Roofing Tear-off – vs- Recover Board

I’ve obtained several estimates on redoing my existing roof and I ‘m wondering if anyone can offer their opinion?

One company wants to remove the roof down to the wood decking , install Firestone MB base sheet embedded in roofing cement, than installing a new Firestone SBS mineral surfaced modified bitument roof embedded in modified bitumen adhesive.

Another suggests…… Since I can’t afford his price for his complete removal…..

Screw down one layer of 1/2 inch recovery board over existing roof and cover with one ply of base sheet, then install new Firestone SBS (rubberized) roofing material over entire roof surface. They want to install a black roofing, yet all my adjoining roofs are silver, Is there a difference?

Also should a roof be painted with a fibered aluminum roof coating?

Thanks!

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