Is This a Terrible Idea?

[Tim Porsche]

So, I have about 400 - 500 sq. feet of roofing that needs replaced at a rental. Some of it is asphalt and some is shingle. There are about four different sections...three of them are porch roofs and one is just a very small patch where part of the living room protrudes out from the rest of the structure. The main roof has already been replaced by a licensed and bonded roofer.

So my question is, for just this small area and because they are just porch roofs and not protecting the main structure, would it be a bad idea to have a skilled handyman who has done roofing before replace these sections of roof? What's the worst that could happen in this situation if it's not done 100% properly? I'd like to save some money, but not at the cost of causing bigger issues down the road. Thoughts? 

[Brian Pulaski]

Do you have any photos?

Some things I would determine on my own first: Is the flashing in good shape? Does it need drip edging or no? Are the existing shingles 3 tab and single layer? Does the town allow a second layer, or always a strip and reroof?

If he was doing a shingle tear off, and reroof there isn't much to ask. If you are supplying materials, get your ice and water (to code), shingles, felt, drip edge if need be and nails. I would make certain he is following manufacturers installation requirements. They usually specify how many and what type of nails. Make certain he removes the adhesive covering on the back of the shingles. Be on top of him to touch base if there is sheathing damage, and maybe have some plywood and materials on site to fix if need be. Make sure he is very cautious to keep the site clean (want to avoid issues with the town). One thing that may come up (not sure how often in your area), but if he has the proper fall protection. If you have a guy on the roof and he is not tethered or wearing the proper gear, it is a liability to you, and if someone sees it and makes a phone call, it could open a can of worms.