Cowart Landscape | Top-Rated Fence Builders in Lebanon, OR

The primary cause is heavy, moisture-retentive clay soils common in the Lebanon area, combined with sprinklers spraying directly onto wooden fence posts. Over time, this saturates the wood and softens the soil's grip on the post. Cowart Landscape can redesign and adjust your irrigation system to direct spray heads away from fence lines. If a post fails, our irrigation and fence teams work together to replace the post and install a wider concrete base that resists shifting, then reroute lines to prevent future water damage.

Look for posts that wobble when pushed, vertical cracks near the soil line, or a fence section that sags. Another telltale sign is standing water or unusually dark, damp soil directly adjacent to fence posts after the sprinklers run. In Lebanon’s freeze-thaw cycles, this can heave posts out of the ground. Cowart Landscape can inspect your fence and irrigation system together, identify problem spots, and recommend repairs or a full replacement that integrates proper drainage and smart irrigation placement.

The most effective solution is a two-part approach. First, repair or replace the fence using pressure-treated wood or composite materials, with posts set in gravel-aggregate concrete to improve drainage. Second, modify the irrigation system: install drip irrigation or adjust rotor heads to keep the fence-line buffer dry. Cowart Landscape handles both, so you get a seamless installation with coordinated warranty coverage. For existing homes near Lebanon’s older neighborhoods, we also offer retrofitting services to correct decades of sprinkler-to-fence exposure.