What Materials Do Pros Use for Emergency Board-Up?

The main material for a board-up is exterior-grade plywood. Pros usually choose a thickness of 7/16 inch or thicker, like 3/4 inch, for better strength. The plywood is cut to cover the entire opening, including a few inches beyond the frame, so it anchors into solid wall structure.

Using the right grade matters. Exterior plywood resists moisture better than interior types, which is important after a storm or break-in. The pros also treat the cut edges to prevent water damage. This helps the boards stay solid until permanent repairs happen.

• 7/16-inch or 3/4-inch exterior plywood
• Cut to fit opening plus 4 inches overlap
• Edges sealed with wood preservative
• High-strength screws, not nails
• Wood shims for a snug fit
• Drill with a clutch to avoid stripping

To keep out rain and drafts, pros add a layer of plastic sheeting or a weather-resistant barrier behind the plywood. This is especially useful in wet conditions. They also use caulk or foam sealant around the edges to block moisture and insects.

For doors, pros may use a heavy-duty latch or hasp to secure the plywood from the outside. The goal is to make the opening as watertight as possible. This protects your home from further damage while you arrange for permanent repairs.

Board-up is often needed after a storm, a break-in, or a fire. It temporarily protects openings until permanent repairs can be made. If your home has a broken window or door, securing it quickly reduces the risk of water damage, theft, and safety hazards.

If you live in Bellingham, keep a list of emergency contacts and your shutoff valve location written down. The pros can handle the board-up, but you should also check for other damage like roof leaks or flooding. Acting fast helps limit the damage.