Maryland Window and Siding can handle all of your roofing needs. We perform shingle and flat roofing on both residential and commercial accounts.   As a Certainteed Quality Master you can rest easy knowing the roof will be done by experts. We install shingles from 25 years to 50 years in life expectancy. We also make sure the roof is ventilated properly with Cobra ridge vent systems and the underlayment of the roof is secured by felt paper and snow and ice shield. Is your flat roof giving you a problem? With our synthetic rubber roof system your problems are a thing of the past.  Add fiber board insulation to your flat roof system to ensure you get maximum performance.