Planning a Siding Replacement

Measuring walls, permits, tear-off, and what happens when rot shows up — how a re-side really goes. Below are the Ballpark Lab guides in this topic — each one pairs plain-English answers with the calculator that gives you the number.

How it works

How to Measure Siding: Square Footage & Siding Squares

Measure siding by wall area: perimeter × wall height, plus gable triangles, minus openings — then divide by 100 for squares and add 10–15% waste.

Updated July 6, 2026

How it works

How Siding Is Replaced: Tear-Off, Rot & Install

A re-side is tear-off, a sheathing rot check, new house wrap and flashing, then install — here's what the crew does and the change-orders to watch.

Updated July 6, 2026