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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.
Probably my wording ...by 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.