Can a roof collapse if drains are clogged?
If the roof has a parapet wall that extends above the roofline where the water cannot escape over the gravel stop (i.e. metal edging), the water can put additional weight and pressure on a roof forcing it to deteriorate or collapse. Check your drains bi-annually (minimum) to prevent clogs from damaging your roof. Pfister Roofing offers preventive maintenance services.
