Unless the fire stopped on its own, there was a heavy amount of water being sprayed into the home and that brings additional damages & hazards that you need to be aware of (wood rot, mold, etc.)

Gloss White , Oil bases enamel, and a HVLP spray gun. 

You spray a little water on it and scrape.  

If I can spray bleach on a moldy spot and be good to go, then awesome, but if it requires licensed contractors, so I don't end up in some mold lawsuit down the road, then I'm trying to figure that out on the front end. 

Your furnace dies , the neighbors report a dead hooker in the backyard , you got bed bug roaches or termites everywhere some crack head broke out the windows and spray painted helter skelter on the siding!

However, the gravel is scheduled to arrive tomorrow so I sprayed weed killer on the entire driveway.

A blast from a can of spray paint a half hour or less before open house time would conceal the sign ...

Spray foam is not an acceptable roofing material.

If the exterminator comes in and sprays, and the tenants have removed "ANYTHING", and they take it back in,the bugs will be back in a matter of days.

I sprayed the whole ceiling flat black - wood, ductwork, wires, everything.