New Roof Installation in Washington D.C., Arlington & Fairfax
A new roof is the single system that protects everything beneath it, so on new construction and additions we build the whole assembly — not just the visible shingles. That means a clean, dry deck, ice-and-water shield at the eaves and in the valleys where DMV freeze-thaw drives water backward, a full layer of synthetic underlayment, correct drip edge and step flashing at every wall and penetration, and ridge-and-soffit ventilation balanced to the size of your attic. Get those details right and an architectural shingle roof reaches its rated 25–30 years; get them wrong and the best shingle in the world fails early. We install across Washington D.C., Arlington, Alexandria, and Fairfax County, and we match the system to your home's pitch, your budget, and the local climate.
Material choice on a new install comes down to how long you want the roof to last and what you want it to look like. Architectural (dimensional) asphalt shingles are the practical default in the DMV — roughly 25–30 years of life at about $6–$9 per square foot installed. Standing-seam metal runs longer, commonly 40–70+ years at about $10–$15 per square foot, and sheds snow and rain cleanly. Synthetic (composite) slate gives the look of natural slate at 40–50+ years and a fraction of the weight, typically $9–$16 per square foot. We walk you through the trade-offs honestly, with ranges rather than a single scary number, because the right answer depends on how long you plan to own the home.
Because we manage the whole build, a new roof coordinates cleanly with the rest of the build — flashing that ties into a new addition, gutters that actually carry the water away, and venting that works with the HVAC, not against it. Every install follows the manufacturer's specification, and we document the assembly for your records. We pull the required permits, protect your landscaping during the work, and finish with a magnet sweep so no nails are left behind. For a clear-eyed look at materials and expected lifespans before you decide, read our Roofing Guide, then call us for a free, itemized estimate.
Building new or adding on in the DMV? Call i4improvements at (703) 342-8068 for a free roof-installation estimate. Class A Virginia contractor, rated 4.9 across 59 Google reviews. We will help you choose the right system — architectural shingle, standing-seam metal, or synthetic slate — and install it to last.
Compare materials and expected lifespans before you decide — see our DMV Roofing Guide.
