What is Roof Tarp Sizing?
A roof tarp provides emergency protection for a damaged roof until permanent repairs can be made. Calculating the correct tarp size ensures full coverage of the affected area with enough extra material to secure the edges and handle irregular shapes. Undersizing a tarp leaves gaps for water intrusion, while oversizing wastes money.
How to Calculate Roof Tarp Size
Here is the formula:
[\text{Tarp Size} = \text{Roof Area} \times 1.5]
Where:
- Tarp Size is the recommended tarp area.
- Roof Area is the measured area of the section that needs covering.
Both values use the same area unit (ft² or m²). The 1.5 multiplier accounts for overlap, edge securing, and roof features.
Calculation Example
A damaged section of roof measures 700 ft².
[\text{Tarp Size} = 700 \times 1.5 = 1{,}050]
You need a tarp of at least 1,050 ft² to properly cover and secure the area.