Retaining walls can level a sloped yard, prevent erosion and look beautiful! Check out these distinctive retaining wall ideas ...

But for ground contact, as in a retaining wall, you need wood labeled UC4. After that, you should see an A, B or C, signifying general use, heavy duty or extreme duty. Advertisement.

I want to build a three-foot-high retaining wall behind my house out of pressure-treated wood. Thoughts?—Shawn B., Sioux City, Iowa Go ahead, but do your homework. First, call 811 before you dig ...