Flat-roof Systems
Flat-roof Systems | Roofing | Kingston
From the first consultation to the final seal, HEP turns Kingston’s challenging weather into an opportunity for performance. Our specialists design and install flat-roof systems that stand up to lake-effect snow, torrential rain and summer heat, using high-grade membranes and precision-engineered insulation. The result is a sleek, low-profile surface that reduces energy loss, simplifies maintenance and extends the life of your building—all delivered with the transparency and craftsmanship that have made us a local favorite for roofing projects of every scale.
Whether you’re retrofitting a commercial space or capping a contemporary home, we tailor every detail to your timeline, budget and aesthetic goals. Expect clear communication, tidy worksites and warranties that protect your investment long after the crews pack up. If you’re ready for a flat roof that’s as resilient as Kingston itself, let HEP bring its decades of roofing expertise to your door.
FAQs
What types of flat-roof systems do you install in Kingston?
We work with every major low-slope roofing technology to suit different budgets and performance goals. Our crews are certified to install single-ply membranes such as EPDM (rubber), TPO (thermoplastic polyolefin) and PVC, as well as multi-ply systems like modified bitumen (torch-on or self-adhered) and traditional built-up roofing (BUR). We also construct insulated concrete decks and green (vegetative) roofs when higher thermal efficiency or storm-water control is required.
How long can I expect a flat roof to last in Kingston’s climate?
Life expectancy depends on the membrane chosen, the quality of the installation and the level of maintenance it receives. As a rule of thumb, EPDM and modified bitumen roofs last 20–25 years, TPO and PVC 25–30 years, and multi-ply BUR or a protected membrane (PMR) system can exceed 30 years. Kingston’s freeze–thaw cycles, lake-effect snow and UV exposure mean correct detailing and regular inspections are essential to reach the upper end of these ranges.
What routine maintenance does a flat roof require?
All flat roofs should be inspected at least twice a year—typically in spring and fall—and after major wind or hail events. Maintenance tasks include clearing debris from drains and scuppers, checking seams and flashings for separation, resealing pitch pans and lap joints, and touching up protective coatings. A 30–60-minute professional inspection can prevent small issues such as ponding water or membrane punctures from turning into costly leaks.
Are flat-roof systems energy-efficient?
Yes. Modern membranes are manufactured in light, highly reflective colours that meet Cool Roof standards, reducing summertime heat gain and lowering HVAC costs. We can also install tapered polyisocyanurate insulation to meet or exceed Ontario Building Code R-value targets. For clients looking to maximize performance, a ballast, green roof or photovoltaic array can be added on top of the membrane to provide extra insulation, cut cooling loads and even generate electricity.
How do you ensure proper drainage and prevent ponding water on a flat roof?
Although called “flat,” low-slope roofs are built with a minimum 2% (1/4 in. per foot) slope. We create this slope by tapering the structural deck or using tapered insulation boards. Strategically placed internal drains, scuppers and overflow provisions move water off the roof quickly. During installation we laser-check elevations, seal all plumbing vents and use reinforced membranes at high-wear areas such as around HVAC curbs and parapets to eliminate leak paths.
What does a new flat-roof system cost in Kingston?
Pricing varies with membrane type, deck condition, insulation thickness and the number of penetrations. As a guideline, a fully adhered EPDM or TPO roof runs $10–14 per ft², while a multi-ply SBS modified bitumen or BUR system averages $12–18 per ft². Tear-off of an existing roof, added insulation and enhanced wind uplift fastening can increase costs. We provide free, itemized estimates that include material, labour, disposal, permits and manufacturer’s warranty so you can make an informed decision.