STEP 2 -
From the selection below; select your unit of measurement
Inches Feet Centimeters Meters

STEP 3 -
Type in your overall height - More Info

STEP 4 - Select the roof pitch - More Info
Not Applicable0/12 to 6/126/12 to 12/12Flat Roof 1/12 Peaked Roof 3/12 to 6/12Peaked Roof 7/12 to 9/12

STEP 5 -

Bypass step 5 as offset is not relevent to your cathedral ceiling installation.

STEP 6 -
Go to your material list