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Decks, roofs, rotted trim and doors: Guaranteed Carpentry and Roof Repair handles the wood-and-weather side of a house, and it holds 4.9 stars on Google from 66 ratings. A customer named Rodney Lauffer as the owner. One customer had a wet rot problem in an exterior wall of a three-season porch; Rodney assessed it, and his sub-contractors Mark and Jacob tore out the rot, replaced the rotted components and reinstalled the vinyl siding. Mark and Jacob, Rodney's employees, arrived in the morning and worked through the day to build a 16x20 foot deck for another household. One customer said Rodney walked them through repairs needed all over a roof from years of tree and water damage, and that the work was completed in a timely way. A customer who wanted a double door replaced with a single door with side lights and new shutters said Rodney ordered everything and solved a couple of issues that came up. A 2026 customer said Rodney designed and priced a roof and an 8 x 16 shed together, and that the crew showed up the morning after a snowfall and got the roof done in one day. A 2026 customer said the company did a kitchen remodel and built an addition, including pouring the foundation, framing, and tying the new roof into the existing one. In a 2023 review, a customer said Rodney rebuilt a deck floor, stairs and railing tops and added support posts where a hot tub would sit.
Impressed with Guaranteed Construction! Rodney, the owner, was easy to work with and schedule, and the pricing was very fair and reasonable. Rodney's crew were friendly, professional, and respectful throughout the whole process. They did an amazing job on my deck project, and I couldn't be happier with the outcome. Highly recommend!
Recently I had the roof done by this young man Rodney Lauffer from Guaranteed carpentry and roof repair LIC. He did an excellent work and was completely honest with me. The price was fair taking in consideration everything is very expensive. It is hard to find such trustworthy service these days. I highly recommend him to anyone.
Great quality and price. I needed a bunch of repairs all over my roof from years of tree and water damage. Rodney came and walked me through everything and made me feel at ease. They completed the work very timely as well. Very satisfied with the work. Thank you
Most seasoned carpenter I’ve hired in 30 years. Went above and beyond the original scope of the repair. Handled each problem with a thorough solution. Done right, and beyond my expectations each time. Real value for the quoted price. Old saying in the trades: fast, cheap, right. Pick two. I got the two I was looking for.
I had a wet rot problem with an exterior wall on my three- season porch. Rodney, the owner of Guaranteed Carpentry, promptly came over, assessed the problem, and offered a very fair job price for my consideration. I accepted, and I’m glad I did. His sub-contractors, Mark and Jacob, did an excellent job. They tore out the rot, made sure I could see their progress, replaced the rotted components, and reinstalled the vinyl siding. Bingo! I had a sound wall and it appeared like it never been touched.
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2 changes recorded — last scanned Oct 30, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from Guaranteed carpentry and roof repair llc. Use it to sanity-check bids, then get the real number in writing.
A typical single-level deck is 12×16 — about 200 sq ft.
Estimated range
$6,800 – $12,800
Typical carpentry project around $9,800
In-law cottage addition management4.9
