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Choose the covering for the roof you have. Slope, structure, homeowner association rules and drainage decide which material fits, and a covering that suits a pitched house roof can be the wrong choice for a flat addition or a commercial building.
The short answer
Start with the building: the pitch, what the deck can carry, how water leaves the roof and what your association allows. Then choose a product, and write the whole installed system into the scope. Cost queries belong with a dated source, so this page compares selection criteria and relative tiers rather than prices.
At a glance
A starting comparison, not a specification. The cost tier is a relative guide and varies by project.
| Material | Where it is used | Cost tier | Repair-ability | What to confirm |
|---|---|---|---|---|
| Asphalt shingles (architectural and 3-tab) | Pitched residential roofs | Low to mid | Individual shingles; matching weathered color can be hard | Product line, color, accessories, ventilation |
| Metal (standing seam, exposed fastener) | Pitched roofs; some specified low-slope assemblies | Mid to high | Panels and flashings; depends on seam type | Panel type, attachment, minimum slope, HOA approval |
| Synthetic slate or composite | Projects wanting a slate or shake profile | Mid to high | Depends on product availability | Weight, approvals, warranty |
| Natural slate | Pitched roofs built to carry the weight | High | Individual pieces; specialist work | Structure, installer experience |
| TPO | Flat and low-slope roofs | Mid | Seams and punctures with compatible materials | Assembly, attachment, drainage |
| EPDM | Flat and low-slope roofs | Low to mid | Patches and seams with compatible products | Seams, accessories, repair history |
| PVC | Flat and low-slope roofs | Mid to high | Seams and repairs with compatible PVC | Building exposures, approved details |
| Roof coating | A suitable, dry existing roof | Low to mid | Recoating if the substrate stays sound | Substrate condition, moisture, preparation |
The manufacturer's assembly controls the specification for any product.
Pitched residential roofs
Which shingle type is right for a house? Architectural (laminated) shingles are built in multiple layers that give the roof a dimensional look. 3-tab shingles are a single layer with a flat profile. Many asphalt shingles use a fiberglass mat, so "fiberglass" and "asphalt" often describe the same shingle.
Do not treat all architectural shingles as identical. Name the product line, the color and the required accessories in the scope, compare the written warranty and ask how a later repair would match the existing shingles.
Asphalt shingle roofingMetal roofing
When is metal worth considering, and what is the catch?
"Metal roof" covers different panel designs. Standing seam panels hide their fasteners, while exposed-fastener panels are screwed through the surface, so they are not the same assembly at a different price. Ask about the panel profile, attachment, allowance for movement, flashing and the approved minimum slope for the product.
Cost, installation quality and association rules. Attachment, flashing and movement details matter, and some homeowner associations restrict appearance. Get approval before ordering. Ask whether a damaged panel can be replaced later and which accessories must stay compatible. Read our metal roofing guide for Northern Virginia for more.
Slate and shake looks
Can I get a slate look without natural slate? Synthetic products can imitate slate or shake, but their properties vary. Do not assume one product's weight, product approvals or warranty apply to another.
Check the exact product documentation, the fastening and accessory details and whether the roof structure suits the product. Our synthetic slate installation guide goes further.
Flat and low-slope roofs
Which membrane suits a flat roof? The right answer depends on the building and the manufacturer's approved assembly.
A thermoplastic membrane whose seams are heat welded. Confirm the specification, attachment, insulation and drainage details.
A synthetic rubber membrane. Seams and accessories depend on the system, so confirm compatibility and the repair history of the roof.
A thermoplastic membrane with heat-welded seams. Ask about the building's exposures, such as grease or chemicals, and the approved details.
The membrane name does not define the insulation, cover board, attachment, drainage or warranty. Ask for the specific system, not the family name, and do not swap in a generic patch because two membranes look alike.
Start with commercial roofing for the project-level decision.
Approvals
They can. Confirm before you order materials.
See our Vienna page for more.
Beyond the product name
The covering is one line in the scope. Each item below changes the result, and warranty and product claims must be read in the manufacturer's own document. See roof replacement and the replacement cost guide.
What comes off, and the deck preparation.
The layers under the covering.
Walls, chimneys, drains and fasteners.
Airflow or water exit, clean-up and site access.
FAQ
Cost and installation quality. Attachment, flashing and movement details matter, and some associations restrict appearance. Ask for the panel type and the installation details in writing.
It varies by insurer and policy. Ask your carrier before you choose a material and get the answer in writing. See roof insurance claim help for what a roofer can and cannot do.
Architectural (laminated) shingles have multiple layers and a dimensional look. 3-tab shingles are a single layer with a flat profile. Compare the product line and written warranty.
It depends on how the building is used, exposures such as grease or chemicals, the seam method and the manufacturer's approved assembly. Ask for the specific system, not the family name.
Impact-resistant shingles are sold with a class rating. What the rating means for a given product is in its manufacturer documentation, and whether your insurer treats it differently is in your policy. Ask for both in writing.
Not necessarily. A change of roofing material can require a permit, and in the Windover Heights Historic District a Certificate of Appropriateness. Confirm with the building official and your association first.
See all roofing services.
Talk through the next step
Share the property address, the condition you are seeing and the decision you need to make.
