Exterior Cladding Calculator

Panel count and material from building envelope area.

Building length (ft)

Building width (ft)

Floor-to-floor height (ft)

Number of stories

Window-to-wall ratio (%)

Panel width (ft)

Panel height (ft)

Waste allowance (%)

Tab to move between fields

Gross facade area (sq ft)

11,520

Panels to order

278

Net cladding area (sq ft)8,064

Panels (net)252

Joint sealant (LF)4,480

How to Use This Calculator

Enter Building Length, Width, Floor-to-Floor Height, and Number of Stories.
Set Window-to-Wall Ratio (%) to reflect the percentage of facade occupied by glazing.
Enter Panel Width and Panel Height to match your chosen cladding product.
Set Waste Allowance (%) — 10% is typical for standard panels; add more for complex shapes.
Read Gross Facade Area, Net Cladding Area, Panels to Order, and Joint Sealant (LF) for procurement.

How the result changes with Floor-to-floor height (ft)

Building length (ft): Overall building length along the longest facade.
Building width (ft): Overall building width (shorter side).
Floor-to-floor height (ft): Typical floor-to-floor height per story.
Number of stories: Total number of above-grade stories with cladding.
Window-to-wall ratio (%): Percentage of facade occupied by windows and doors.
Panel width (ft): Width of each cladding panel.
Panel height (ft): Height of each cladding panel.
Waste allowance (%): Extra material for cuts, damage, and corners.

Gross facade area (sq ft): Total exterior wall area before openings.
Net cladding area (sq ft): Wall area requiring cladding (openings subtracted).
Panels (net): Minimum panels needed without waste.
Panels to order: Panels including waste allowance.
Joint sealant (LF): Linear feet of sealant joints (horizontal + vertical).

Identify Input Parameters
4 parameters
Building length (ft) = 100, Building width (ft) = 60, Floor-to-floor height (ft) = 12, Number of stories = 3 = 8 input(s) provided
Calculate Gross facade area
Gross facade area = perimeter * totalHeight
11520 = 11520
Calculate Panels to order
Panels to order = ceil(panelsNeeded * (1 + wastePct / 100))
278 = 278
Calculate Net cladding area
Net cladding area = grossFacadeArea - openingArea
8064 = 8064
Calculate Panels
Panels = ceil(netCladdingArea / panelArea)
252 = 252