- 1925 Watson St, Victoria, BC V8R 3H7, Canada
- Commercial Roofing
- Residential Roofing
- 24/7 Emergency Repairs
- Licensed & Insured
- Locally Owned & Operated
At Demoss Doctor, we specialize in roof cleaning, restoration, and treatments, serving both residential and commercial clients in Victoria, BC, and Friday Harbor, Washington. Our expertise encompasses a wide range of services, including roof inspection, roof vent installation, and roof waterproofing. We take pride in our ability to manage complex projects from start to finish, ensuring that every detail is meticulously addressed. Our organized and well-coordinated team is dedicated to delivering durable, high-quality results that provide long-term value.
We understand the importance of consistent work and attention to detail, which allows us to tackle various challenges with confidence. Whether you need a thorough roof inspection or comprehensive waterproofing solutions, we are equipped to meet your needs effectively. Our commitment to project coordination ensures that every job is completed thoroughly, reflecting our dedication to excellence in every aspect of our work.
The majority of customer reviews for GMO Construction are overwhelmingly positive, highlighting exceptional customer service, professionalism, and quality of work. Many reviewers appreciate the responsiveness and honesty of the team, particularly in urgent situations. Delivery of services is consistently noted as efficient, with projects completed on time and often under budget. Communication throughout the projects is described as clear and supportive, leading to high levels of customer satisfaction and strong recommendations for future work.
- Gerry was very responsive and helped us out majorly in a serious situation on a Sunday.
- The total project was completed under the quoted estimate and the clean up was spotless.
- The stone mason did an excellent job.
- I was very impressed by your attention to detail and the high quality of your repairs.
- Even though we are in the midst of a pandemic, Gerry came back out within a day and fixed it completely.
Customers are fully satisfied

Gerry was very responsive and helped us out majorly in a serious situation on a Sunday. He was very honest and helpful, and fixed the problem q promptly. We definitely recommend them. Thank you Gerry!!

We have just used three components of GMO Construction. We had our walkway extended, chimney repaired and restored and our roof de mossed. We found their workers very courteous, efficient and professional. The total project was completed under the quoted estimate and the clean up was spotless. If you need quality work done around your home, we recommend that you call Geraldo Migliorini at GMO Construction services first. Keith and Marion Holden

After going thru the quote process with 3 well known contractors, I had pretty much given up on finding a reputable company I could afford, to repair my 75 ft rock retaining wall.
Fortunately, by chance, I came across GMO construction and, after the owner viewed my repair needs, i now have a completely repaired retaining wall. This wall was completed in just five days and the stone mason did an excellent job.
I am very pleased to have come into contact with GMO Construction and I will definitely use them in the future.
- 1925 Watson St, Victoria, BC V8R 3H7, Canada
- Commercial Roofing
- Residential Roofing
- 24/7 Emergency Repairs
- Licensed & Insured
- Locally Owned & Operated
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.