How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask walkereng Your Own Question
walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 2741
Experience:  Structural Engineer with over 30 years of experience.
Type Your Structural Engineering Question Here...
walkereng is online now

Morning all,I'm having solar panels put on the house and

Customer Question

Morning all,
I'm having solar panels put on the house and some of them will be on the flat roof.
I want to treat the felt before the sloar instalation with some kind of waterproofing /long life protection as a preventative measure.
Loads of paints on the market all offering the best solution ever.... is there one that sticks out above all the rest.
I was taken with Acrypol+ but it really needs to be black in colour and they only do grey or white.
Submitted: 1 year ago.
Category: Structural Engineering
Expert:  walkereng replied 1 year ago.
I would really not suggest painting roof felt. If I were you, I would just install multiple layers of roofing felt. To me, that would be the cheapest and easiest. Let me know if you have any more questions.
walkereng and other Structural Engineering Specialists are ready to help you
Customer: replied 1 year ago.


Thank you for the response especially on a holiday weekend.

Is there a reason for NOT painting the existing roof felt, I value your advice based on your qualifications but it contradicts other advise that pushed me down the waterproofing path.

Please don't take that as disrespectful, I just curious as to why not to paint.


Expert:  walkereng replied 1 year ago.
Roofing felt is flexible and it is not made to be painted, so I am concerned that the paint will crack and fail over the long run and will not provide additional waterproofing capacity.
Customer: replied 1 year ago.

Probably my wording paint I meant waterproofing paint, even with new felt I'd want to over-protect the felt.

Did some more research and have chosen a brand that's not cheap but has some great reviews.

Thanks anyway.


Expert:  walkereng replied 1 year ago.
Good Luck with your project!

Related Structural Engineering Questions