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Click here to download a PDF version of this checklist.
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General Information:
It is important to establish some overall information about the dimensions of
your gable end, its elevation, the upwind exposure and the design wind speed at
your home.
* When we refer to "open approach" below, we mean: is there
a large open field upwind of this particular gable end (within plus or minus 45
degrees of perpendicular to the gable end)?
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What is the design wind speed at the site of your home? ________ mph. (You
can estimate from the map in the section on assessing risks or ask your
local building official.)
How many gable end wall sizes do you have? [ 1 ] [ 2 ] [ 3 ] [ >3 ]
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For each gable end size, measure the width of the wall below the triangle,
the height of the wall to the eaves and the height of the wall to the ridge.
Gable end size #1:
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Width of the rectangular wall below the triangle __________ feet
Height of the rectangular wall (to the eaves) _____________ feet
Height of the ridge _____________ feet
Height of the Gable End = (height of ridge - height of eave) = _____________ feet
Length roof overhangs the gable wall _____________ inches
Does the wind have an open* approach to the gable end? [ ] Yes [ ] No
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Gable end size #2:
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Width of the rectangular wall below the triangle __________ feet
Height of the rectangular wall (to the eaves) _____________ feet
Height of the ridge _____________ feet
Height of the Gable End = (height of ridge - height of eave) = _____________ feet
Length roof overhangs the gable wall _____________ inches
Does the wind have an open* approach to the gable end? [ ] Yes [ ] No
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Gable end size #3:
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Width of the rectangular wall below the triangle __________ feet
Height of the rectangular wall (to the eaves) _____________ feet
Height of the ridge _____________ feet
Height of the Gable End = (height of ridge - height of eave) = _____________ feet
Length roof overhangs the gable wall _____________ inches
Does the wind have an open* approach to the gable end? [ ] Yes [ ] No
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Inspection:
Determine the following from the information above and from an inspection in your attic. Take a flashlight and tape measure with you and using a digital camera to take pictures would give you a reference for planning possible retrofits.
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[ ] Yes |
[ ] No |
Are any of the gable end walls 4-feet tall or taller?
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[ ] Yes |
[ ] No |
Is there an outrigger system at the gable end? (See the sketch below - with outriggers, the gable end truss or rafters is lowered and 2x? members are cantilevered out over the gable end truss or rafters to support the roof overhang.)
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[ ] Yes |
[ ] No |
If there is a outrigger system, are the gaps between the outriggers open to allow airflow? Can you see light between the outriggers on a bright day?
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[ ] Yes |
[ ] No |
Does the gable end wall framing in the triangular area run vertically?
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[ ] Yes |
[ ] No |
Is the gable end wall framing just the truss framing members? Does the gable end truss look just like all the other trusses?
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[ ] Yes |
[ ] No |
Are the wall framing members oriented perpendicular to the gable wall (narrow face against the wall)?
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[ ] Yes |
[ ] No |
Is there any sign of metal connectors tying the bottom of the truss or the ceiling joist with the gable wall framing to the top of the wall below?
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[ ] Yes |
[ ] No |
Are there any 8' long 2x4's or 2x6's running perpendicular to the gable end wall at about 4' spacing on top of the bottom chords of the trusses or on top of the ceiling joists? Attached with two nails or screws to each truss or joist?
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[ ] Yes |
[ ] No |
Are there any 8' long 2x4's or 2x6's running perpendicular to the gable end wall at about 4' spacing on the bottom of the top chords of the trusses or on the bottom of the rafters? Attached with two nails or screws to each truss or rafter?
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[ ] Yes |
[ ] No |
Are there any diagonal braces running between the ceiling joists or truss bottom chords to the top of the gable end?
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[ ] Yes |
[ ] No |
Are there any diagonal braces running between the tops of the trusses or rafters to the bottom of the gable end?
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Back to Gable End Walls
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