Fence Builder: Trusted Commercial Fencing Serving Redwood City, CA 94061

In Redwood City, temperature fluctuations and moisture from fog and rain can cause wood fences to swell and shrink repeatedly. Over time, this stress leads to surface cracking and splits, especially in panels made from standard pine or fir. It’s common in neighborhoods with older fences or south-facing exposures. Regular staining or sealing can help, but once cracking starts, replacement of individual panels or reinforcement with metal posts is often the most effective solution.

Look for signs like warped, bulging, or bowed panels, nails popping out, and gaps between pickets or boards. Expansion damage often shows as vertical cracks near the middle of a panel or separation at the joints. If your gate is sticking or swinging differently, that can also indicate expansion or movement in the frame. A simple inspection after a rainstorm or hot spell will reveal most issues.

For minor cracks, we often use wood filler and re-stain to match. But for deeper splits or panels that have warped, replacing the affected panel or board is more durable. We recommend using pressure-treated or cedar wood that handles moisture better, and adding expansion gaps during installation. In some cases, swapping to vinyl or composite panels can completely prevent future cracking, especially in areas like downtown near traffic or where trees create shade and dampness.