- Portsmouth
- Industrial Roofing
- Slate Roof
- Green Roof
- Shed Roof
- Rubber Roofing
At John's Roofing & Home Improvements, we specialize in a comprehensive range of roofing services tailored to both residential and commercial clients in Portsmouth and surrounding areas. Our expertise encompasses roof installation, replacement, emergency repairs, waterproofing, and more, ensuring we can tackle any project from start to finish. With a focus on organization and attention to detail, we consistently deliver durable results that stand the test of time. Our well-coordinated team is dedicated to providing high-quality workmanship, whether addressing a minor leak or undertaking a major installation.
We pride ourselves on our ability to manage complex projects efficiently, ensuring that every aspect is executed with precision. When you choose us, you can trust that your roofing needs are in capable hands, allowing you to enjoy long-term peace of mind.
The majority of customer reviews for John's Roofing & Home Improvements reflect a highly positive sentiment, highlighting exceptional service, quick response times, and fair pricing. Customers consistently mention the professionalism and efficiency of John's team, noting that repairs are completed promptly and effectively. Communication is a strong point, with many reviewers appreciating John's responsiveness and transparency throughout the process. However, there is one significant negative review that criticizes the quality of workmanship, which suggests potential inconsistencies in service quality that prospective customers should consider.
- John came out and repaired my roof for a great price and within hours of contacting him.
- He was Fast, Fair, and super Friendly!!
- John is easy to talk with and actually cares what your problem is.
- He took the extra time to listen to exactly what we needed and went above and beyond to make sure we were completely satisfied.
- Exceptional service and highly recommend this company for any roofing needs.
- The subsequent repair looks like a 8 year old did the 'patch' job.
- The workmanship is just lousy to say it.
- I will not recommend this person and his service to anyone.

John came out and repaired my roof for a great price and within hours of contacting him. Excellent service!! Highly recommend

After recent long spell of storms and rain the roof over my den developed a slow leak. I called John's Roofing Saturday and they said they would be out the following Monday afternoon. They showed up on time, inspected the roof, explained what was happening and quickly made the repairs. Thank You.

John and his team are incredible! He got us scheduled instantly and began working right away. His team’s efficiency is remarkable. Highly recommend John and his team!
Company Locations
Head Office
Branch Offices
- Portsmouth
- Industrial Roofing
- Slate Roof
- Green Roof
- Shed Roof
- Rubber Roofing
The average roof replacement cost for a residential home typically ranges from $7,000 to $15,000, depending on factors such as roof size, chosen materials, roof pitch, and labor rates in your area. Premium materials or complex designs may increase the price.
The cost to replace the roof of a commercial building typically ranges from $5 to $12 per square foot, depending on several factors such as roof size, material, labor rates, building type, and local code requirements.
Several factors influence roof repair cost, including the extent of the damage, roof accessibility, material type, labor costs, and whether it’s a general repair or an emergency fix. Minor repairs can start around $150–$400, while major repairs may exceed $1,500.
Roof leak repair cost generally ranges from $300 to $800, depending on the size and location of the leak, the materials required, and labor intensity. Complex leaks involving structural repairs or interior damage will cost more.
Flat roof repair cost for commercial properties usually ranges from $500 to $3,000, depending on the roofing material (TPO, EPDM, PVC), the extent of the damage, and roof accessibility.
Mobile home roof replacement cost typically ranges from $3,000 to $8,000, making it generally more affordable than traditional home roof replacements, due to smaller size and simpler structure.
It's not necessary to stay home during roof replacement. Roofing work is noisy and can cause vibrations inside the house, which might be uncomfortable. Most homeowners choose to leave during major parts of the project, but our team ensures safety and keeps you updated, whether you're home or not.
The timeline for a roof replacement typically ranges from one to three days, depending on the size and complexity of the roof, weather conditions, and material type. Larger or more intricate roofs may take a bit longer, but we always aim for efficient, timely completion.
To hire a roofing contractor, start by researching local companies with good reviews and proper licensing. Request quotes from multiple contractors, verify their insurance and certifications, and ask for references. Always ensure you get a written contract that outlines the scope of work, timeline, and payment terms.
Check if a roofing company is legit by verifying their business license, insurance, and local certifications. Look for memberships in professional associations, read customer reviews, and ask for recent project references. A legitimate company will be transparent and provide all documentation upon request.
When choosing a roofing company, consider their experience, customer reviews, warranty offerings, and quality of materials. Make sure they provide clear communication, detailed estimates, and a solid portfolio of completed projects. Local expertise is also a major advantage for understanding regional roofing needs.
Warning signs that your roofing contractor might be ripping you off include vague contracts, pressure to pay large upfront deposits, lack of proper documentation, and unexplained price increases. Always ask for itemized estimates and written guarantees, and avoid contractors who avoid answering your questions directly.