Baltimore Roofing applies roof coatings in Baltimore, MD to extend the life of flat and low-slope roofs. A coating adds a new waterproof, reflective surface over a roof that is still sound, often for a fraction of the cost of replacement. Silver coating on rowhome roofs is a familiar sight across Baltimore City, and we also apply elastomeric acrylic and silicone coatings. Most rowhome roof coatings cost about $1,500 to $4,000.
Types of roof coating
- Aluminum (silver) coating: the classic Baltimore rowhome finish over modified bitumen and built-up roofs. Reflects sunlight and slows aging.
- Elastomeric acrylic: a white, flexible coating that reflects heat and stretches with temperature changes.
- Silicone: handles standing water better than acrylic, useful on roofs with minor ponding.
Benefits of coating a flat roof
- Adds years of life to a roof that is aging but still dry underneath
- Reflects summer sun, lowering roof surface and top-floor temperatures on Baltimore’s 90°F days
- Seals small cracks and weathered areas
- Costs much less than a flat roof replacement
- Can be renewed every several years
When a coating is not the answer
A coating can’t fix a roof with wet insulation, soft decking, large blisters or failed seams everywhere. It also won’t hold on a roof with deep ponding that sits for days. In those cases we’ll recommend repairs first or a replacement. Coating a failing roof just hides problems for a season.
Our coating process
- Inspection. We check for moisture, soft spots and seam condition.
- Repairs. Seams, blisters, flashing and punctures are fixed first. See roof repair.
- Cleaning. The roof is cleaned so the coating bonds.
- Primer and reinforcement at seams and flashing where needed.
- Coating application at the manufacturer’s thickness.
Coatings for rowhomes and commercial roofs
Coatings are especially useful on Baltimore rowhomes, where they protect the roof and reduce heat in top-floor bedrooms. See rowhome roofing. On larger buildings, coating is a common way to extend a membrane’s life. See commercial roofing.
Where we apply roof coatings
Rowhome neighborhoods including Canton, Hampden and Federal Hill, and Baltimore County communities like Dundalk and Essex.
Roof coating questions
How often does a flat roof need recoating?
Silver coatings are often renewed every few years; elastomeric and silicone coatings usually last longer. We’ll tell you what to expect for your roof.
Will a coating stop my roof leak?
Only if the leak source is repaired first. The coating protects the roof; it doesn’t replace a proper repair.
What is the best time of year to coat a roof in Baltimore?
Late spring through early fall, when temperatures are warm and dry enough for the coating to cure.