How deep should my fence posts be? 3' Vinyl fence with 4" gaps between posts.? | |
I went to Home Depot twice and asked this question to 2 different "experts". One said 24" and the other debated between 36" and 41". We live about 40 miles north of Detroit, Michigan.
Also, one said that 60 pounds of contrete is enough and the other said 120 pounds (per post). Some was to go around the post and some inside.
The posts are vinyl.
Answers:
1I would say 24" would be your absolute minimum, 36" is probably best, 41" sounds like overkill UNLESS you get a lot of frost heave
I've used 1 bag of concrete per post. make sure you taper the concrete so water runs to the outside of the plug (and use silicone caulk for where post meets concrete. Assuming posts are wood, you can also fit rebar, perpendicularly thru the post to provide firmer anchor to concrete. Aslo you may want to consider tamping peagravel into the base of your hole for better drainage.
PS. maybe a little deeper and more concrete for gate posts.
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