First, in regard to 'After' on http://www.guyetteroofing.com/blog/montgomery-roof-115. That weird little split looks a lot better than the crazy cobbled psuedo-valley they had going on. I've done some roofing in the past, as a home owner and a starving student (Local job boards - between 15 credit hours - it helps if you can do construction). That job was a big improvement. I would imagine the ridge vent will add a bit of life to the job and make summers a little more bearable.
I've worked with quite a few commercial and residential contractors in the DFW area. There was a common theme that I noticed that I like to call 'Contractor's Syndrome'. Usually I would run into 'Name Roofing and Construction', 'Name Construction', 'Name Contracting', 'Name Contractors' and a few other variants. If the business had been around for more than a few years, the NAP cleanup was usually pretty involved.
I think this is the case here. There are a lot of citations for Guyettes Contracting LLC including the BBB listing. All in all, I picked up Guyette's Roofing and Construction, Guyette Roofing and Guyette's Contracting. The last being the most prominent. So it's safe to say there are actually a lot NAP inconsistencies happening.
There are a lot of great local citations for Guyettes Contracting, so if I had to do it myself and run a business - I would probably err towards using that. The site seems to be doing okayish in organic for three months old. So just make sure that you're properly categorized in your local listings.
I noticed that you have another domain, which is owned by Hibu. If it's not doing anything for you, shut it down and ask them to transfer the domain to you. I've seen domain transfer requests go both ways with Hibu, but I wasn't handling the admin stuff at those times.
As an on-site consideration, I would recommend using Schema markup on at least your contact page. I noticed you're using Weebly, so I'm uncertain of your level of skill with site editing. I'll post a couple of snippets after this, one filled out with Guyette's Roofing - and one that's blank-ish. That way you'll have an example, should you go with a different name.
First Example: Filled Out
Just note that Schema markup isn't cruise control for local/organic rankings. It's just a nifty way to spoon feed search engines and possibly get some nice snippets. Hopefully that will help some.