Expert Verified Updated: March 2026

Pool Cover Patch Size Calculator

Calculate the required patch dimensions to safely repair tears in your winter or safety cover.

Quick Conclusion
A pool cover patch must extend at least 3 inches beyond the edge of the tear in all directions. For example, a 2-inch tear requires a minimum 8x8 inch patch. Always round patch corners to prevent peeling.

Technical Comparison

Tear Length Min Patch Size Total Area
1.0" Tear 7" x 7" 49 sq in
3.0" Tear 9" x 9" 81 sq in
6.0" Tear 12" x 12" 144 sq in

Actionable Steps

Pro-Tip

The "Weight Failure" Warning: Patching is for small tears and pinholes only. If a safety cover has a tear longer than 6 inches or a hole near a strap anchor, the structural integrity is compromised. A patch will not hold the weight of a person or pet in a fall. Replace the panel if anchor points are failing.

Get the Complete DIY Pool Maintenance Guide

Free PDF checklist including seasonal schedules, chemical balancing secrets, and maintenance tips.