Rushed a retaining wall with cheap blocks from Lowe's and paid for it twice

Ngl, I used those $2.99 landscape blocks for a 4-foot retaining wall last spring and it started bulging after 3 months. Had to tear the whole thing down and spend $680 on proper interlocking blocks and gravel - has anyone else learned this lesson the hard way?

2 comments

2 Comments

nina_butler8h ago

@simon378 makes a fair point about installation, but I've been there too. With a 4 foot wall, those cheap blocks just don't have the weight or the interlock to hold back that much soil pressure, even with good drainage. I had a neighbor who used them for a 3 foot wall with proper gravel and compacted base, and it still bowed out after two years. The block itself flexes, and the little lip on top isn't designed for that kind of load. You made the right call tearing it down and starting over.

simon37812h ago

I gotta say, I see this "learned my lesson" posts all the time and half the time it wasn't the blocks fault, it was bad installation. Those little cheap blocks have their limits, sure, but a 4 foot wall is pushing it for any kind of block unless you backfill right and put gravel behind it. I've seen guys use those same blocks for a 2 foot garden border and it holds up fine for years. Sounds like maybe the soil was wet or the base wasn't compacted enough. Not saying the blocks didn't help it fail, but people love to blame the material instead of their own shortcuts.