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Weather resistant barrier is wrapped over the edge from roof to wall sheathing to provide a continuous air barrier at this transition.

Weather resistant barrier is wrapped over the edge from roof to wall sheathing to provide a continuous air barrier at this transition.
Video:

What is Roof Flashing & How to Install it

Video:

What Type of Connection is Critical in Creating a Continuous Path Differing Loads?

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When correctly installed, drip edge flashing directs rainwater into the gutter.

When correctly installed, drip edge flashing directs rainwater into the gutter.
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When installing fasteners in roof sheathing, common mistakes include using the wrong size fasteners, missing the framing members, overdriving nails, and using too many or too few fasteners.

When installing fasteners in roof sheathing, common mistakes include using the wrong size fasteners, missing the framing members, overdriving nails, and using too many or too few fasteners.
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Where the optimal tilt angle for PV panels is 30°, if the roof is facing due south, the tilt angle (roof pitch) can vary 0° to 60° or roof direction can vary up to 65° to east or west and the roof can still collect 90% to 100% of available solar energy.

Where the optimal tilt angle for PV panels is 30°, if the roof is facing due south, the tilt angle (roof pitch) can vary 0° to 60° or roof direction can vary up to 65° to east or west and the roof can still collect 90% to 100% of available solar energy.
Video:

Which roof shape best stands up to the fiercest gale?

Video:

Why A Sealed FORTIFIED Roof

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Wildfire: Prevent Home Ignition P.1

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Wildfire: Prevent Home Ignition P.2

Video:

Wildfire! Preventing Home Ignitions

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Wind path and uplift force for a gabled roof, a hip roof, and a pyramidal (another variant of a hip) roof design

Wind path and uplift force for a gabled roof, a hip roof, and a pyramidal (another variant of a hip) roof design
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Wind path and uplift force for gable ended roof, hip roof, and pyramidal (another variant of a hip) roofs

Wind path and uplift force for gable ended roof, hip roof, and pyramidal (another variant of a hip) roofs
Video:

Wind Resistant Roof Systems

Video:

Wind Resistant Roof Types

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Wind uplift pressures on gable end overhang with ladder framing

Wind uplift pressures on gable end overhang with ladder framing
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Wind-Damage Reduction as a Function of Retrofit Level

Wind-Damage Reduction as a Function of Retrofit Level
CAD File:

Window head at window frame wall

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Window head at window frame wall
CAD File:

Window head at wood frame wall

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Window head at wood frame wall
CAD File:

Window sill at wood frame wall

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Window sill at wood frame wall
CAD File:

Window sill at wood frame wall

Preview Image
Window sill at wood frame wall
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With the nailed block method, wood blocks are attached to the sill plate and the cripple wall plywood is attached to the block to provide shear strength for correctly bracing a cripple wall in a seismic retrofit

With the nailed block method, wood blocks are attached to the sill plate and the cripple wall plywood is attached to the block to provide shear strength for correctly bracing a cripple wall in a seismic retrofit
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Wood blocking for future PV panel installation is installed in the layers of polyisocyanurate rigid foam insulation during a flat roof retrofit

Wood blocking for future PV panel installation is installed in the layers of polyisocyanurate rigid foam insulation during a flat roof retrofit
Video:

World's Whitest Paint: radiative cooling helps to fight climate change