Dr. Armor

What happens if my roof scores below 21?

Last updated October 28, 2026

Short answer

Below 21 the roof is in the Replace band (0-20). The published table carries one answer there: the Boost bridge, 3 years on a fully prorated basis, at $1.10 per square foot. It is a short-term answer, and the conversation alongside it is about planning a replacement.

What the band means

The Replace band is not a judgement about the house. It is a description of a shingle surface that has lost most of what made it work: the granules are largely gone, the material is brittle, and water is no longer leaving the roof the way it should.

At that point a treatment is not being sold as a way to keep the roof for another decade. What is on offer is time, and the table is explicit about how much.

The one row that exists

The Boost bridge is 3 years, one coat, prorated, at a maximum warranty value of $1.10 per square foot. Prorated means the cover reduces from year one rather than staying at full value across the term.

We describe it as a bridge because that is what it is: a hydrophobic coat that buys time on a roof too worn for a full treatment, so a replacement can be planned rather than paid for in a hurry. It is honest about what it does, and about what it does not.

Why a replacement is the honest answer

A treatment protects a surface that is still working. Below 21 the surface has largely stopped working, so no amount of coating changes the underlying arithmetic: the roof is at the end of its service life and the house needs a new one.

We would rather say that at the assessment than take money for a treatment that cannot hold. If the roof is also leaking, that is a repair conversation first, and if the leak points back to the roof being finished, replacement is the answer.

What still gets measured

A roof in this band still gets the same free assessment, and the same written estimate. If there are repairs worth doing while the roof is being lived under, they are listed separately with their own scope rather than folded into a treatment price.

And if you decide to replace instead, you lose nothing by having asked. The assessment costs nothing and carries no obligation.

What we will not do in this band

Sell a treatment as though the roof had years of full cover left in it. Below 21 the numbers do not support that, and the row that exists says so plainly.

Estimate where your roof sits

Two answers give an estimated zone and the coverage that comes with it. The measured Roof Health Score at the assessment decides the rest.

12 years

Roof condition

Estimated zoneFairRoof Health Score band 75-89 · estimate 78Sound, with the first signs of wear.
Single applicationFortify1x · one coat12 yearsFull coverage years 1-5, then reducingMax warranty value per sq ft: $1.60 / sq ft
Dual applicationRecommendedFortify Elite2x · two coats15 yearsFull coverage for the whole periodMax warranty value per sq ft: $2.30 / sq ft

This is an estimate. Your exact Roof Health Score is measured at the free assessment and decides final eligibility and coverage.

Free assessment, no obligation. Six zones, one measured score.

Questions that follow on

Get my roof scored

The free assessment measures the condition, confirms the treatment and puts the price in writing. No obligation, and no phone call to schedule.