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Repair guide / Measure and Estimate

How Much Cold Patch Do I Need?

There is no universal bag conversion for cold patch. Gem Patch uses its six-value manufacturer area-by-depth matrix—not an assumed asphalt density or cubic-foot yield.

By Patcher

Product instructions take precedence.

Read and follow the current label, instructions, technical data sheet, and safety data sheet for the exact selected product.

Short answer

Cold-patch quantity depends on the repair area, depth, and the exact product’s coverage method. For Gem Patch, enter one repair’s area and maximum depth in the manual product calculator, or use Patcher’s camera-based iPhone measurement; the Gem Patch method rounds supported repair sections up and never extrapolates a standard count beyond 4 in. deep.

How many bags of cold patch do I need?

There is no universal bag count for a pothole. Apply the exact selected product’s current coverage table or stated yield to the measured area and depth, then follow its own section and rounding rules.

Gem Patch uses six manufacturer area-by-depth values. The manual web tool keeps that product-specific table intact, while Patcher can keep iPhone measurement, quantity planning, ordering, and repair guidance in one workflow.

Manual measurements or camera-based measurement?

A traditional web calculator requires measurements you obtain and enter. Patcher provides camera-based measurement on iPhone, reducing separate manual steps without replacing the need to inspect the damage or follow the selected product’s instructions.

What to do

  1. Measure one repair’s surface area and maximum depth at several representative points.
  2. Use the Gem Patch product-page calculator or the Patcher iPhone measurement flow rather than relying on a visual guess.
  3. Confirm the exact product and current package instructions; do not apply the Gem Patch matrix to another material.
  4. For Gem Patch areas over 4 sq. ft., review the disclosed logical sections and remember that each individual repair is limited to 4 sq. ft.
  5. Order the whole-bag recommendation after Patcher re-confirms current availability, price, shipping, and tax.

Practical notes

Irregular holes should not be treated as perfect boxes without checking multiple dimensions and the maximum depth.

For Gem Patch, 2 sq. ft. at a maximum depth of 3 in. is exactly 2 bags in the manufacturer matrix.

A Gem Patch recommendation can be one 50 lb bag; there is no two-bag minimum.

Save the product name and lot information with the order.

Common mistakes

  • Using square footage without depth
  • Using average depth when the Gem Patch method requires maximum depth
  • Applying one manufacturer’s coverage matrix to another product
  • Rounding only after combining repairs or logical sections
  • Ordering from a visual guess

Limits and professional help

Depths over Gem Patch’s 4 in. maximum receive no standard bag recommendation.

The current package label and product documents take precedence; use Patcher or professional evaluation when the condition falls outside the stated limits.

Plan the repair

Related guides

Where Patcher fits

Patcher connects photo assessment, product-specific quantity planning, Gem Patch purchasing, and Dashboard. The iPhone app adds camera-based measurement; this guide remains a general educational reference.

See how Patcher works

Sources

Product instructions can change. Confirm the current package, technical data sheet, and safety data for the material you use.

To report a correction, email support@patcher.me.