When is Boost + Fortify recommended?

Last updated October 28, 2026

Short answer

On a roof in the Low or Critical band. Boost alone gives 5 years on a prorated basis; Boost with Fortify gives 10 years with full coverage for the whole period at $1.50 per square foot. It is for a worn roof that still has something to protect.

The band it belongs to

Boost with Fortify exists on Low (35-43) and Critical. It is not a combination for a sound roof, and it is not offered in the Replace band, where the only row is the bridge.

So the first question is the score, not the product. If the roof still has a surface worth sealing, the combination is on the table.

What the two coats do

Boost is the hydrophobic siloxane coat: it makes the surface shed water rather than hold it. Fortify brings the UV shield over it.

Applied together, the pair carries full coverage across the whole term rather than the declining cover of Boost on its own, and the value per square foot rises from $1.10 to $1.50.

When Boost alone is the honest answer

Below 21 the only coverage in the table is the bridge: 3 years, fully prorated, at $1.10 per square foot. There is no two-coat row in that band, because there is not enough surface left for a longer term to stand on.

And if the roof is leaking or has soft spots, neither combination applies until the repair is done.

How it is quoted

The estimate names the row, the term, the coverage type and the value per square foot. Where both Boost alone and Boost with Fortify are available in your band, both appear with their own numbers.

That way the comparison is about your roof rather than about a range.

What the combination does not fix

It does not repair the shingle. If the roof is leaking, the leak comes first; if the edges are lifting and letting water behind the course below, that is a repair. The combination protects a surface, it does not rebuild one.

Nor does it move a roof out of its band: a Critical roof that takes Boost with Fortify is still a Critical roof, with ten years of full cover rather than a longer term it never earned.

What the two coats are doing

The order matters: the hydrophobic coat goes on first and the UV shield over it. That way the water behaviour and the sun protection are both being handled by the layer built for each job.

Neither coat is a repair and neither adds a second roof over the shingles, which is why the roof keeps its profile and its colour.

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.

Roof age12 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

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.

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