Built-up roofing (BUR) is a popular choice for hot desert climates because of its durability and excellent protection against intense heat. BUR consists of multiple layers of asphalt or coal tar felt, which are laminated together with hot asphalt or cold adhesive, topped with a gravel or mineral aggregate for UV protection. In a hot desert environment, the key is selecting materials that can withstand extreme temperatures without cracking or fading. A BUR roof with a reflective mineral surface or light-colored gravel can help reduce heat absorption, lowering cooling costs inside the building. The multiple layers provide a robust membrane that resists weathering, thermal shock, and expansion. Over time, the asphalt can dry out under constant sun exposure, so it's important to choose a product with additives that improve flexibility and UV resistance.
You can do some simple DIY checks to monitor your BUR roof’s health. Look for signs of blistering, cracking, or uplift of layers, especially after hot days. Also, check that the gravel surface hasn’t become bare or washed away, which reduces protection. If your roof feels unusually hot inside or if you notice granules in your gutters, it could mean the surface is deteriorating. While small issues can sometimes be patched, call a roofer if you notice large cracks, water pooling, or blistering that continues to worsen. When consulting a contractor, ask if they recommend a specific asphalt type or mineral cap that suits desert heat and whether the installation method they use ensures proper adhesion. It’s also wise to verify how their choice ties into the manufacturer’s warranty, so you get coverage for heat-related damage if needed.