How long does a roof coating last?

5–20 years depending on the material and climate. Silicone typically lasts longest on low-slope commercial roofs; acrylic is shorter but easier to recoat.

Can I apply roof coating myself?

Small acrylic patch jobs are DIY-friendly. Full-roof coatings should be professionally applied — surface prep, mil thickness, and cure conditions decide whether the coating lasts 3 years or 15.

Does roof coating really lower energy bills?

In hot climates, yes. Reflective coatings can cut roof surface temperatures 50–70°F and reduce summer cooling loads 10–20%. Savings in cold climates are much smaller.

Will a coating fix an active leak?

Only if the leak is from a surface crack, seam, or minor flashing failure. Coating over saturated insulation or rotted decking will not stop the leak and can hide worsening damage.

Is roof coating a good option for asphalt shingles?

Rarely. Most manufacturers void the shingle warranty when a coating is applied, and steep-slope shingles are not the intended substrate. Coatings are primarily for flat and low-slope roofs.