Asphalt Shingle Roofing in Columbia, MD
5.0 on GoogleAsphalt Shingle Roofing in Columbia, MD, Vented and Flashed Right
Diakite Roofing & Restoration installs Owens Corning architectural shingles across Columbia and Howard County. Nearly every roof in Columbia is asphalt shingle, and the ones that fail early usually fail at the nailing, the valleys, the flashing or the ventilation, so those details get the most time on our installs.
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The Short Answer
Diakite Roofing & Restoration installs Owens Corning architectural asphalt shingles on homes in Columbia and across Howard County, Maryland. Every install includes ice and water barrier at the eaves and valleys, synthetic underlayment, shingles nailed to spec, new step and wall flashing, and balanced intake and ridge ventilation.
- Why architectural shingles over three-tab in Central Maryland? Architectural shingles are thicker, carry a better wind rating, and lay flatter over an older deck.
- Will you install over my old shingles on a Howard County roof? No. We strip to the deck.
- How many nails per shingle do you use on a Maryland roof? Six on most slopes, set in the nail zone at the correct depth.
- Do you reuse the flashing on a Central Maryland re-roof? New step flashing, new drip edge, new pipe boots.
In Plain Terms
- Diakite Roofing & Restoration is a roofing contractor based in Columbia, MD.
- Diakite Roofing & Restoration provides asphalt shingle roofing for property owners in Columbia, MD and the surrounding Central Maryland counties.
- Diakite Roofing & Restoration opens every job with a free no-obligation roof inspection.
- Diakite Roofing & Restoration installs Owens Corning architectural shingles on the roofs it replaces.
Asphalt shingle roofing across Central Maryland
Real job photos from our own site camera. Every asphalt shingle roofing job opens with a free no-obligation inspection.
The Difference
Why homeowners choose Diakite Roofing & Restoration for asphalt shingle roofing
More about Diakite Roofing & Restoration
Who We Work With
Asphalt shingle roofing in Columbia: materials, standards and permits
- Owens Corning. The architectural shingle we install is Owens Corning TruDefinition Duration, and you pick the color off real samples held against your own brick or siding.
- Xactimate. Insurance scopes are written in Xactimate, the estimating software your carrier already prices from.
- Howard County Department of Inspections, Licenses and Permits. We are based in Columbia, and the county office that issues the permit is the office to ask about the permit.
Good to Know
Asphalt shingle roofing: what Central Maryland homeowners should know
Architectural shingles and what you give up going cheaper
We install Owens Corning architectural shingles as the default. An architectural shingle is two layers bonded together, which is where its wind rating and shadow line come from, while three-tab is a single layer with cutouts that costs less by the square, carries a lower wind rating and shows every irregularity in the deck.
On a Maryland roof that takes April thunderstorm gusts and a humid August, we think the second layer is worth paying for.
Free inspection, firm written quote. Call (667) 200-6656.
If the attic ventilation is weak and you want a dark charcoal, we say so. A dark roof over a poorly vented Maryland attic runs hot enough to age the shingle from underneath, and fixing the ventilation becomes part of the job.
More about asphalt shingle roofing
Sealing, nailing, and the Maryland temperature window
Each course of shingles carries a factory sealant strip that has to warm up and bond to the course below before the roof holds its wind rating. Warm weather does that in a day.
Late fall and winter installs get hand sealing at the rakes, eaves, and ridge, because a shingle that never sealed can lift in the first strong gust behind a February front.
Great experience with this company. They were professional, punctual, and thorough during the roof inspection. They explained their findings clearly and provided honest recommendations without pressure. I appreciate their attention to detail and would highly recommend their services.
We set six nails per shingle on most slopes, in the nailing zone and driven flush, with more where the manufacturer calls for it on steep pitches and high-wind exposures.
A nail driven at an angle, overdriven through the mat, or set above the zone leaves the shingle held by sealant alone, and none of that shows from the ground once the roof is on.
The details that decide whether a shingle roof leaks
Shingle roofs mostly leak at the interruptions: the valley where two planes dump water into one channel, the chimney where masonry meets asphalt, the wall of a dormer, the pipe boot whose rubber collar has cracked in the sun, the eave where snowmelt refreezes and backs water up under the courses. Ice and water membrane at the eaves and in the valleys, correct step flashing at walls, counterflashing let into the chimney's mortar joints, and new boots on every penetration are the parts of a bid worth comparing line for line.
If a bid comes in well under the others, ask which of those items it leaves out.
Diakite Roofing & Restoration starts every shingle project with a free inspection, no obligation. Call (667) 200-6656.
Read First
A guide on this
When to Replace a Roof in Maryland Granule loss, cupped tabs and soft decking: what each one means on a Central Maryland roof, and when age stops being the useful question. Diakite Roofing & Restoration inspects and replaces roofs in Columbia, MD and across Howard County, and this guide is written from what we find walking them, with the chalked test squares and the photographs that go with them. The inspection that answers it is free.
Watch For These
Signs you need asphalt shingle roofing
- Granules collecting in the gutters and bald patches on the sunny slopes
- Shingle corners cupping or lifting where the factory sealant let go
- An attic that runs hot and humid, with rusty nail tips or damp sheathing
- Old three-tab shingles you want replaced with architectural
- Water showing up again at the same valley, chimney, or dormer wall
Seeing one of these? Call (667) 200-6656 or request a free estimate.
Our Work
Recent asphalt shingle roofing jobs
Included on a Full Replacement
100 feet of gutter with your roof replacement
Every full roof replacement we do across Central Maryland comes with 100 feet of gutter, gutter guard and downspouts on the same job. It is part of the replacement rather than a second trip and a second invoice, and it is the reason the water coming off a new roof goes where it should.
