ROOF WASTE TOOL
Xactimate
Automatic Roof Waste Calculation Tool
Set
auto calculate roof waste as the default
Auto
calculate roof waste
Calculate
roof waste by a set percentage
Ordering shingles, based only on the area of a roof, makes it difficult
to accurately estimate enough material for the job. Several other factors
need to be considered in order to determine the additional material needed,
including the type of shingle, the shingle exposure, the type of valleys,
and whether the starter course is pre-fabricated or constructed with on-site
materials. For example, the slope or incline of a roof (the ratio of the
roof's vertical rise to its horizontal run) can become particularly important
in calculating waste.
The Roof Waste Calculation Tool takes the guesswork out of estimating
sketched roofs, and provides an accurate and consistent method for calculating
the amount of roofing material required for waste. Roof waste is automatically
calculated based on seven factors.
- The sketched roof model
- The material type (waste can be auto-calculated for wood shake,
wood shingle, composite, or laminated shingles)
- The valley type (for composite and laminated shingles)
- The starter course
- The amount of exposure
- Crew error/handling
- Bundle rounding
You can set Xactimate preferences to automatically calculate for roof
waste when relevant roofing material is added to the estimate.
- On the Control Center tab, click Preferences.
- In the Settings list, select Profile.
- In the navigation menu on the left, in the Sketch group, click
Document.
- In the Roof Defaults group, select the Auto
Calculate Roof Waste check box.
- Add a roof to the sketch, and add an applicable roofing item to
the estimate.
- On the Quick Entry pad, click the Item
Property Editor icon to open the Item Property Editor dialog
box.
- In the Waste list, select Auto
Calculate. This will be automatically selected if you
set Auto Calculate as the default in Preferences.
- In the Roof Material list, select your material (3 tab shingles,
laminated shingles, or wood shingles/shakes).
- In the Valley list, select the valley type for the roof.
- Open – roofing material
meets along the valley, but it is cut on both sides down the center
so that the material does not overlap. Used in metal
“W” applications, for example.
- Closed cut (half-laced)
– Roofing material from one side extends across the valley and
under the material along the opposing face, and material from
the other side is cut down the center of the valley.
- Woven (full-laced)
– Roofing material overlaps on alternating sides.
The Valley list will not display if the Roof Material
is wood, as wood shingles/shakes default to Open valley.
- In the Include starter course in the Auto calculation list, select
Yes to include enough waste
in the calculation to construct the starter course with on-site materials.
- In the Exposure list, select the amount of material to expose in
the starter course. The default for this setting is determined
by the material type, but can be changed as required.
- In the Bundles/SQ list, select the rounding factor for the bundle
is desired. Otherwise, select Do
Not Apply.
- The numbers in the Bundles/SQ list denote the upward rounding
factor of the bundle (1/3” – 1/8”).
- Add a roof to the sketch, and add an applicable roofing item to
the estimate.
- On the Quick Entry pad, click the Item
Property Editor icon to open the Item Property Editor
dialog box.
- In the Waste list, select the percentage of roof waste to apply.