Built Local
What 80 to 100 Years Does to a Roof System
Much of Silver Spring inside the Beltway — Woodside Park, Sligo Park Hills, Seven Oaks, East Silver Spring and the bungalow blocks off Georgia Avenue — was built between the 1920s and early 1950s. These homes have board decking with knots and gaps, rafters sized to old lumber standards, and in many cases multiple generations of roofing stacked up. It’s common for our crews to open up a 20910 or 20901 roof and find cedar shingles under two layers of asphalt: three roofs’ worth of weight the framing was never meant to hold long-term.
The other Silver Spring signature is the low-slope roof: flat front-porch roofs on foursquares and bungalows, rear additions in Long Branch and Hillandale, and shed dormers everywhere. These sections fail years before the main roof does, because a shingle installed on a nearly flat pitch is a leak waiting for the right rainstorm. Add clogged gutters under the area’s dense tree cover and chronically under-ventilated finished attics, and you have the exact leak patterns we diagnose in Silver Spring every week.