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Serious question, I always thought a 2x4 screed was fine for everything
I was reading an old trade manual from the 80s I found at a yard sale in Tacoma. It said for a slab over 15 feet, you should use a 2x6 screed to stop it from bowing in the middle. I've been using a 2x4 on 20-foot pours for ten years. I tried the 2x6 on a garage floor last week and the flatness was way better. Has anyone else switched to a thicker screed for bigger jobs?
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alicehernandez6mo ago
That old manual is onto something. The extra stiffness from a 2x6 just handles the long pull better. Makes a real difference on the bigger slabs.
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milesbailey6mo ago
Yeah, that "extra stiffness" point came up in a forum thread I saw.
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jenny_hall6mo ago
Oh man, my last DIY project proved I should probably just stick to the manual. I added "extra stiffness" and got a wobbly mess instead.
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