Expert: Bruce E. Johnson - 2/3/2010

Question
I am finishing off our basement and wish to move a window. Is it possible to support not only the load-bearing wall, but all that lies above it to move the window?

Answer
Hi Steve, chances are that your floor joists sit on top of the basement wall.  This means that if you support those floor joists you will be supporting everything that sits on them including the walls above.  The trick is to support them  and give yourself enough room to do the work. Most joist type systems use a rim joist that the joists are nailed to.  This is what your wall sits on.  The rim joist will probably span over the section of wall you are cutting the window in so you won't need to get too crazy about shoring.  A simple stud underneath each joist will work about 3 feet from the wall.  If the joists run parallel to the wall you are working on and you have a double joist under the exterior wall then the double joist should support the wall above without any significant shoring required.  You didn't mention how large the window opening is or what type of construction (concrete or masonry) your basement walls are so I can't really comment on how to go about cutting or ,if necessary, reinforcing the header over the new window opening.  I hope this information helps, please feel free to write again regarding this or other matters, sincerely bruce e johnson..bejohnsonconsulting.com