I'm putting in 2 egress windows in my basement and want to build a small wall around it (3 X 2 feet). About 25% of the window is above ground, in the end I'll have to dig about 30 inches. My window cranks open outside. The window wells that I see in stores are a little expensive. I was searching in the internet and found this link - http://www.egresswindowguy.com/timber1.html. One of the picture shows landscape timber being used for the well walls. This would work excellent for me as I'm thinking it would end up cheaper for me. I have some questions - I'd appreciate answers for any of them.
1. Why is landscape timber cheaper ($3.97) compared to almost similar sized treated lumber ($25). I think both of them are treated isn't it?
2. What are the precautions and preparations I need to do so that the landscape timber doesn't rot in 2/3 years?
3. I'm planning to prime & paint the landscape timber before using it to build the mini wall. Would a normal wood paint/primer work?
Thank You for the time.