How to compare two roofing proposals

Dekoven Roofing

November 13, 2026

Two prices can cover different work. Compare the roof areas, removal, decking allowances, underlayment, flashing, ventilation and cleanup line by line.

Put both proposals side by side and mark any item that one covers and the other omits. Ask each estimator to explain the difference in writing so you can compare the scopes and understand which costs could change.

If you're comparing replacement options, ask Dekoven Roofing for a written estimate for your property.

Same price, different work

Two roofing proposals with similar totals can include very different scopes. Comparing them fairly means reading the line items, not just the bottom line.

Compare these items

  • Roof areas covered and whether all slopes are included.
  • Tear-off of existing layers or an overlay approach.
  • Decking: allowance, unit price or exclusion.
  • Underlayment type and where it is used.
  • Flashing: replaced or reused.
  • Ventilation and ridge details.
  • Cleanup, debris removal and magnet sweep.
  • Warranty terms and who provides them.

Make a side-by-side list

Write each item as a row and each proposal as a column. Gaps show up quickly. If a line is missing, ask whether it is included, excluded or simply unmentioned.

A roofer who answers these questions clearly is giving you information you will need later.

Then compare price

Once scopes match, price comparisons mean something. If they do not match, ask each roofer to price the same scope.

Frequently asked questions

Should I ask for revised proposals?

Yes, if scopes differ. Asking each roofer to price the same scope makes comparison fair.

What if one proposal is much lower?

Check what is missing before assuming it is a better deal.

How many proposals should I get?

Two or three is common. More can make comparison harder without adding much.

Related: Request a replacement estimate

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