METAL ROOFING - Chimney Counter Flashing

http://www.coolflatroof.com/flat-roofing-blog/metal-roofing-attleboro-ma/ - This video demonstrates the process of cutting a grove in a masonry chimney with a grinder and diamond blade. This is done to later install a counter flashing.

This roof is a Tamko Metal Works Steel Shingles in Aston Wood profile, with custom chimney flashing and counter flashing.

Category:

Howto & Style

Tags:

• metal roof
• metal roofing
• how to install metal roof
• chimney flashing
• roof chimney
• how to flash a chimney
• standing seam
• metal shingles
• coolflatroof
• newenglandmetalroof
• ibsolarwise
• tamko metal works
• chimney counter flashing

[blankthree]

does cutting into the brick weaken it or lets water in to cause freeze damage?

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[coolflatroof]

@blankthree - I do not see how it can weaken the entire chimney, since the weakest point is the mortar in the brick joints. The cut is only 3/4" deep, and does not decrease the brick's or chimney's integrity.

As far as moisture - brick is porous by itself, so if it absorbs moisture, it will do so without the help of the reglet (cut). Ofter the chimney is flashed and counter-flashing is installed, we insert shims to hold the counter-flashing in place and seal/waterproof cut with SolarSeal 900.

[dekonfrost7]

@blankthree yes you never ever cut the bricks...EVER....cool flat roof says he doesnt see how..well ever see how glass or tile is cut? it's a superficial scratch and the pressure cuts the piece, a brick is no different...

[pinarello68]

ok... and?