SearchAsk us anythingarrow rightShould concrete fence posts move?Concrete it if you loose the dig as deep as possible. The posts should stay where they are.Let's Get It Fixed!Our virtual experts can diagnose your issue (for free!) and resolve simple problems.Chat with a live expertChat nowCall 1 (855) 466-3948Call nowRATESHARECopy linkTwitterFacebookmagnifying glassLink copied to clipboard.SUBMIT AN ANSWERShop Recommended ProductsShop HomeX Recommended ProductsRELATED QUESTIONSIs 2 feet deep enough for fence posts?2 feet is the minimum depth that you should dig your fence post holes for. To dig the holes one-third to one-half of the post's aboveground height, is a general formula. The deeper you dig the holes, the more stability your fence has.Should you fill concrete expansion joints?Expansion joints should always be sealed and filled with a flexible joint seal. Contraction joints can be filled the same way after a coating is applied.Should a fence wobble?Before wooden fence posts cause other fence parts to loosen, they should be repaired quickly. It is easy to tighten posts that have been in the ground for less than five years. decay is more likely in older fences.Can I drill concrete fence posts?To avoid blowing the concrete post when drilling thro', use a much smaller drill-bit first, and then use the bolt-clearance size drill from both sides.Should I use 4x4 or 6x6 fence posts?The standard is 4x4. 6x6 posts make it look more substantial if you do it as a privacy fence. I wouldn't want that either. You can use 6x6's if you're doing a "good neighbour" style fence.Should roofing nails go through the sheathing?The nail won't fully penetrate the 3/8′′ roof sheathing. Is this true? The best way to determine if the proper nails were used is to look in the attic, if the roof has 1/2′′ sheathing you should be able to see the nails sticking through in to the attic.