How to properly ventilate a Mansard Roof?

[Shaitan00]

I recently purchased a home with a Mansard roof, I had some roofers come to give quotes to replace the top (it is finished) and they all recommend adding ventilation (known issue with Mansard's).

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• Shaitan00
• 26 Apr 2015
• 1

The problem is that they are offering two different solutions and I don't know which is best... hoping for some professional recommendations from the community.

1- Maximum Mansard Air-Intake drip edge
http://www.ventilation-maximum.com/English/product-air-intake-soffits.html#mansard
This is what 95% of the mansard homes on my street have and is the more expensive option

2- Ventilation Maximum (VMAXAT1 or VMAXAT2) uniformly positioned at the eaves
http://www.ventilation-maximum.com/English/pdf/product_special-air-openings.pdf
There is 1 house on my street that has it and it is less expensive


Any advice, first-hand experience, or help for me to decide which would be the right solution would be very much appreciated.
Thanks,

 

[Shaitan00]

Seems like my terminology might have been bad - when I say "finished" I mean it needs to be replaced immediately - the previous owner block all the soffits (thought they were mistakes) - so now I need to tear it down - while I am doing that I am going to improve the ventilation and thus my questions.

The roof is NOT flat (small pitch, not sure how many degrees), and there is an attic that I can get to and almost stand-up in (so pretty large).

Right now the roof top is the same as the sides, shingles (falling apart), and I plan to put new IKO 50 year fiberglass shingles on - would have loved metal but can't afford it.