On this pageShow contentsHide contents
Before comparing coating benefits, establish whether a coating is suitable at all. Reflectance, moisture, substrate condition and written product requirements matter more than a promise to make an old roof new again.
Potential reflectance benefit
A suitable reflective product can affect solar heat gain, but annual energy results depend on climate and the building. EPA notes a possible winter heating penalty in cold climates, so do not promise a fixed bill reduction.[1]
Water-management limits
A coating is not a universal remedy for a leak. Assess the cause, drainage, wet layers and compatibility before treating appearance as evidence that the roof has been renewed.
Appearance and property-value questions
An acceptable finish may be one goal, but color, weathering, compatibility and future maintenance still matter. No resale gain, fixed lifespan extension or maintenance-free outcome follows automatically.
Not every covering is a candidate
ARMA’s guidance is specifically against field-applied coatings and rejuvenators on installed asphalt shingles. Other assemblies need their own manufacturer and project assessment; a coating claim is not permission to paint the roof.[2]
Questions for a written proposal
- What exact roof assembly and product are involved?
- How are defects, moisture and adhesion assessed?
- Which repairs and preparation are included?
- What performance, maintenance and warranty terms actually apply?
Read the roofing questions and compare the actual scope rather than a universal coating promise.
References
General homeowner information, not a property-specific assessment. Requirements and product instructions vary. Leave roof access, diagnosis and hazardous work to qualified professionals.