Leo,
I have a 200 sf 20+ year old tar mop flat roof (one section of home) that started leaking recently. Due to age of roof, I want to replace. Proposals have included torch down (modified bitumen?) and TPO. As the roof is visible from second floor, I want a terra cotta, or similar color. Roofing contractors have informed me that white is only color for TPO, but I see much better color options on your roofcalc site. Questions: 1. In my circumstances should I be concerned about introducing a product alternative to a roofing contractor, as they apparently do not have experience / knowledge of that product and may not be able to work effectively with it?; 2. How do I find a competent, trustworthy roofing contractor?; 3. Would you recommend contacting the manufacturer (such as those you mention) and asking for qualified (certified) roofing contractors in the area?
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