You could blend the two strategies, giving more diversification.  

All of these would need to be answered and plugged into a blended rate calculator to determine if it makes more sense to cashout refinance or use a HELOC. 

Shingle manufacturers change their colors every 5-8yrs, so you should be able to find the same matching shingle and blend it into the existing. 

I would love to find 15 because if the special wheated blend.   

One of the best tools out there is a blended rate calculator that can help you determine if HELOC or cashout makes more sense. 

HELOANS are an option, but you have to calculate your blended rate and compare that to a new first lien.

There are HELOANS - at that juncture, your best bet is to evaluate what is called the blended rate and compare that to an entire new first lien (cash out).

The disadvantage is that the indoor units are a bit large but if you place them nicely they'll blend in to any room.Another advantage is the upfront costs are much less than a traditional AC system.

If you have a lot of equity, sometimes a cash out refi will have a better rate than the blended rate of original mortgage plus HELOC.

Get (business) married - form an LLC for long-term partnerships. there are various blends of this