Nail the dormer flashing to both the wall and the shingles. Make a 1 to 2-inch cut with tin snips at the bend in the first step flashing. Run a bead of sealant on the corner edge of the dormer ...

Step flashing prevents leaks at the base of a wall ... To get the old flashing out, you have to remove any shingles on top of it and pry the siding loose. Then you can fit new flashing under ...

Step chimney flashing is built from pre-milled 90-degree ... professionals are experienced at weaving the flashing units into the shingles for a waterproof installation. Poor chimney flashing ...

You just need to slide it under the shingles about 4 inches. Avoid the temptation or advice of neighbors to use a giant tarp to keep your house dry as you work.

Some roofs stop at a house wall. Metal flashing must be in place to direct water down the wall and away from the stopping point of the shingles. This “step’’ flashing may be behind wood ...

Image: Shutterstock/ Toa55 That thin metal edge under your roof shingles? It's not just there ... Just like the main flashing, step flashing seals the deal around dormers and roof-to-wall transitions.

Flashing always goes on top of the shingles where you can see the flashing, to allow water running down the wall and chimney to flow over the flashing, preventing leaks. Sometimes a roofer will ...