Rusty Roof Valleys

The flashing in the valleys of your roof depends on a smooth surface for rain to wash debris off your roof.

Rusty roof valleys.

Stop nailing 6 inches from the center. A popular trend that has been occurring in mountain retreats and ranch style homes a corten roof offers a unique appeal to many homeowners. Fold the top over the roof ridge and cut the bottom along the drip edge metal. They can last for more than 20 years but external factors can considerably shorten that period.

A rusty valley on a tile roof which needs to be replaced typically where a valley is located on a roof roof valley replacements are fairly common especially on tiled roofs. The copper roof valley shown above cracked and leaked from thermal movement. In more rustic styled designs we see it used more with corrugated metal panels. To clean and refinish a roof valley.

Even badly rusted flashing can be renewed if it s caught early enough. However roofing felt s waterproofing ability is ruined the moment the asphalt shingles cedar slate tile etc. Roof one side of the valley running the shingles across it. Shingle the other side of the valley the same way.

The internal angle formed by the intersection of two sloping roof planes to provide water runoff. With a clean valley you can lay down some peel and stick roofing membrane. If not maintained properly roof valleys can become clogged with leaves and other debris which can cause the metal to rust and the roof to leak. Lifespan of roof valleys is relatively long.

The valleys on many older houses comprise layers of roofing paper which can deteriorate over time. Wet leafs stick to the valley and corrosion leads to formation of rust bubbles. Roof valleys are troughs that discard runoff water where two sections of sloped roof meet. Severely rusted flashing may warp curl or even develop holes exposing your home to the possibility of damaging leaks.

First clean the debris out of the valley including sawdust nails and whatever else is in there. This is because the old valleys used to be galvanised and they start corroding with time especially if they trap leaves. Believe it or not one of the most common causes for roof leakage is leafs. Rusty flashing is more than just an eyesore.

Use a broom to sweep off the leaves and other debris. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. In modern metal roofing applications the trend tends to be using a weathering steel on a standing seam roofing panel. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

You can see that repairs were attempted using a black asphalt based flashing cement.