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Starter Slate Size Chart

Start your slate roof off correctly with the proper starter slate size laid horizontally with the bevel edge down.

For more information on starter slates and eave installation details visit https://www.ncslate.com/installation-guide-videos/eave-gable-cant-details/

STARTER SLATE CHART
Field slate Starter slate
24″ x 12″ 12″ x 12″ or 14″ x 12″
22″ x 12″ 13″ x 12″
22″ x 11″ 13″ x 11″
20″ x 12″ 12″ x 12″ or 24″ x 12″
20″ x 11″ 12″ x 11″ or 22″ x 12″
20″ x 10″ 20″ x 12″
18″ x 12″ 12″ x 11″ or 24″ x 11″
18″ x 11″ 22″ x 11″
18″ x 10″ 20″ x 11″
18″ x 9″ 18″ x 11″
16″ x 12″ 12″ x 10″
16″ x 10″ 20″ x 10″
16″ x 8″ 16″ x 10″

*This chart correlates to slates being installed at a standard 3″ headlap*

Starter course slates are installed horizontally (long sides parallel to the eave) with the bevel edge down.

Starter Length: Field slate exposure plus headlap, rounded up to the nearest inch.

Starter Width: Double the field slate width.

Example:
18″ x 10″ (Field Slate)
7.5″ Exposure + 3″ Headlap = 10.5″ (round up to 11″)
10″ Wide Field Slate x 2 = 20″
Starter slate would be 20″ x 11″ (20” parallel to the eave)

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