ModifiedBitumen RoofRestoration
Modified bitumen roofs fail predictably — alligatoring surface, lap seam separation, and granule loss expose the substrate to accelerating UV damage. Silicone restoration encapsulates these failure patterns, delivers a waterproof membrane over the existing surface, and extends roof life by decades without tear-off.
Modified Bitumen Restoration
vs. full tear-off.
The spec sheet
Your board
will read.
Every performance claim, documented. No marketing language.
| Performance Spec | Our SystemModified Bitumen Restoration |
|---|---|
Compatible substrates | SBS modified bitumen, APP modified bitumen, smooth and granular cap sheets |
Coating | 100% silicone (moisture-cured) |
Surface treatment | Alligatored areas mechanically prepared before coating |
Seam reinforcement | Fabric-embedded silicone at all laps and terminations |
Ponding water rated | Indefinite standing water exposure |
UV reflectivity | 80–90% (ENERGY STAR qualifying) |
Warranty | 10, 20, or 30 years manufacturer-backed |
Source: manufacturer product data sheets + third-party ASTM aging tests. Last updated this quarter.
What we can
restore.
If your deck substrate is listed, this service is a candidate. If it's not — or if moisture content exceeds 30% by volume — we'll tell you that too.
No surprises.
No pressure.
Just documented work.
Infrared moisture survey identifies wet insulation and maps alligatoring, granule loss, and lap failure patterns. Restoration candidacy confirmed in writing.
Loose granules removed, alligatored areas treated, all lap seams reinforced with fabric-embedded silicone. Surface cleaned and primed.
Full-surface silicone applied at manufacturer-specified DFT, encapsulating the degraded surface and delivering a seamless waterproof membrane.
Manufacturer warranty issued for 10, 20, or 30 years. Post-installation inspection confirms complete coverage of all prepared surfaces.
The
numbers
don't lie.
Per-square-foot pricing for Modified Bitumen Restoration. Compared side by side with full-replacement baselines from 200+ projects.
Modified bitumen replacement runs $8–16/sq ft. Silicone restoration at $3–6.50/sq ft saves 50–65% while delivering equal warranty coverage.
Model My ProjectCommon questions
about this service.
Pulled verbatim from assessment calls on this specific service.
01Can silicone be applied over granular cap sheet modified bitumen?
Yes, but granule removal is required in field areas first. Loose granules prevent proper silicone adhesion.
02My modified bitumen roof is alligatoring — can it still be restored?
Surface alligatoring is one of the most common modified bitumen restoration scenarios. We mechanically prepare the alligatored areas before coating. The silicone membrane encapsulates the degraded surface and stops further oxidation. Restoration candidacy depends on insulation condition and deck integrity, not alligatoring severity alone.
03What is the difference between SBS and APP modified bitumen for restoration purposes?
Both restore the same way. SBS and APP modified bitumen have different original installation methods — SBS is cold-applied or torch-applied, APP is torch-applied — but both accept silicone overcoat with the same preparation approach. We confirm specific primer requirements for each project before application begins.
04How long does silicone restoration on modified bitumen last?
Manufacturer warranties run 10, 20, or 30 years depending on dry film thickness and selected warranty tier. At warranty end, the system is recoated at specified mil thickness for another full term. No tear-off required at renewal. The modified bitumen beneath the coating stays in place as the substrate.
05Does modified bitumen restoration qualify for Section 179 tax deduction?
Yes. IRS regulations classify roof restoration over an existing substrate as a repair expense eligible for immediate Section 179 deduction. Full modified bitumen replacement is capitalized and depreciated over 39 years. On a 150,000 sq ft warehouse roof, the tax treatment difference between the two paths can be significant. We provide CPA-ready documentation.
Everything
connected.
Related services, industries where this applies, and reference material.
Stop deferring.
Start restoring.
Get a documented roof assessment from a certified technician. We'll tell you exactly what your building needs, what it will cost, and whether this service makes financial sense — before you spend a dollar.