Included with a full roof replacement. It is not a standalone service, and there is no end date on it.
Book a Free Roof InspectionOur Process
The Diakite Roofing & Restoration asphalt shingle roofing process
- 01
Inspection and attic look
We look at the roof and, where the attic is accessible, the underside too. Ventilation and sheathing condition change what the new roof needs.
- 02
Shingle and color selection
Owens Corning samples at your house against your own siding and trim, then the written scope and price.
- 03
Strip to the deck
Every layer comes off. Bad sheathing gets swapped, then drip edge, ice and water barrier, and synthetic underlayment go down.
- 04
Shingles, flashing, and vent
Starter course, field shingles nailed to spec, new step and counter flashing, new pipe boots, then ridge vent and cap. Magnets over the property last.
Working out how to pay for it? Financing for this work comes through Enhancify. It and its lending partners take the application, make the decision and set the terms.
Featured Google Reviews
What homeowners say
Lassana came out and looked at my roof after all the crazy storms going around and told me that my roof doesn’t have any damages yet whereas all the over roofers told me I need a new roof. My
Roof was only 10 year old
Great experience! The contractor did an excellent job installing my siding. They were professional, efficient, and paid close attention to detail. The finished work looks amazing, and I would definitely recommend them to anyone looking for quality siding work.
Great experience with this company. They were professional, punctual, and thorough during the roof inspection. They explained their findings clearly and provided honest recommendations without pressure. I appreciate their attention to detail and would highly recommend their services.
Great job on my roof in Glen Burnie. Handled all the insurance claim. Very good crew. No complaints the roof look great, great clean up as well. I highly recommend.
This whole experience was stress- free and professional. Lass explained everything clearly step by step and made sure I was comfortable with the whole process. The work was neat and punctual and all the materials were cleaned up quickly. The roof looks great! I highly recommend their services, you will be very pleased with the results.
Excellent service from start to finish! The team is professional, responsive, and delivers high-quality work. I highly recommend them!
This company was very professional and very prompt. They explained everything to me in detail, along with pictures and videos. They got the job done quickly and thoroughly, and at a reasonable price. I would highly recommend Diakite Roofing and Restoration, and I would use them again if I needed to in the future.
Good to Know
Asphalt shingle roofing: frequently asked questions
Why architectural shingles over three-tab in Central Maryland?
Architectural shingles are thicker, carry a better wind rating, and lay flatter over an older deck. Three-tab costs less up front and shows every ripple in the roof.
Will you install over my old shingles on a Howard County roof?
No. We strip to the deck. A layover hides rotted sheathing, gives the new nails less to bite, and adds dead weight for nothing.
How many nails per shingle do you use on a Maryland roof?
Six on most slopes, set in the nail zone at the correct depth. It is a small thing that decides whether your roof is still up there after a real wind event.
Do you reuse the flashing on a Central Maryland re-roof?
New step flashing, new drip edge, new pipe boots. Bending old flashing back into place to save a little money is exactly how a brand new roof leaks at a chimney.
Who backs the shingles going on a Maryland roof?
Owens Corning does. The Owens Corning Duration shingles we install carry Owens Corning's Limited Lifetime warranty, which covers the shingle materials for as long as the original owner owns the home and transfers to a new owner on Owens Corning's terms. Coverage runs non-prorated for an initial period, typically the first ten years, then prorated from there.
It is a manufacturer's warranty on materials and not a warranty from us on the installation, so labor, tear-off and disposal are not covered, and neither is anything Owens Corning did not manufacture: the flashing, the fasteners, the pipe boots and the wood decking. Owens Corning publishes the terms for each shingle line, so get the ones for the line going on your roof and read them before you sign.
Where We Work
Areas we serve
More about where we work
Service Radius
Where we take asphalt shingle roofing calls across Central Maryland
Columbia is the hub every asphalt shingle roofing crew rolls out of, and the run is the same one the trucks make every morning: US-29, MD-108, MD-100, I-95 and Washington Boulevard. Those corridors are what put Howard, Anne Arundel, Montgomery, Prince George's, Carroll, Frederick & Baltimore Counties inside a working day, on a 35-mile radius out of Columbia.
| Town | County | From Columbia |
|---|---|---|
| Clarksville | Howard County | About 4 miles |
| Ellicott City | Howard County | About 6 miles |
| Laurel | Prince George's County | About 7 miles |
| Silver Spring | Montgomery County | About 16 miles |
| Rockville | Montgomery County | About 17 miles |
| Annapolis | Anne Arundel County | About 25 miles |
Straight-line miles between town centers, measured from geocoded coordinates. They are not drive times and not route mileage. We are a service-area business, so asphalt shingle roofing happens at your property, not at a counter.
The Baltimore County side of the radius has its own page: asphalt shingle roofing in Baltimore County.
Where we install asphalt shingle roofs: centered on Columbia, MD, across Howard County and six counties around it.
Related services
Roof replacement
Full tear-off and a new Owens Corning shingle system, with most Columbia homes finished in a single day.
Roof replacement in Columbia, MD →
Storm & hail damage restoration
Roof hail damage chalked and photographed slope by slope, then scoped in Xactimate for your insurance claim.
Storm & hail damage restoration in Columbia, MD →
Siding replacement
Old siding off, sheathing and house wrap inspected, openings flashed, new panels and trim on. Same crew that does your roof.
Siding replacement in Columbia, MD →