Metal Roof At Valleys

Metal roof flashing installation.

Metal roof at valleys.

How to cut metal roofing to fit valleys. How to flash a metal roof. Typical issues with metal roof valleys include debris collection improperly lined shingles faulty underlayment and problems with cascading water flowing across the valley and beneath shingles on the adjacent slope. First clean the debris out of the valley including sawdust nails and whatever else is in there.

Better roof faster install. Whether for slate shingle or metal roofing valley flashing adds detail and helps to direct water. The top joinery of both valleys when they meet on the same plane of roof is shown here. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

On top of that our pre formed metal product provides significant savings in installation time and labor. After the self adhering underlayment is installed across the valley a pre bent metal valley lining is installed. For example in metal roofing systems valleys are commonly fabricated with hems but can also be fabricated without them in which case they could still be used for metal roofing or any other type of roofing. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris.

This valley flashing material can be manufactured from any metal that will resist the effects of weather acid rain and other contaminants. The valley systems used for metal roofing should consider the design of the panels. The proximity of trees to the metal roofing installation determines how soon this happens. A roof valley is a channel created where a roof changes direction or angles.

One method of dealing with the special problems of metal valleys is the installation of valley flashing. I have my valley custom made with water trough to help with leaking. Usually a v or w shaped metal piece is placed in the valley to channel water off your roof. Galvanized steel aluminum and copper can all be used.

This process leaves large gaps where the panels enter the receiving channel. These spaces can later become clogged with debris such as tree leaves pine needles ice and snow. Avoid using anything that will melt the galvalume coating such as a chop saw torch or abrasive blade. Roof valleys are very important for a roofing system to work correctly and must be done right and taken care of to keep them in good condition.

When cutting your metal roofing to fit valleys it s important to use the proper tools. How to seal metal roof valley. These items can be fabricated in many different profiles. With a clean valley you can lay down some peel and stick roofing membrane.