Putting plastic sheeting or a tarp on a roof is often a temporary measure to cover damage and prevent further water intrusion. The best way to secure it depends on how long you need it to stay in place.
Temporary Roof Covering
For a quick and easy temporary fix, you can use weight to hold the plastic down.
- Using Sandbags: The easiest way to secure a tarp is to use sand bags to weight it down and keep it from blowing away. Place sandbags along the edges of the plastic sheeting, particularly where it's most vulnerable to wind. This method is best used as a temporary measure, as it may not withstand strong winds or prolonged exposure.
More Secure Roof Covering
For a longer-lasting and more secure installation, especially on a pitched roof, anchoring the plastic is necessary.
- Creating an Anchor Board: For a more secure and longer-lasting fix, create an anchor board.
- Obtain a 2 x 4-inch board.
- Roll the peak end (the top edge) of the plastic sheeting around the board multiple times. This creates a strong edge that can be secured.
- Position the board, with the rolled plastic, near the peak of the roof above the damaged area.
- Nail the tarp to the board, securing it firmly to the roof structure. Use roofing nails or screws suitable for outdoor use.
- Unroll the plastic down the roof to cover the damaged section.
- Secure the sides and bottom edge of the plastic. While not mentioned in the reference, common methods include using more sandbags, batten boards (thin strips of wood nailed over the plastic edges), or adhesive tape specifically designed for outdoor use.
Choosing the Right Plastic
While the reference specifically mentions a "tarp," various types of plastic sheeting can be used:
- Tarps: Typically made from woven polyethylene, often reinforced and waterproof.
- Heavy-Duty Polyethylene Sheeting: Available in different thicknesses (measured in mils). Thicker sheeting offers more durability.
- Construction Film: Often used for vapor barriers or temporary covers.
Ensure the plastic is large enough to extend several feet beyond the damaged area in all directions to provide adequate coverage.
Summary of Methods
Here's a quick comparison of the two methods based on the reference:
| Method | Security Level | Recommended Use | Materials Needed |
|---|---|---|---|
| Sandbags | Temporary | Short-term | Plastic/Tarp, Sandbags |
| Anchor Board | More Secure | Longer-lasting | Plastic/Tarp, 2x4 Board, Nails |
Note: These methods are generally for temporary fixes. For permanent roof repairs, consult a qualified roofing professional.
