Building Science Fundamentals: Roof, Part 1: Ventilation
By Dr. Joseph Lstiburek
Dr. Joseph Lstiburek talks about the not-so-controversial ways to maximize the efficiency and airflow of your roof and attic.
People who looked at this item also looked at…
Related items
Popularity: 7% [?]
Tweet This
In our last episode, Dr. John talked about How Heat Moves Through Homes and why radiant barriers work better in outer space than on earth.
In this episode, Dr. John talks about the history of insulation, how different materials work, and where they make sense.
TRANSCRIPT
The history of insulation comes about because of the history of structural engineering. Now, I’m a recovering structural engineer, which is probably why I like to think of it that way.
People who looked at this item also looked at…
Related items
Popularity: 6% [?]
Tweet This
Today’s walls, roofs, and floors are better insulated, tighter, and made with a much greater variety of components than they used to be, making them a lot more susceptible to moisture problems when they get wet. Compared to the old days, today’s walls and ceilings are more complicated and can be very slow to dry.
People who looked at this item also looked at…
Related items
Popularity: 4% [?]
Tweet This
The weathering of wood is very different from decay; weathering is breakdown at the surface only. While there are a number of forces that contribute to weathering of wood—moisture, temperature, abrasion by wind-borne particles, air pollution—it’s the narrow band of high-energy ultraviolet light in sunlight that is the dominant force (see Image #1).
What bare wood looks like when cut or milled
People who looked at this item also looked at…
Related items
Popularity: 3% [?]
Tweet This
This podcast series is excerpted from a two-day class called “Building Science Fundamentals” taught by Dr. Joe Lstiburek and Dr. John Straube of Building Science Corporation.
People who looked at this item also looked at…
Related items
Popularity: 10% [?]
Tweet This
This podcast series is excerpted from a two-day class called “Building Science Fundamentals” taught by Dr. Joe Lstiburek and Dr. John Straube of Building Science Corporation.
People who looked at this item also looked at…
Related items
Popularity: 12% [?]
Tweet This
This podcast series is excerpted from a two-day class called “Building Science Fundamentals” taught by Dr. Joe Lstiburek and Dr. John Straube, of Building Science Corporation.
People who looked at this item also looked at…
Related items
Popularity: 5% [?]
Tweet This
As part of a new Master Certified Green Professional designation, NAHB worked with GreenBuildingAdvisor to develop a rigorous training course covering green home building, full of building science and quality construction details. This course premiered at the International Builders Show in Las Vegas just last week.
People who looked at this item also looked at…
Related items
Popularity: 4% [?]
Tweet This
Our latest Question of the Week comes from a homeowner in New Jersey. Monica is uncertain of the best way to insulate the roof of a new second-story addition on her Cape Cod home. She wonders whether it’s wise to insulate directly under the roof sheathingMaterial, usually plywood or oriented strand board (OSB), but sometimes wooden boards, installed on the exterior of wall studs, rafters, or roof trusses; siding or roofing installed on the sheathing—sometimes over strapping to create a rainscreen.
— especially since the mounting system for her photovoltaic(PV) Generation of electricity directly from sunlight. A photovoltaic cell has no moving parts; electrons are energized by sunlight and result in current flow. array requires 54 holes to be drilled in her asphalt shingle roof.
People who looked at this item also looked at…
Related items
Popularity: 9% [?]
Tweet This
Powerful kitchen exhaust fans do a good job of removing cooking odors and smoke. They also have the potential to depressurize a house, causing water heaters to backdraft and pulling ashes out of the fireplace and onto the hearth.
People who looked at this item also looked at…
Related items
Popularity: 6% [?]
Tweet This
