concretefoundationwood
I uncovered a situation where a couple header boards were embedded into the basement foundation. You can see in the photo they punched a hole in the foundation and ran the boards through it.
I can't move the boards, so would like to protect the end grains before putting on a concrete patch.
Is there a good way to seal the wood from the concrete?
Call in a pro.
This site can help with a lot of problems found in and around the home, but in some situations a problem cannot be diagnosed and solved effectively on the internet. Some problems just have to be looked at, and inspected before a proper solution can be proposed.
Comment converted to answer
I realize that you don't want to proceed with the project but I thought I'd answer anyway in case someone else is curious. I am a licensed contractor and my company specializes in basement remodeling; we have done several window expansions or additions in concrete foundations. A few things:
Though you can support the new opening with pressure treated wood (according the engineers prescription, of course), most likely the engineer will recommend a steel frame in the newly cut opening. We use a 4"x4"x1/4" steel frame that the engineer signs off on. You can have one made to fit your opening at your local steel fabricator. (see pic below)
After you install the frame with bolts into the concrete and silicone sealant around the entire perimeter, the installation of the window is a piece of cake.
Best Answer
The end of that wooden beam will move slightly with humidity and temperature changes, attempts to fill that shallow void with concrete may end in dissappointment.
I'd cut a small rebate using a oscillating tool or grinder and place a piece of fibre-cement sheet over the opening, glue it in-place with builder's filler. then render over it to match the existing footing.