Flat Roofing Services in Boston

PVC is the membrane we recommend for most Massachusetts flat roofs. Because we are a certified IB Roof Systems installer, a new PVC roof on a home comes with a lifetime material warranty (30 years on a commercial building), and we add our own 10-year workmanship warranty on top.

Seams are fused with hot air instead of glue, so nothing dries out or peels through a freeze-thaw winter. In white, PVC reflects summer sun; in any color it sheds snowmelt cleanly and stays flexible in February. A finished PVC roof is also the right base for a deck, solar panels or a green roof.

• Tip: PVC vs rubber for a Boston flat roof
• Request a free PVC roof estimate

TPO is a white, heat-welded single-ply membrane that has become the standard choice for commercial and mixed-use buildings in Massachusetts. It reflects sunlight the way PVC does, which trims cooling costs under a big open roof, and the reinforced sheet stands up to foot traffic from HVAC technicians better than rubber.

Our crews lay TPO in 10-, 12- or 20-foot rolls over a cleaned and prepared deck, weld every seam, and flash curbs, drains and parapets with matching accessories. We also repair and replace TPO roofs installed by others. If you are deciding between TPO and PVC for a new building, we will show you where each one wins.

• Request a free TPO roof estimate

A flat roof hides its problems well. From the street you cannot see the open seam behind the chimney, the low spot that holds water for three days after every storm, or the flashing that pulled loose over the winter. Our inspections cover the whole surface, every penetration, drain and edge, and end with a written report with photos and a ranked list of what to fix now, what to watch and what can wait.

For multi-story buildings, condo associations and roofs that are unsafe to walk, we add drone imagery to capture the entire roof from above. Buyers and sellers in Greater Boston use these reports to negotiate with confidence.

• Tip: preparing your property for roof work
• Book a flat roof inspection

In the South End or on Beacon Hill the roof is often the only outdoor space a building has, and a roof deck is the natural way to use it. The order of work matters: the waterproofing goes down first as a PVC membrane rated for foot traffic, and the deck, railings and planters go on top without a single fastener piercing the roof.

For balconies, walk-out roofs and smaller terraces we install Deck Shield, a slip-resistant walkable PVC surface that is welded like a roof but finished like a floor, so there are no sleepers or deck boards on top of the waterproofing to trap water and debris. We flash the doors and walls, add tapered slope for drainage, and coordinate with your deck builder or general contractor.

• See a finished rooftop deck in our projects
• Ask about a rooftop deck or Deck Shield

A replacement is the right moment to fix everything else that lives on the roof. We can raise an existing flat roof to add pitch for better drainage or to gain headroom in a top-floor unit. We install and replace gutters and downspouts sized for New England downpours, with scuppers and overflows that give meltwater a way off the roof, so an ice dam is far less likely to push water back under the membrane.

Rigid roofing insulation under the new membrane cuts heating bills in a drafty triple-decker and stops condensation on the underside of the deck. If solar is in your plans, we build solar-ready roofs with reinforced membrane and pre-flashed mounting points, and for green roofs we design the waterproofing and root barrier that keep a planted roof from becoming a leaking one.

• Ask about raising a roof, gutters, insulation, solar or a green roof