painted roofing shingles

We recently had a professional painting company come to paint the exterior of our home. Not only did they leave the job incomplete, which they've offered to come back and complete, they also got paint all over other parts of our exterior that were not supposed to be painted. This company used a sprayer and the sprayer left paint on our exterior lights, bilco door, windows (all of which can be repainted or scraped), but they also got paint on over 100 square feet of asphalt roofing shingles. They offered to come back and clean the shingles with a wire brush. Our question is Will that destroy the shingles? and What could get the paint off of the shingles without damaging them or ruining the warranty. (They are 30 year shingles that were put on 5 years ago).
We know that when they do come back to complete the job that they will be expecting full payment. However, we feel that they will need to compensate us for the damages done. The only problem is that we can't get a local roofer to give us an estimate or explain how to get the shingles clean.
Please help.

 

The first thing you do is call the shingle maufacturer. Ask him about the paint removal.

In the meantime, I would tell them to repaint or clean all the surfaces that they weren't supposed to paint but not to bring a sprayer.

 

Wire brush to scrub shingles? I don't think that's such a good idea.

 

I used to work for a company that sprayed close to 1000 exteriors per year. It was enivitable that a stray roof would get overspray. When this happened, we would get a gallon of latex paint the approximate color of the shingles and mist the shingles with a highly diluted mixture of the paint - about 1 gal paint to 4 gal water. This would effectively hide the overspray. If there were any consequences later on - I never heard of them. I worked for that outfit for approx 15 yrs.