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Roof Structure

  • Modifying Roof Trusses

    My client wants to add a 16-inch-wide 4-inch-deep tray ceiling in a room where the drywall ceiling is attached to the bottom chord of roof trusses. To do this, I'd have to cut out and raise the bottom chords of the trusses. Is that possible?

     
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    Strengthening Roof-to-Wall Connections

    New Florida codes compel contractors to upgrade the roof-wall connections on qualifying older homes when replacing the roof covering. In this article Richard Reynolds, who helped write the new code language, outlines the steps involved: how to inspect the connections that tie existing rafters or...

     
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    Rafter Ties and Shallow-Pitch Roofs

    Q. My clients have a garage with a conventionally framed 4/12 roof that they want to convert to living space. They like the idea of a vaulted ceiling but not the expense of the new structural ridge it would require. As a compromise, can I replace the existing ceiling joists with rafter ties?

     
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    A Roof Full of Windows

    Precise framing, peel-and-stick membrane, and metal flashings ensure a leakproof job.

     
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    Dressing Up a Truss Roof

    Rafter tails and gable overhangs transform an otherwise plain-looking exterior.

     
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    Building a SIPs Roof

    Complex roofs with hips and dormers can be assembled quickly using these energy-efficient panels.

     
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    Framing a Dutch Gable

    This method uses calculations and layout shortcuts to speed production.

     
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    Design: Making Gambrels Work

    Making Gambrels Work

     
  • Letters

    Unnecessary roof venting; dangers of thin plywood paneling; no freebies; more

     
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    Sizing the Birdsmouth

    Q: When laying out the seat and heel cuts on a rafter, how large should the notch be?

     
  • 2006 JLC Index

    Our annual listing of features and departments.

     
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    Securing Soffits

    The eaves of a home can expose the structure to the ravages of wind-driven rain on two fronts: when soffits are blown out during a storm, and when winds of 90 mph or greater drive water through vented soffits. Effective December 2006, the Florida Building Code requires soffit systems to be able to...

     
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    The Biggest Thing to Hit Town in 74 Million Years

    About 80 miles northwest of Des Moines, Iowa, lies the small town of Manson. Nothing much has ever happened there, unless you count the time 74 million years ago when a giant meteor crashed nearby. Actually, calling it "giant" doesn't do it justice: The meteor was 1 1/2 miles across, weighed 10...

     
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    Toolbox

    Hitachi NR90AE round-head framing nailer; roofing tools; truck racks & boxes

     
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    On the Job

    Roof-pitch jig; lumber-hanging trick; skyhooked

     
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    Framing a Hipped Tray Ceiling

    With this method, all you need to calculate is the length of the hip and the run of a common.

     
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    Products

    Synthetic roof underlayments; deck railings; fireplaces

     
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    Adding Timber Rafter Tails To a Stick-Framed Roof

    A good plan and shop-made parts simplify this classy detail.

     
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    Framing a Barrel-Vault Ceiling

    To simplify the layout, think in terms of a hip roof.

     
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    Installing Curved Exterior Trim

    Accurate framing and full-size millwork templates guaranteed a precise fit.