2 sets of 3, to make handling them easier. My usual approach to installing windows is to anchor and block between the window and the header only at the corners, to allow for movement in the header without putting any load on the window. However, because of the width of this window set, and the joint that’ll occur in the center, I feel inclined to anchor the window to the header at the center, to prevent any inward/outward movement of the windows at the top/center. Is the double mullion at the joint (about 2-1/2″ total width) apt to be sufficient to take the load of any movement at that point, or should I not worry about anchorage at the center of the windows, and rely on the plastic installation fin and interior trim to keep the windows in place? Thanks.
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Featured Story
There are a number of ways to achieve a level foundation and mudsill.
Featured Video
How to Install Exterior Window TrimHighlights
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Replies
*
This will generate some argument but what I would do is fill it with low expansion foam too. The stuff acts as a glue and stiffens things up while doing what you need it to for energy savings. Just be carefull not to overfill. Even the low expansion has a lot of UMPHhh
*bend a peice of sheetmetal into an L. attach long leg to top of unit, atach short leg to header on inside of house. this will keep unit from falling out and will flex up or down as needed. some manufacturers probably supply these upon request.
*
I'm installing a 6-mulled-window set of wood casement windows in a 10-foot wide clear opening, in a load-bearing wall. The windows arrived in 2 sets of 3, to make handling them easier. My usual approach to installing windows is to anchor and block between the window and the header only at the corners, to allow for movement in the header without putting any load on the window. However, because of the width of this window set, and the joint that'll occur in the center, I feel inclined to anchor the window to the header at the center, to prevent any inward/outward movement of the windows at the top/center. Is the double mullion at the joint (about 2-1/2" total width) apt to be sufficient to take the load of any movement at that point, or should I not worry about anchorage at the center of the windows, and rely on the plastic installation fin and interior trim to keep the windows in place? Thanks.