Roof Material Takeoff from Measurements and Pitch

Turns your roof measurements and pitch into a clear material list with the math shown.

RooferHome Services and Trades✓ Checkedv1.0

Before and after

BEFORE · what the owner typed

takeoff for Cloverleigh Roofing. customer Alma Wagner, 5515 Blueleigh St, Grayford. Andre Yates measured it, ground and aerial. main house 2 planes, each 40 long by 15 run, 6/12. garage 2 planes each 22 by 11, 4/12. those are flat footprint numbers not sloped. gable roofs both, no hips or valleys. ridge runs full length on both. waste 10%. shingle is 3 bundles a square. ridge cap bundle does 20 lf. starter bundle does 100 lf. underlayment roll covers 10 squares. drip edge comes in 10 ft pieces, put it on eaves and rakes. 3 plumbing vents. customer phone for the office to call back is 312-555-0128

AFTER · what the skill produced

Roof Material Takeoff
Cloverleigh Roofing
Customer: Alma Wagner, 5515 Blueleigh St, Grayford
Measured by: Andre Yates (ground and aerial)
Office callback number: 312-555-0128

Measurements (flat footprint)

Main house: 2 planes, each 40 ft long x 15 ft run, pitch 6/12. Footprint 2 x 600 = 1,200 sq ft.
Garage: 2 planes, each 22 ft long x 11 ft run, pitch 4/12. Footprint 2 x 242 = 484 sq ft.

Slope factors

6/12: square root of (36 + 144) = 13.416, divided by 12 = 1.118
4/12: square root of (16 + 144) = 12.649, divided by 12 = 1.054

Roof surface area

Main house: 1,200 x 1.118 = 1,341.6 sq ft = 13.42 squares
Garage: 484 x 1.054 = 510.1 sq ft = 5.10 squares
Total: 1,851.7 sq ft = 18.52 squares

With 10% waste
1,851.7 x 1.10 = 2,036.9 sq ft = 20.37 squares

Material list

Shingles: 20.37 squares x 3 bundles = 61.1, so 62 bundles
Underlayment: 20.37 squares / 10 squares per roll = 2.04, so 3 rolls
Ridge cap: ridge 40 + 22 = 62 ft / 20 ft per bundle = 3.1, so 4 bundles
Starter: eaves (2 x 40) + (2 x 22) = 124 ft / 100 ft per bundle = 1.24, so 2 bundles
Drip edge:
- Eaves: 124 ft
- Rakes, main house: 4 edges x (15 x 1.118 = 16.77 ft) = 67.1 ft
- Rakes, garage: 4 edges x (11 x 1.054 = 11.59 ft) = 46.4 ft
- Total: 124 + 67.1 + 46.4 = 237.5 ft / 10 ft per piece = 23.75, so 24 pieces
Plumbing vents to flash: 3

Assumptions used

Measurements are flat footprint numbers, converted with the slope factors above
Waste of 10% applied to shingles and underlayment
Both roofs are plain gables with no hips or valleys
Rake edges are 4 per building, measured along the slope

Questions for the owner

How many layers are on the roof now, and is any tear-off disposal needed?
Do you want fasteners, sealant, or other accessories added to this list, and at what quantities?
Should the waste percentage also apply to ridge cap, starter, and drip edge? It was applied only to shingles and underlayment.
Is the decking condition known, or should this be checked on site before the order is placed?
Do you want prices added? Send me your unit costs and I will total them.

What it does

Turns your roof measurements and pitch into a clear material list with the math shown. It covers shingles, ridge cap, starter, underlayment, drip edge, and counted items like vent flashings, and it works for one plane or a roof with several sections.

Use it when: Use when a roofing contractor needs a material list from roof measurements and pitch, such as "do a takeoff," "how many bundles do I need," "figure the squares," or "material list from these measurements."