Flat roofs and low-slope sections are where most South Florida roof leaks actually happen. These are the trickiest parts of a roof to install correctly — the margin for error on drainage, seams, and flashing is razor-thin. Get it wrong and you have a ponding, leaking problem within a year. Get it right and you have a durable, watertight roof that performs for decades.
Celestia Crest specializes in flat and low-slope roofing systems. We install modified bitumen, TPO single-ply, and built-up roofing (BUR) on everything from Florida rooms and back-porch additions to full commercial buildings. Every flat roof we install includes proper slope, proper drainage, proper flashing, and proper seam welding or sealing — so it stays watertight season after season.
Ponding water is the number one killer of flat roofs. If water sits on a low-slope roof for more than 48 hours after rain, the system is deteriorating faster than it should. That is why we evaluate drainage before we start every project — adding tapered insulation where needed, clearing drains, and making sure the roof actually sheds water like it was designed to. It is a small detail that adds years of service life.
Many flat roofs in South Florida are hybrid — part flat over a Florida room or back porch, part pitched over the main house. These hybrid roofs require careful coordination between the flat system, the pitched system, and the transition flashing where they meet. We handle hybrid roofs routinely and make sure the two systems tie together in a way that actually stays watertight through every rainy season.
When we inspect an aging flat roof, we often discover that a full replacement is not actually necessary — a coating or targeted patch can extend service life at a fraction of the cost. We always present the least-invasive option first and let you decide based on cost, lifespan, and your long-term plans for the building. Our job is to give you the facts; your job is to decide what makes sense.
We plan drainage before we start — adding taper where needed so water actually flows to the drains.
TPO and modified bitumen seams welded or torched for truly watertight bonds — no relying on adhesive alone.
Modified bitumen systems installed in multiple layers for redundant protection against leaks.
White TPO and reflective coatings reduce surface temperature and cooling costs on flat roofs.
Torch-down or self-adhered modified bitumen — the workhorse of South Florida residential flat roofing.
Heat-welded white TPO systems ideal for commercial buildings and large residential flat roofs.
Traditional multi-ply gravel-surfaced built-up roofing for commercial and institutional buildings.
Full tear-off and replacement of aging flat roofs with modern single-ply or modified bitumen systems.
Seam repairs, blister patching, flashing repair, and leak mitigation on existing flat roofs.
Silicone and acrylic roof coatings that extend flat roof life 5-15 years at a fraction of replacement cost.
We inspect the existing system, check moisture, and identify drainage problems that need fixing.
Based on use, climate, and budget, we recommend the best system — modified bitumen, TPO, or a coating.
Existing roof removed or prepped, insulation or taper added where drainage improvements are needed.
New system installed, seams tested, and final inspection to confirm watertight performance.
Modified bitumen lasts 15-20 years, TPO 20-30 years, and coatings extend life 5-15 additional years when applied before failure.
Usually because of poor drainage, failed seams, or bad flashing at walls and penetrations — all fixable with the right repair or replacement.
If the existing system is still dry and structurally sound, yes — coatings are a great way to extend roof life and delay replacement.
Yes. We can add scuppers, drains, or tapered insulation during a re-roof to solve chronic drainage and ponding problems.
Both perform well in Florida. TPO is slightly longer-lasting and more energy efficient. Modified bitumen is tougher against foot traffic and often less expensive.