REDROOFED

How Roof Scores Are Calculated

Last updated: June 7, 2026

We believe in showing our work. Here is exactly what data goes into a Red Roofed score, and where every piece of it comes from. If an input isn't listed on this page, it isn't in the score.

Red Roofed is a private data service, not a government agency. A score is an estimate built from public records and documented storm history. It is not an inspection result unless the property is marked Verified (see Inspections below). Only a licensed on-site inspection can determine a roof's actual condition.

The Roof Score & Status

Every property is classified by its roof age and roofing material into a Roof Score from 0 to 100 and one of three statuses. The score is a scaled representation of how far the roof is through its material's expected service life — the number and the status come from the same model, so they always agree:

StatusScoreWhen it appliesMeaning
CLEAR80–100Comfortably within the material's service lifeRecently replaced, verified sound, or still well within expected life
FURTHER REVIEW50–79Within ~5 years of the replacement windowAging — worth a closer look
FAIL0–49At or past the material's expected service lifeHigh likelihood of needing replacement

The age at which a roof is flagged Fail depends on its material: about 15 years for asphalt shingle, 22 for tile, and 38 for metal. Further Review covers the five years before that. Within each band, the score falls linearly as the roof ages — a brand-new roof scores near 100, a roof at its threshold scores in the 40s, and the score keeps declining the further past the threshold it gets. A finalized re-roof permit or a verified inspection resets the clock (see below).

What Goes Into the Status

The displayed status is set by roof age (items 1, 5, 6 below) measured against the material's expected service life (item 2). Storm history (items 3–4) adds context and informs how we prioritize outreach, but does not by itself change a Clear / Further Review / Fail status.

1. Roof Age

The primary factor. We estimate roof age from the property's year built (or the most recent re-roof permit / inspection, if newer) and compare it to the expected service life of its roofing material.

Source: Florida Department of Revenue property tax rolls (public record, Florida Ch. 119).

2. Roof Material & Construction

Construction type indicates the likely roof material, which sets the expected service life — asphalt shingle (15–20 years), concrete tile (22–30 years), metal (38–50 years). We flag a roof for review/replacement at the start of that window, not only at the absolute maximum.

Source: Florida Department of Revenue construction-class records.

3. Storm Exposure — NOAA Hurricane Data

Each property's county is matched to its documented hurricane history. A county repeatedly hit by hurricanes carries more baseline roof-wear exposure than an inland county that has never taken a hurricane-force strike.

Source: NOAA National Hurricane Center (NHC) Tropical Cyclone Reports — documented peak sustained winds by county for every major Florida hurricane, 2004–2024.

4. Hurricanes Endured

We count the hurricanes that struck the property's county since the roof was installed — the storms the current roof has actually weathered, weighted by intensity. A 2003 roof in Sarasota has been through Charley, Irma, Ian, Helene, and Milton; a 2023 roof has only seen Milton.

Source: NOAA/NHC storm record (same as above).

5. Permit History

A property with a finalized roof-replacement permit on file is moved to CLEAR — the roof was recently replaced, so it is no longer a replacement candidate. This is the un-gameable, government-record-based clearing mechanic, and it self-corrects false positives.

Source: County building-permit records obtained via Florida Ch. 119 public-records requests.

6. Verified Inspections

When a licensed Red Roofed Verified Contractor physically inspects a roof and submits a finding, that finding overrides the estimate — a real person looked at the roof. The property is then flagged Verified. Inspections correct false positives and confirm true ones, and make our data more accurate over time than any pure-records guess.

Source: On-site inspections by licensed Red Roofed Verified Contractors.

What Is Not in the Score or Status

To be clear about our limits, the score and status do not currently use:

Your free report may include a satellite view and an automated review of that imagery — those are provided for information only and never set or change the score or status.

Accuracy & Honesty

This is a screening and ranking tool, not a guarantee. Year built is a proxy for roof age and is wrong wherever a roof was replaced without a permit on file — which is exactly why permits and inspections exist in the model, to correct those cases. A Fail status is a flag worth checking, not a verdict. A meaningful share of properties are flagged Fail — a screening rate, not a claim that those roofs are failing today.

Bottom line: Use a Red Roofed status to decide whether a roof is worth a closer look. Then get a free, licensed inspection to find out for sure.