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Call us: (240) 505-6652 Virginia, Maryland & DC Areas

skylight flashing1

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Leska Flashing details use European skills of creating pockets

and then hand seaming panels together with double locking

mechanical seam.

We don't use Z flashing, butyl caulk, and NEVER CUT out panels

around penetrations as we know those commercial details leak.

We had replace many leaking metal roofs installed by others. 

All roofs are most vaulnerable at penetrations. Mainly Metal

roofs as the panel is roof and flashing all at same time. 

Leska LLC flashing details are the only way to properly flash all

details on metal roofs in order to ensure worry free roof. 

Radiused angle flashing

Why is this better?

Leska's custom flashing is the perfect way to ensure that you don't end up with the problems that lax roofing practices could leave you with.

Many roofers will flash penetrations (chimneys, vents, dormers, etc.) by cutting ill-fitting sheets that are close to the size of your chimney and caulking them to make them water resistant.  The only problem here is that the only thing protecting your home is the quarter inch of caulk that the roofer pressed over the hole in the roof.  Once the caulk degrades, you'll have a pernicious pinhole (sometimes bigger) leak that will lead way to rust, rot, and freeze thaw damage.

When we do our flashing, each piece of flashing is folded as you would origami, so that there are no holes in the sheet.  With this method, not only do we not need caulk, but even without the caulk, there will not be any leaks!



rheinzink diagram2

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rheinzink image2

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Where are the Issues?

The images above and below point out some of the problems with most roof flashing, explain why they're a problems and the advantages of our flashing.

  • Z-Flashing -This is used as an easy way out for quick roofing practices.  As the diagrams above and below show, it's a piece of flashing reminicent to that of the letter Z.  This allows roofers to use nails to flash chimneys instead of folding the metal panels the way that they are meant to be.
  • Caulk - While it makes for a good quick fix in many applications, using it as the main line of defense at penetrations on your chimney is a mistake.  It'll last for a while under the harsh conditions on your roof, but will eventually break down, exposing the hole in your roof that it was originally applied to protect.
  • Unprotected penetrations - At the top corner of the Z flashing, there are pop rivets that connect the roof side Z flashing to the wall flashing. This will keep out water for the most part, but will lead to rust and larder damage in the future.
  • Butyl Tape -

More Weak points 1

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Certifications & Credentials


Why choose us ?

  • Fully Insured/Bonded
  • Family Owned & Operated


  • 3rd Generation Craftsmen
  • European Quality