BW Fencing Inc. - El Cajon's Expert Fence Contractors

The most common cause is soil erosion around the post base, especially after heavy rains or from sprinkler runoff. In El Cajon, the clay-heavy soil can expand and contract with moisture changes, which loosens the post's grip over time. If the post wasn't set deep enough or with proper concrete, it’s more likely to move.

Check for loose posts, sagging sections, or cracked boards. If the wood is structurally sound but looks faded or has minor surface cracks, it probably just needs cleaning and a fresh coat of stain or paint for weatherproofing. But if the wood is soft, rotted, or the gate won't latch, a repair is needed first.

Yes, it can help. Weatherproofing, like applying sealants or stain, keeps moisture from soaking into the wood, which reduces swelling and shrinking. This helps maintain the post's fit in the ground. However, if the soil has already eroded around the post, weatherproofing alone won’t fix the movement—you’d need to stabilize the post first.