Called three different companies to come over and give me an estimate for just a layover. That is adding a second row of shingles over the existing ones on the roof. All three companies came. One company sent a man who walked around the house and then gave me an estimated for a complete new roof. Removing old shingles and putting on a new roof. I told him I only wanted a layover and he said they couldn't give me a warranty for their work unless they did the complete job. The second company came, got on the roof, measured and then said they would send an email quoting price for complete roof, or just the layover that I wanted. The email came and the only estimated that they gave me was for a complete new roof. Otten's Custom Roofing came, walked the roof, measured and he also stated that he would send a quote. His quote was for just the layover which I had requested. I of course had them do the job. They were very professional and had the job done in one day, including all the cleanup. Would highly recommend Otten's Custom Roofing.