We sat down with Marcus Torres, a 14-year veteran applicator and one of our most active community educators, for a deep-dive Q&A session. These are the 15 questions he gets asked most often — answered with the honesty and precision of someone who’s applied polyurea to over 1,400 roofs.
Marcus is a member of our certified applicator network and serves as a regional trainer for new applicators in the Mountain West. You can read more about career paths like his in How to Start a Profitable RV Roof Coating Business.
Q1: Is polyurea really that much better, or is it marketing hype?
“It’s genuinely better. I’ve worked with every major coating system — EPDM, TPO, acrylics, polyurethane. Polyurea is in a different league in terms of elongation, impact resistance, and cure speed. The challenge is that the word ‘polyurea’ has been diluted by products that use it loosely. True plural-component polyurea, applied correctly, is remarkable. DIY ‘polyurea’ in a bucket is a different animal entirely.” For the full chemistry explanation, see Polyurea vs. Epoxy vs. Urethane.
Q2: How long does the job actually take?
“Prep is 70–80% of the time. Application itself on a standard Class A is 45 minutes to 2 hours depending on complexity. But if I’m being honest about showing up, doing proper prep, applying, and cleanup, a full day for a complex job is normal. Rush jobs cut corners on prep, and prep is everything.”
Q3: Can it be applied in cold weather?
“Professional equipment can handle cooler temperatures, down to around 40°F in many formulations, but the substrate needs to be above the dew point. If you’re seeing condensation on the roof, it’s not the right day. Most of our winter work is in Southern states. Northern applicators typically have a late-spring to early-fall season.” See our winterization guide for seasonal considerations.
Q4: What happens if the coating gets damaged?
“That’s actually a question I love because polyurea repairs are very clean. A damaged area can be cut out, the edges feathered, and new material applied — and it bonds perfectly to itself. Most other coating systems don’t have that chemical compatibility with their own patches. One of the certified applicators in our network can handle any repair work anywhere in the country.”
Q5: My roof is 15 years old with the original EPDM. Is it worth coating instead of replacing?
“Almost always yes, with a caveat: if there’s structural damage to the decking, that has to be addressed first. But if the substrate is sound, coating over old EPDM with proper prep gives you essentially a new roof at significantly lower cost and disruption than full replacement. I’ve coated roofs that were in much worse condition than 15-year-old EPDM. It’s about the substrate, not the surface.” Our full analysis is in Replacement vs. Repair vs. Coating.
Q6: Do solar panels affect the application?
“Yes, and this is a question I wish more people asked before drilling into their roof. Solar panels create penetration points, which are manageable, but they also create areas that can trap debris, moisture, and heat. They can be worked around in coating applications but they add time and complexity. Read our solar panel roof guide before doing anything with panels.”
Q7: What’s the actual cure time before I can use my RV?
“Walking on the roof? 15–30 minutes. Light use? 1–2 hours. You can typically drive the rig same day. Full chemical cure to maximum properties takes 24–72 hours but you’re not going to be putting stress on it in that window anyway.”
Q8: Is there anything a polyurea coating can’t protect against?
“Structural failure underneath — if the roof deck is rotted, polyurea makes it watertight but doesn’t add structural strength. And no coating helps against a collision with a low bridge. Those are the real limitations. Our 47-point inspection helps identify structural issues before coating.”
Q9–Q15: More Quick Answers
Q9: Can it be tinted or colored? Yes, though the range of colors is more limited than paint. White and gray are most common for roof applications because of thermal reflection benefits.
Q10: Does it add weight to the rig? Minimal — a standard application adds 5–10 lbs to a typical Class A. Not a practical concern.
Q11: What’s your biggest piece of advice for owners considering coating? “Don’t wait until you have a leak. Water damage is exponential — a small infiltration becomes a big problem. Get a professional assessment now.” Find one through our applicator locator.
Q12: How do I verify an applicator’s credentials? “Ask for their certification documentation and check our certified applicator directory. We have quality standards that anyone in our network has met.”
Q13: Is the smell an issue? “There’s an odor during application from the isocyanate component. It dissipates within hours. We recommend good ventilation and staying off the rig for 2–4 hours after application.”
Q14: Can you apply it over a previous polyurea coating? “Yes, polyurea bonds extremely well to itself. This is one of its unique advantages for repair and top-coat applications.”
Q15: Where do I start? “Read the basics, understand your options, then get a quote from a certified professional. The consultation is low-pressure and you’ll leave knowing exactly what your roof needs.”