Roofing

Flashing a Wood-Framed Chimney w/a Copper Cricket Cap

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Flashing a wood-framed chimney is like flashing a dormer, except there’s no roof behind it. Without protection, water can leak into the joint and rot your walls to direct uphill water away

How to Flash a Masonry Chimney Into a Metal Roof

A silent movie about flashing metal roofing into a brick chimney from UnionCorrugating.

Step Flashing 2 Brick: Its Complicated

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Flashing must extend all the way from the wall to the outside. Oh yeah, and it has to be watertight and eight people have to work on it...

 

Vapor Permeance: 7 Minutes of BS—Building Science w/a Beat

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Vapor barriers cause a lot more harm than good in many parts of North America. Understanding vapor barriers begins with knowing what it means to be one

Building Shade Before Building a House

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Equatorial sun changes the priorities in a construction sequence

 

Why a Cedar Roof Needs a Cold Roof System

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Use skip sheathing and a ventilation space to extend the life of the shingles

Roof Ventilation: 7 Minutes of BS

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This episode of 7 Minutes of BS was the MOST POPULAR EPISODE OF 2017! Enjoy your trip down memory lane. 

 

How Ice Dams Form, and How To Stop Them

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Four ways to prevent ice dams in three types of roof, for two climates in one video. Boom.

 

When Drip Edge Becomes A Double Agent

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The mission of water is to turn houses to mush. Some drip edge flashings may actually help water accomplish this mission.

How to Do a Drip Edge Installation on a Roof

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A look at types of drip edge flashing, how to cut it, and how to retrofit it to an existing roof.

Roof Flashing Guide: From Drip Edge to Valley Flashing

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Drip edge metal, valley flashing, dormer, chimney, and kickout flashing shed water away from the connections between roofs, walls, chimneys, and other building assemblies

Ice Dam Podcast: What, How, Why, and Prevention

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A big problem, for roofs in cold climates, but what causes it and how can you fix it?

 

Dormer Flashing Details in 4D

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Concentrate on the corners and think like water when overlapping the layers