In some cases, it may be necessary to cut valley flashing to ensure a proper fit during roof repairs or replacements. This is especially true if the existing flashing has been damaged or if you are installing a new roof altogether. However, cutting valley flashing should be undertaken with caution to preserve its functionality and maintain a watertight seal.
Using Tin Snips for Cutting Valley Flashing:
Tin snips, also known as aviation snips, are a versatile tool used for cutting various types of sheet metal, making them a popular choice for DIY enthusiasts and professionals alike. However, when it comes to cutting valley flashing, tin snips might not be the ideal tool for the job.
Valley flashing is typically made of a thicker gauge metal, often in the range of 16 to 24 gauge. While tin snips can handle thinner materials, cutting valley flashing may be challenging due to its thickness and potential for deformation during the cutting process.
Alternative Tools for Cutting Valley Flashing:
To achieve clean and precise cuts without compromising the structural integrity of the valley flashing, alternative tools are recommended. Some suitable tools for cutting valley flashing include:
- Metal Shears: Metal shears are designed specifically for cutting through thicker gauge metals. They offer a more robust cutting action and provide better control, resulting in cleaner cuts and reduced metal deformation.
- Circular Saw with a Metal-Cutting Blade: If you have access to a circular saw, it can also be utilized for cutting valley flashing. Ensure that you use a metal-cutting blade with fine teeth to prevent excessive vibration and ensure smooth cutting.
- Snips or Shears with Offset Blades: If you still prefer to use tin snips, consider opting for snips or shears with offset blades. These specialized tools are designed to handle thicker materials more effectively, including valley flashing.
Safety Precautions:
Regardless of the tool you choose, safety should be a priority when cutting valley flashing. Follow these essential safety precautions:
- Wear Gloves and Safety Glasses: Protect your hands from sharp edges and your eyes from flying debris by wearing appropriate gloves and safety glasses.
- Secure the Flashing: To ensure stability during the cutting process, secure the valley flashing in a secure vice or clamp it firmly in place.
- Proper Cutting Technique: Use slow, deliberate cutting motions to minimize the risk of accidents and ensure a precise cut.
While it may be tempting to use tin snips for cutting valley flashing, it’s not the most suitable tool for the job due to the thickness of the flashing material. To ensure clean, precise cuts without damaging the flashing, consider using metal shears, a circular saw with a metal-cutting blade, or specialized snips or shears with offset blades. By utilizing the right tools and following appropriate safety precautions, you can successfully cut valley flashing while maintaining its functionality and effectiveness in protecting your home from water damage.