Commercial Roof Installation in Brockton, MA
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A new commercial roof is one of the largest capital expenses a building owner takes on, and it has to perform for decades. Most of that performance is decided on installation day. The same membrane from the same manufacturer can last 30 years on one building and fail in 10 on another, depending on how the deck was prepared, how the insulation was attached, and how carefully the seams and flashings were finished.
MJY Construction installs commercial roofing systems for property owners, developers, and managers in Brockton and across Greater Boston. We handle full replacements on existing buildings and new roofs on new construction and additions. Every project is managed by our own licensed team, from the first inspection through the final walkthrough. We have been doing this work out of Brockton for more than 20 years, and we treat every installation as a roof we expect to maintain for the rest of its life.
Call (866) 766-3637 to schedule a free inspection and project consultation.
Commercial Roof Installation Services
Commercial installation projects generally fall into one of three categories. We handle all three.
Full Roof Replacement
When an existing roof has reached the end of its service life, we remove it down to the deck. We then repair or replace any damaged decking and install a complete new system. A full tear-off lets us see the condition of the structure and fix problems that would otherwise stay hidden under a new membrane. It also resets the clock on your roof entirely.
New Construction and Additions
For new buildings and additions, we work with your general contractor, architect, or project manager to install the roof on schedule and to specification. We review the plans for drainage, insulation, and penetrations before materials are ordered, so issues get caught on paper instead of on the roof.
Roof Recover Over an Existing Roof
In some cases, a new membrane can be installed over a single existing roof layer that is dry and structurally sound. A recover can save on tear-off and disposal costs. However, it is only the right choice when the existing roof meets code and moisture testing confirms the insulation is dry. We will tell you honestly whether your building qualifies.
Commercial Roofing Systems We Install
We recommend a system based on how your building is used, its drainage, the rooftop equipment, and your budget. We don’t simply install whatever is easiest for us.
- EPDM rubber roofing: a proven synthetic rubber membrane that stays flexible in freezing weather and is straightforward to maintain.
- TPO roofing: a white, heat-welded single-ply membrane that reflects summer heat and suits large, open roof areas.
- Modified bitumen roofing: a multi-ply asphalt-based system that holds up well to foot traffic and service visits.
- Architectural shingle systems: for apartment buildings, condominiums, churches, and mixed-use buildings with pitched roofs. We install these as a GAF Master Elite Contractor, CertainTeed Select ShingleMaster, and Owens Corning Platinum Preferred Contractor.
What Goes Into a Properly Installed Commercial Roof
A commercial roof is an assembly of layers, and each one has a job. When a bid is much cheaper than the others, one of these layers is usually missing or done poorly.
The Roof Deck
Everything starts with the structure. We inspect steel, wood, or concrete decking after tear-off and replace any sections that are rusted, rotted, or damaged before anything goes on top.
Vapor Retarder
On buildings with high interior humidity, such as pools, restaurants, laundry facilities, and some medical spaces, a vapor retarder keeps moisture from rising into the insulation and condensing there.
Insulation and Tapered Insulation
Rigid insulation, most often polyiso, controls heating and cooling costs and supports the membrane. Where a roof doesn’t drain well, we use tapered insulation to build slope toward the drains. Building slope this way is the most reliable way to get rid of ponding water.
Cover Board
A cover board adds a durable layer between the insulation and the membrane. It improves resistance to hail, foot traffic, and dropped tools, and it gives the membrane a smooth, solid surface to bond to.
The Membrane
This is the waterproof layer everyone sees. It can be attached in several ways, depending on the system and the building:
- Fully adhered
- Mechanically fastened
- Heat-welded
- Torch-applied
The attachment method matters as much as the material, especially for wind resistance on exposed South Shore buildings.
Flashings, Edge Metal, and Penetrations
Most commercial roof leaks start at the details:
- Walls and parapets
- Curbs around HVAC units
- Pipes and vents
- Drains
- The roof edge
We flash every one of these to the manufacturer’s specifications. We also install new edge metal and coping so the perimeter holds up in high winds.
Our Commercial Roof Installation Process
1. Inspection and Assessment
We start on the roof. We measure it, document its current condition, check drainage patterns, note all equipment and penetrations, and look for signs of trapped moisture. On replacement projects, we also look at the interior for leak history and deck problems.
2. System Recommendation and Written Estimate
You get an itemized written estimate that spells out:
- The system and each layer of the assembly
- The insulation thickness
- The flashing details
- The warranty options
If more than one system would work, we lay out the tradeoffs in cost, lifespan, and maintenance so you can make the call. The estimate is written clearly enough to present to partners, trustees, or a condo board.
3. Permits and Scheduling
We pull the required building permits and schedule the project around your operations, your tenants, and the weather. Material deliveries, dumpster placement, and any crane lifts are planned in advance and confirmed with you.
4. Site Preparation and Protection
Before work begins, we set up safety perimeters, protect landscaping and entrances, and cover sensitive interior areas below the work zone when needed. We also coordinate with your mechanical contractor if rooftop units need to be disconnected or raised.
5. Tear-Off and Deck Repair
We remove the old roofing in sections that can be closed up the same day, so the building is never left open overnight. Damaged decking is repaired or replaced as it is uncovered. We report any significant findings to you with photos before the work continues.
6. Installation
Our crew installs the full assembly: insulation, cover board, membrane, flashings, and edge metal. The project lead checks seams and details throughout the day, not just at the end.
