Inexpensive Home Building

Cut through the jargon and nonsense of home building and house construction by starting from zero dollars and trying to figure best-value bang-for-your-buck when choosing construction methods or construction materials. My research might answer some of your questions and at other times perhaps you have the knowledge or experience to post the answers to my questions and thereby help others too. The goal is an affordable and sustainable home for all.

Wednesday, April 18, 2007

What is a Fly Roof? How To Build a Flying Roof

Part of: "Best Ways To Cool Your Home."

A fly roof (or flying roof) functions as a parasol by blocking sun or other weather without trapping heated air in or against the main structure.

Another function is to vent the interior of the structure, such as a fly roof over industrial "smoke stacks" or the more familiar chimney cap (rain cap) on residential homes. A fly roof is like a chimney cap over the entire house.

The fly roof can use heat convection, solar chimney effects, stack effects, venturi effects, and evaporative cooling (e.g. swamp cooler, a.k.a. desert cooler) as part of an air-conditioning system.

You can get a partial effect by installing radiant barriers under the roof, insulating below the attic floor, and installing attic vents. Imagine if the entire attic walls were vents or screens.

A "double roof" essentially uses a fly roof, sometimes to create ducting between parallel roofs.

A Fly roof can be permanent or temporary (seasonal), rigid or flexible, parallel to an underlying roof or not parallel. You can make the fly roof a “carport” over the house, a tarp suspended over the main structure, or a retractable "window shade."

Here are some fly roofs and a retractable roof:

Ancient Egyptian fly-roof air-conditioner in 2600 BC Egypt (Cheops 1 ship used a wet canvas over the wooden frame to create solar-heat-powered evaporative cooling):

Huge suspension-cable flying roof in Lisbon, Portugal:

Carport-style self-supporting fly roof near Newcastle, Australia:

Large chimney cap in Massachusetts, USA:

Stainless steel chimney cap:

Copper chimney cap:

Masonry chimney cap:

Flying roof framing:

Retractable wheeled roof for an observatory:


At 9:12 AM, Anonymous Alexander said...

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At 5:29 AM, Blogger Sarah said...

Those images are really awesome. Nice images. Thanks for sharing the information on Roofing. I have roofed my house through one of the best roofing services provider in OK. The Roofing company providing such a excellent services with good quality products.

At 4:39 AM, Anonymous RV Roof Repair said...

It is for the first time I have heard about Flying Roof? Can you explain it to me that what does it mean by flying roof?

At 10:20 PM, Anonymous Double Glazing said...

I appreciated the quality of image and the exact image of flying roof use in the blog. Thank you for the information that fly roof may bring some advantage that I don’t know yet.

At 2:26 AM, Blogger Madhu said...

All images are awesome.Thanks for sharing so beautiful pictures and roofing information.

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At 2:30 AM, Blogger Kyle said...

Oh, so that's a fly roof. The Washington D.C. general contractors I've hired have mentioned this to me the other day. They were telling me that having a little fly roof or that chimney cap on our chimney, to minimize the amount of foreign objects going in through our chimney. Thanks for sharing!

At 4:31 AM, Anonymous Liquid Roof said...

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At 7:26 AM, Blogger Sam Gerrard said...

This is really good stuff. I read this post and it is very helpful for me and giving me a lot of ideas about the choosing right roofing materials. Thanks for blogging this informative article. Keep blogging.

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At 11:01 AM, Blogger Flip Jork said...

Trey started on the ground clean up crew with fellow pals Andy Peterson and Alex Hannemann and has almost made his way to the roof as a shingler.Ian

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