Exterior Caulk Calculator

Enter your window and door counts, joint lengths, and bead dimensions to estimate how many tubes of sealant you need with cost comparison across types.

Openings

Windows (~16 ft perimeter ea.)

Doors (~18 ft perimeter ea.)

Joint Lengths

Siding Joints (linear ft)

Trim Joints (linear ft)

Bead Dimensions

Joint Width (in)

Joint Depth (in)

Waste %

Pricing per Tube (edit to match local rates)

Acrylic Latex ($/tube)

Silicone ($/tube)

Polyurethane ($/tube)

Hybrid ($/tube)

Total Linear Feet

310 ft

282 ft + 10% waste

Bead Volume

232.7 cu in

0.25" W x 0.25" D bead

Tubes Needed

standard 10.3 oz tubes

Cheapest Option

$58.50

Acrylic Latex

Purchase Option	Quantity	Est. Cost
Acrylic LatexBest value	13 tubes	$58.50
Silicone	13 tubes	$91.00
Polyurethane	13 tubes	$110.50
Hybrid (Silicone-Modified)	13 tubes	$123.50

Cheapest sealant: Acrylic Latex at $58.50Acrylic latex is paintable and easiest to apply but has the shortest lifespan (5-10 years). Silicone offers excellent flexibility and waterproofing (20+ years) but is not paintable. Polyurethane is the most durable for high-movement joints. Hybrid sealants combine silicone flexibility with paintability.

Consider silicone for high-exposure areasFor a project this size, using silicone or hybrid sealant on areas with the most water exposure (windows, door thresholds) can extend the time before re-caulking is needed, even if acrylic latex is used for the remaining joints.

This is a material estimate only. Actual tube coverage varies with application technique, joint irregularities, and temperature. Always buy a few extra tubes to avoid mid-project shortages.