A built-up roof, or BUR, is a traditional flat roofing system made by layering multiple sheets of bitumen and reinforcing fabrics, then finishing with a protective layer like gravel or a reflective coating. These roofs are durable and provide good waterproofing, but over time they can develop issues like cracks, blisters, or seams that separate due to weather exposure, foot traffic, or poor installation. Simple diagnostics you can do yourself include looking for pooling water, feeling for soft spots on the roof surface, or spotting any cracks or missing gravel. These signs suggest the roof might be leaking or deteriorating, and you want to catch problems early to avoid costly damage inside the home.
When it comes to repairs, small issues like minor cracks or loose gravel can sometimes be patched with roofing cement or sealant you can buy at a hardware store. However, if the damage is more extensive, such as large blisters, significant delamination, or open seams, it's best to call a professional roofer. They have the experience and tools to assess the full condition, perform safe repairs, and keep your warranty intact if your roof is still covered. A couple of good questions to ask your contractor include: "What specific repairs will you make to stop the leaks without damaging existing layers?" and "How will these repairs affect my roof’s warranty?" Getting clear answers helps ensure your BUR system stays effective and that you avoid unexpected costs.