Boarding up a window from the inside is a practical way to protect glass during severe weather, secure an unused room, or prevent break-ins when you are home. With the right materials and a careful approach, you can complete the job quickly while avoiding common mistakes that lead to rattling panels or difficult removal later.
This guide walks you through measurement, cutting, and fastening techniques so your temporary window board up remains sturdy, safe, and easy to remove. Follow these steps to balance speed with quality, ensuring the interior surface stays clean and the panels stay firmly in place.
| Material | Description | Typical Thickness | Best Use Case |
|---|---|---|---|
| Plywood | Durable, easy to cut, holds screws well | 1/2 to 3/4 inch | Most common choice for storm protection |
| MDF or Particleboard | Smooth surface, inexpensive | 1/2 inch | Short-term indoor use only |
| Exterior-Grade Plywood | Water-resistant glue and veneer | 1/2 inch | Garage or windows exposed to leaks |
| Glass or Polycarbonate Sheet | Clear option with light transmission | 1/4 inch glass or polycarbonate | Temporary glazing that allows light |
| Softwood Boards | Lighter, easier to handle | 1 x 4 or 1 x 6 | Small windows or quick bracing |
Measure and Prepare the Window Area
Accurate measurements are the foundation of a secure interior board up. Use a metal measuring tape to record both the frame opening and the diagonal distances, confirming the window is roughly square.
Taking Exact Measurements
Measure the height and width at the top, middle, and bottom, then choose the smallest dimensions for the board size. Subtract 1/4 inch from both width and height so the panels slide into place without binding.
Choose and Cut the Boarding Material
The right material affects sturdiness, weight, and how easily you can remove the board later. Plywood offers the best balance for most situations, while MDF works only for short interior jobs.
Cutting Panels to Size
Use a circular saw or hand saw with a straight edge, cutting slowly to avoid splintering. Sand rough edges lightly so the boards seat evenly against the window frame and sill.
Secure the Panels with Fasteners
Fastening method determines how quickly you can remove the boards after the threat passes. Choose screws over nails because they hold firmly yet come out cleanly without splitting wood.
Placement and Spacing Guidelines
Position screws every 6 to 8 inches along the frame and at least 2 inches from the edges. For large panels, add a center support or cross-brace to reduce vibration and prevent rattling during wind.
Seal Gaps for Weather and Light
Even tight boards can leak air around the edges. Temporary foam weatherstrip or magnetic draft stoppers help maintain comfort and reduce noise when the window remains closed for days.
Using Insulation and Light Control
For extra protection, add a layer of clear plastic secured with removable film tape, which keeps rain out while allowing light. Remember to remove plastic during the day to prevent condensation buildup between glass and board.
Removing Boards Safely and Quickly
Plan the removal process while installing, labeling panels or numbering screws so reassembly is straightforward. Keep all fasteners in a small container so you can restore the boards to storage or reuse them later.
Inspecting for Damage After Removal
Check the window frame and sash for pressure marks, stripped screw holes, or cracks before installing again. Address any damage immediately to avoid long-term issues when the window returns to regular service.
Key Takeaways for Boarding Up a Window from the Inside
- Measure carefully and cut panels slightly smaller than the frame opening.
- Plywood and exterior-grade materials provide the best protection and durability.
- Use screws spaced every 6 to 8 inches for a secure yet removable installation.
- Seal gaps with foam tape or magnetic strips to reduce air, light, and noise leaks.
- Plan removal steps in advance and inspect the frame after taking boards down.
FAQ
Reader questions
How do I board up a window when I do not have a saw?
Use strong scissors or a utility knife to cut rigid cardboard or foam board to size, then reinforce with duct tape along the edges for a temporary hold.
Can I use glass instead of plywood for interior boarding?
Yes, tempered glass or polycarbonate sheets are safer than regular glass and allow light, but they are heavier and require secure framing to prevent cracking.
Will screws damage my window frame when I remove them?
If you predrill pilot holes and avoid overtightening, removal should leave only small holes that can be filled with wood putty or touch-up paint.
How long can I leave boards in place before checking the window?
Inspect at least once a week, and remove boards during dry conditions to air out the frame, preventing moisture buildup and mold growth.