Roof coatings can add a new protective surface to an existing commercial roof, but they are not appropriate for every roof. Mid-West Roofing Systems serves commercial property owners across North Dakota, South Dakota, and Minnesota. Call (701) 500-9399 to discuss whether your roof is a sound restoration candidate.
The Evolution of Roof Coating Technology
Modern roof coating systems give building owners more restoration options than a simple surface patch. Depending on the existing roof and the selected system, a coating can provide a continuous protective surface, improve reflectivity, and extend useful service life without automatically requiring a full tear-off.
That does not mean every aging roof should be coated. The existing membrane or substrate, trapped moisture, drainage, prior repairs, surface preparation, and material compatibility all influence whether a restoration system can perform as intended. Mid-West Roofing Systems also installs a fabric-reinforced roof restoration system for several commercial substrates, which illustrates why system selection needs to follow the actual roof rather than a generic coating recommendation.
Why Invest in Roof Coatings?
When a roof qualifies for restoration, a coating can help protect the existing assembly from weather exposure and may postpone the need for full replacement. Reflective coatings can also reduce roof-surface heat absorption, although the effect on actual building energy use depends on insulation, HVAC performance, occupancy, climate, roof color, and the rest of the building envelope.
The financial comparison should be based on the actual scope. A coating project may avoid some tear-off and disposal work, but repairs, preparation, wet-material removal, drainage corrections, access, and the selected restoration system all affect cost. Restoration is valuable when it fits the roof’s condition, not because it guarantees savings on every building.
Is Your Roof a Good Candidate for Restoration?
The decision should be based on documented roof conditions rather than age alone.
| Factor | What Supports Restoration | What May Require Repair or Replacement First |
|---|---|---|
| Moisture | Insulation and substrate are dry enough for the proposed system, with no significant unresolved moisture | Saturated insulation, trapped moisture, or findings that still need confirmation before scope can be set |
| Adhesion | The existing surface can be cleaned, prepared, primed if required, and accepted by the proposed coating system | Widespread delamination, blistering, lifting, contamination, or another condition that prevents reliable adhesion |
| Substrate condition | The deck and supporting materials remain structurally serviceable | Rotten decking, structural deterioration, or widespread substrate failure |
| Drainage | Drains, scuppers, and roof geometry can manage water without an unresolved design defect | Ponding caused by slope, drainage, or structural conditions that need their own corrective scope |
| Compatibility | The existing roof, prior coatings, repairs, primer, reinforcement, and proposed materials are compatible | The proposed system is not approved for the existing material or prior surface treatment |
A roof coating does not correct ponding-water drainage defects, rebuild rotten decking, or dry out saturated insulation. Those conditions need to be investigated and corrected before restoration is treated as an appropriate solution.
What the Coating Process Involves
The project should begin with an inspection that documents the roof type, surface condition, seams and flashing, penetrations, drainage, prior repairs, and suspected moisture. Moisture screening can help identify areas that deserve closer investigation, but screening findings should not automatically be treated as proof of wet insulation. Important findings should be confirmed when they would materially change the project scope.
Preparation may include cleaning, removal of loose or failed material, repair of seams and flashing, treatment of eligible wet areas, and primer or reinforcement where the selected system requires it. Application should follow the specified coverage, thickness, curing, and weather requirements for that system.
Final acceptance should include a documented inspection of coverage, adhesion, repaired details, penetrations, edges, and any areas identified during the original assessment. Follow-up inspection should then be based on the system requirements, roof condition, project documents, and any unusual events rather than one universal schedule.
Environmental Impact and Sustainability
Restoration can reduce waste when it allows a serviceable roof assembly to remain in place instead of being fully removed. That can reduce tear-off and disposal compared with replacement, but the environmental benefit depends on how much of the existing roof can actually remain and what repairs are needed first.
Some coating systems are also formulated with lower volatile organic compound content than older products, but VOC levels and environmental attributes vary by product. Those claims should be checked against the specific system proposed for the project rather than applied to every roof coating.
Customized Solutions for Every Business
Different buildings place different demands on a roof. Rooftop equipment, service traffic, exhaust, drainage, insulation, exposure, substrate type, and repair history can all affect coating selection and preparation. Mid-West Roofing Systems’ broader commercial roofing services include restoration, repair, inspection, maintenance, insulation, and leak detection, so the recommendation can be based on what the roof actually needs rather than assuming coating is always the answer.
Call Mid-West Roofing Systems at (701) 500-9399 to discuss whether your commercial roof is a suitable candidate for restoration.
Frequently Asked Questions
How do I know if my roof is a good candidate for a coating?
The roof should be evaluated for moisture, adhesion, substrate condition, drainage, repairs, and compatibility with the proposed restoration system.
Can a coating fix a roof with ponding water?
Not by itself. If ponding is caused by slope, drainage, or structural conditions, those issues need their own corrective scope.
Will a reflective roof coating definitely lower energy bills?
No. Reflectivity can reduce roof-surface heat gain, but actual building energy use depends on insulation, HVAC performance, occupancy, climate, and other conditions.
What should happen after a coating is applied?
The finished system should be inspected for coverage, adhesion, repairs, edges, and penetrations, with future inspections scheduled according to the system, roof condition, and project requirements.