Roof material warranty -NOT for anything other than SFR?

[Rich Thomas]

I'm looking at a new roof for a townhouse (duplex) of which I own both units.  The roofing material literature given to me by the roofing company has a lifetime warranty and the fine print reads that it is for a single family residence and one owner.

My unit is a townhouse - two family residence. It looks like the material warranty would not apply to my roofing job because it is not a SFR and their are two families.

How does one handle this problem?