lifting shingles and re-use

I have a slate style metal roof. It was put on 12 years ago. It meets a flat rubber roof in a few areas. The rubber roof needs to be replaced. How can I get under the metal roof to slide the new rubber roof in and up behind the metal? I'm told I need to remove the entire roof. That will cost me more than $30,000, since the roofing companies I had out will only roof all or nothing. My metal roof was special order color. If I am correct, I think there was a min.order, when choosing a special order color. So, I can't re-roof the sides that come in contact with the rubber. I can't afford metal replacement. The roofers will not meet different materials at the top. Last, since the roof was put on, I've become a widow, so money is an issue. I can not get financing to have the entire roof replaced with any material. Added note. I too have had issues with ice dams, which I never had in 30 years with a non-metal roof. I too have gutter issues. I also have had grave stone size ice blocks fall from the roof, shaking the entire house and causing expensive damage. We thought metal was the way to go for lasting roof life, while saving money. Now when there is no money, it seems to be costing me more than if we had used a non-metal material. All I can say good about it, is it looks good. If you would please give me advise, I would be thankful.

"Ice dams are a heat loss issue. Fix the attic venting and insulation first." +1 More than likely this will solve your Ice dam issues...a new roof seems a bit of a drastic solution, plus your still going to have ice dams if you do not address the ventilation and insulation. The roof over the flat can be removed from the top down, set aside, and reinstalled after the low slope roof has been installed. Contact Metal Works and get a referral to an installer in your area... They may be able to do both the metal and the low slope.

Can't say I have worked with it but it does appear to be a system that is locked in place. That being said, someone who has worked with it previously might know some tips and tricks to unzipping it. Ice dams are a heat loss issue. Fix the attic venting and insulation first.