Exterior stucco material estimator

Stucco Calculator

Estimate stucco bags, coat volume, lath rolls, waste, and rough material cost from wall area, openings, average coat thickness, bag yield, and lath coverage. Use it as an early exterior finish takeoff before checking the product system.

Units

Wall area (ft²)Openings to deduct (ft²)Average coat thickness (in)Waste / mixing loss (%)Stucco bag yield (ft³)Lath roll coverage (ft²)Cost per stucco bag ($)Cost per lath roll ($)

Stucco bags to buy

Coat volume

Lath rolls

Rough cost

Stucco systems are product and climate specific

This calculator estimates bags and lath only. Substrate, drainage, paper, lath fastening, control joints, coat sequence, curing, climate, code, and manufacturer instructions decide the real assembly.

Android App

Need stucco bag and lath roll estimates hands-free?

Use the Android app when you need voice input, offline use, material lists, or PDF export. Free, no ads, no accounts.

Get the Free App Free. Built for Android phones. Donations welcome.

Saved you a mistake? Support VibeCalc

Siding Calculator

Estimate exterior siding squares for an alternate finish.

House Wrap Calculator

Estimate weather barrier rolls before exterior finishes.

Paint Calculator

Estimate finish paint or coating after the wall area is known.

View all

Stucco bag formula

Net wall area = wall area - openings

Stucco ft³ = net area × coat thickness inches ÷ 12

Order volume = stucco volume × (1 + waste %)

Bags = order volume ÷ bag yield

Lath rolls = net area × (1 + waste %) ÷ lath roll coverage

Sample takeoff

An 800 ft² exterior wall with 80 ft² of openings, 3/8 in average coat thickness, 10% waste, and 0.6 ft³ yield per bag needs about 42 bags and six 150 ft² lath rolls.A 74 m² exterior wall with 7.4 m² of openings, 10 mm average coat thickness, 10% waste, and 0.017 m³ yield per bag needs about 44 bags and six 14 m² lath rolls.

Stucco Calculator FAQ

How do I calculate stucco bags?+

Subtract openings from wall area, multiply by average coat thickness, add waste, then divide by the yield per bag.Subtract openings from wall area, multiply by average coat thickness, add waste, then divide by the yield per bag.

Does this include lath?+

Yes, it includes a simple lath roll count from net wall area and roll coverage. Fasteners, paper, flashing, and control joints must be handled separately.Yes, it includes a simple lath roll count from net wall area and roll coverage. Fasteners, paper, flashing, and control joints must be handled separately.

Can this replace a stucco system spec?+

No. Stucco assemblies depend on substrate, climate, code, product data, and inspection requirements.No. Stucco assemblies depend on substrate, climate, code, product data, and inspection requirements.