Reflective Roof Coatings in Northwest Indiana

Free Roof Inspection and Surface Assessment

We inspect the existing membrane condition, checking for blistering, seam separation, ponding areas, and adhesion failure. We measure the total surface area and assess whether a coating is appropriate or whether the membrane first needs repair or replacement. This inspection is free and comes with a written assessment.

Surface Cleaning and Preparation

The membrane must be clean and dry before any coating adheres properly. We pressure-wash the roof surface to remove dirt, algae, and chalking. Any loose seams, punctures, or blisters are repaired and reinforced with compatible patching material before coating begins — skipping this step is the most common reason coatings fail prematurely.

Primer Application Where Required

Certain substrates — particularly aged EPDM rubber and some modified bitumen surfaces — require a bonding primer to ensure the elastomeric coating anchors correctly. We apply primer to the specified coverage rate, allow full cure time, and inspect adhesion before proceeding.

Elastomeric Coating Application by Roller or Spray

The elastomeric coating is applied in a minimum of two passes — a base coat and a finish coat — to reach the specified dry film thickness. We apply by roller on most residential and smaller commercial roofs; spray application is used for large commercial and industrial surfaces where uniform coverage at speed is required. Coverage rates and film thickness are verified against the manufacturer specification.

Curing Time and Final Inspection

Most elastomeric coatings reach initial set within 24–48 hours under typical Northwest Indiana summer conditions. Full cure takes 72 hours or longer depending on humidity and temperature. We schedule the final inspection after full cure to verify film continuity, coverage uniformity, and proper drainage.

TPO and PVC Membranes in Good Structural Condition

TPO (thermoplastic polyolefin) and PVC membranes that are structurally intact — without widespread seam failure, significant punctures, or saturated insulation beneath the membrane — are strong candidates for a reflective coating. A coating applied over a sound TPO or PVC field renews the reflective surface lost to UV weathering and adds a secondary waterproofing layer without the cost of a full tear-off. We verify membrane adhesion and insulation dryness before recommending a coating on either system.

EPDM Rubber Membranes

EPDM rubber (ethylene propylene diene monomer) can accept an elastomeric coating when the membrane is still bonded to the substrate and shows no significant delamination. Because EPDM is a low-surface-energy material, a bonding primer is required before coating — without it, adhesion fails quickly. Properties with aging EPDM that has already developed widespread surface crazing or seam lift are better served by replacement than coating.

Modified Bitumen and Built-Up Roofing

Modified bitumen (mod-bit) and traditional built-up roofing systems are well suited to reflective coatings when the existing layers are still bonded and the surfacing is intact. Granule loss on a mod-bit cap sheet is a clear signal that the membrane is weathering past the point where a coating adds meaningful life extension. Built-up roofs with active alligatoring or significant blistering need repair before a coating can be applied.

When Replacement Must Come Before a Coating

No coating can compensate for a roof deck with trapped moisture, insulation that has absorbed water, or a membrane that has lost adhesion over more than 25 percent of its surface area. Applying a coating over these conditions extends the visible appearance of the roof while the underlying problem continues to worsen. Our free inspection identifies whether a coating is the right tool or whether the roof needs a flat roof replacement first — and we explain the findings in plain language without pressure.