7. Final Inspection and Closeout
Once the roof is complete, we walk it with you or your property manager and review the finished details. We then clean up the site completely and provide before and after photos, so you have a record of what was installed.
Planning Your Installation Around New England Weather
Commercial roofing in Massachusetts runs on the weather. Many adhesives and primers have minimum temperature requirements. Wet decks cannot be roofed over, and wind limits how safely membrane and insulation can be handled.
We plan projects so each day’s work can be finished and made watertight before the crew leaves. When possible, we steer large replacements toward late spring through fall. When a roof can’t wait for winter to pass, we choose installation methods and materials suited to cold-weather conditions and adjust the schedule as the forecast changes. You will always know where the project stands and why.
Keeping Your Business Running During Installation
A roof replacement shouldn’t shut your business down. On every commercial project, we do the following:
- Keep entrances, walkways, and parking areas open and clearly marked
- Schedule the noisiest tear-off work for off-hours when your operations allow it
- Give you a single point of contact who answers the phone and returns calls
- Close up and secure the roof at the end of every workday
- Clean the site daily, including magnetic sweeps for nails and fasteners
- Help you prepare advance notices for tenants, residents, or staff
Why Property Owners Choose MJY Construction for Commercial Installation
We are a family-owned company that has been based in Brockton for more than 20 years. We hold a Massachusetts Home Improvement Contractor registration (HIC 190768) and a Construction Supervisor License (CS-120075). We are members of the National Roofing Contractors Association and carry an A+ rating with the Better Business Bureau. Our clients have given us a 5.0 rating across more than 160 Google reviews, and they regularly mention our communication, documentation, and turnaround time.
Just as important, we are still here after the roof is installed. Many of our installation clients move directly into one of our roof maintenance programs. That keeps the new roof inspected, drained, and documented, which protects both the roof and its warranty. For the full range of services we provide to commercial properties, visit our commercial roofing page.
Commercial Roof Installation FAQs
How long does a commercial roof installation take?
It depends on the size of the roof, the number of existing layers, the amount of rooftop equipment, and the weather. A small commercial building can often be completed in a few days, while large or complex roofs can take several weeks. Your written estimate includes a projected timeline, and we update you if weather changes the schedule.
Do I need to tear off my old roof, or can you install over it?
A new roof can sometimes go over a single existing layer, but only if that roof is dry, sound, and allowed under the building code. If the roof already has two layers, or if testing shows wet insulation, a full tear-off is required. Installing over wet materials traps moisture and shortens the life of the new roof, so we don’t recommend it even when it looks cheaper on paper.
Will a new roof lower my energy costs?
It often does. Replacement projects usually include new insulation, which improves heating performance in winter. A reflective membrane like TPO can also reduce cooling loads in summer. The energy code can require added insulation when a commercial roof is replaced, so many owners see efficiency gains as part of meeting code.
Can you install a commercial roof in the winter?
Yes, with the right planning. We choose materials and installation methods suited to cold temperatures, work in sections that can be sealed the same day, and schedule around storms. Some systems and adhesives have temperature limits, so we’ll tell you if waiting a few weeks would produce a better result.
What warranty comes with a new commercial roof?
A new commercial roof typically carries a manufacturer warranty on the materials and a workmanship warranty from the contractor on the installation. Depending on the system and installer credentials, some manufacturer warranties cover the full roofing assembly. We explain your coverage options in writing before the project begins.
How should I compare bids from different roofing contractors?
Compare what each bid actually includes, not just the total. Line up the following across every bid:
- Tear-off versus recover
- Insulation type and thickness
- Tapered insulation for drainage
- Cover board
- Membrane thickness
- Flashing details
- Edge metal
- Permits
- Warranty terms
Also ask every contractor for current certificates of insurance. If a bid leaves any of these items vague, ask for clarification in writing.
Get Started on Your Commercial Roof Installation
Whether you’re replacing a failing roof or planning a new building, the first step is a clear picture of what the project needs. Our team will inspect your roof or review your plans and walk you through your options. You’ll get a detailed written estimate with no pressure and no surprises.
Call (866) 766-3637 or schedule your free inspection online. Our office is open Monday through Saturday, 7:00 am to 6:00 pm, at 244 Liberty St, Suite 11, Brockton, MA 02301. Ask about our financing options for larger projects.
MJY Construction
244 Liberty St STE 11, Brockton
- Luis and his team did an excellent job on our roofing project. I truly appreciated the professionalism they demonstrated throughout the entire process—from the communication and detailed documentation to the before-and-after photos they … More provided.
Being kept informed every step of the way, having my questions answered promptly, and being guided through the process made what could have been a complex project much easier.
It was a pleasure working with MJY Construction. Their workmanship, communication, and customer service were top-notch, and I would confidently recommend their services to anyone looking for a quality roofing contractor. - Thank you so much, Luis sad his team did such a wonderful job on our home. Everyone was very professional, and the quality of the work is amazing. My husband and I are extremely pleased with the siding. We are soooo happy with how everything … More turned out! Our home looks completely brand new. We truly appreciate all the hard work you and your team put into making our home look so beautiful. Thank you again! 🏡
- Great experience with this roofing company! They were fast, efficient, and did a high-quality job. Our roof was completed in just two days, within three weeks of our first meeting. Communication was great throughout the whole process, and … More they were always easy to reach. Luis was great to work with and made everything easy. Highly recommend!
- It was a pleasure working with Luis. They actually did 2 roofs in one day. Attention to detail was great. Very hard workers I would definitely recommend MJY Construction. Also, price was very reasonable. Thank you for a great job
