Residential Roofing Terms

A plain-language homeowner’s guide to common roofing materials, components, insurance claim terminology, and maintenance tips.

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Roofing Glossary

A plain-language homeowner’s guide to common roofing materials, components, insurance claim terminology, and maintenance tips.

A – D

ACV (Actual Cash Value)

The value of your roof after depreciation is subtracted. It’s what your insurance company may pay if you don’t have replacement coverage.

Asphalt Shingles

The most common roofing material in the U.S., made of fiberglass coated in asphalt and topped with granules for protection.

Blistering

Bubbles or raised areas on shingles caused by trapped moisture or manufacturing defects.

Chimney Flashing

Metal installed around the base of a chimney to prevent water from leaking into your home.

Clay Tile Roofing

A roofing material made from natural clay, shaped and baked into curved tiles. Common in warmer climates, long-lasting, and fire-resistant.

Commercial Roofing Systems

Roofing systems designed specifically for commercial buildings, typically using materials like TPO, EPDM, metal, or modified bitumen to ensure durability and energy efficiency.

Composite/Synthetic Roofing

Engineered roofing materials designed to mimic slate, wood, or tile. Lightweight, durable, and often impact-resistant.

Condensation

Moisture that forms inside the attic or roof space, which can lead to mold or wood rot.

Contingency Agreement

A document stating that the homeowner agrees to hire a contractor if insurance approves the roof replacement.

Cricket

A small peak built behind a chimney to help divert water away and prevent pooling.

Decking (Roof Deck)

The wooden base layer of your roof, usually made of plywood or OSB, onto which all roofing materials are installed.

Deductible

The portion of your insurance claim that you are responsible for paying before the insurer covers the rest.

Drip Edge

A metal flashing installed along roof edges to direct water away from fascia and prevent water damage.

E-H

Eaves

The edges of the roof that extend past the exterior walls of the house.

Eave Protection

Protective materials installed at the eaves to prevent water intrusion, often referring to Ice & Water Shield.

EPDM (Ethylene Propylene Diene Monomer)

A durable synthetic rubber roofing membrane used on low-slope commercial roofs. It’s valued for its flexibility, weather resistance, and long service life.

Exposed Fastener Panels

Metal roofing panels secured with visible fasteners, offering a cost-effective, durable solution for agricultural, industrial, and residential buildings. Available in various colors, lasting 30+ years with proper maintenance.

Felt Paper

Traditional underlayment made of asphalt-saturated felt, used under shingles.

Flashing

Thin metal installed around roof penetrations (like chimneys or vents) to keep water out.

Flat Roofing

A roofing system with a low slope or nearly horizontal surface, typically with a pitch of 10 degrees or less. 

Gable

The triangular section of a wall between the edges of a sloped roof.

Granules

Mineral particles on the surface of asphalt shingles that provide color and UV protection.

Gutter

Channels installed along the eaves to collect and direct rainwater away from the house foundation.

Hail Damage Roof Repair

The process of restoring roofing materials damaged by hail impacts. Hail can bruise shingles, dislodge granules, and weaken the roof’s ability to protect your home. Timely repair helps prevent leaks and insurance issues.

Hip Roof

A roof with slopes on all four sides, forming a pyramid or trapezoid shape.

Hail Damage

Damage caused by hailstones that can impact shingles, flashing, and other roof components.

I-M

Ice & Water Shield

A waterproof membrane placed in vulnerable areas (e.g., valleys, eaves) to protect against ice dams and leaks.

Ice Dam

A buildup of ice at the roof’s edge that prevents melting snow from draining and can cause leaks.

Maintenance Tips

Regular roof maintenance includes inspecting shingles for damage, cleaning gutters and downspouts, removing debris, checking flashing and vents, and scheduling professional roof inspections every few years.

Metal Roofing

A durable and long-lasting material made of aluminum, steel, or copper. Available in panels or shingles.

Moss Growth

Vegetation that can grow on roof surfaces, trapping moisture and causing damage over time.

N-R

Nail Pop

A roofing nail that has lifted over time, potentially causing shingles to become loose or damaged.

Pitched Roof

A roof with a slope designed to shed water.

Plumbing Vent

A pipe that exits through the roof to release air pressure from household drains.

RCV (Replacement Cost Value)

The amount your insurance will pay to replace your roof with new materials, without subtracting depreciation.

Residential Roofing

Includes all roof systems designed for homes. Asphalt shingles are the most common, but materials can also include metal, cedar shake, and tile. Residential roofs typically have steeper slopes and a focus on aesthetics and durability.

Rafter

Structural beams supporting the roof decking.

Ridge

The highest horizontal line where two roof slopes meet.

Ridge Vent

A vent that runs along the ridge of the roof to allow hot, moist air to escape from the attic.

Roof Inspection

A professional assessment of a roof’s condition, typically performed after storms, before buying or selling a home, or as part of regular maintenance. Inspectors look for signs of damage, aging, and areas that may lead to leaks.

Roof Insurance Claims

A request with your homeowner’s insurance company to cover repair or replacement costs for damage caused by a covered peril, such as wind, hail, or fire. Homeowners should document damage with photos, keep repair estimates, maintain records of communication, and understand their policy coverage.

Roof Leaks

Water intrusion points on a roof caused by damaged or missing shingles, flashing, or other roof components.

Roof Repair

The process of fixing specific problem areas on a roof, such as leaks, missing shingles, cracked flashing, or storm-related damage. Unlike a full replacement, roof repairs target localized issues to extend the life of the existing roof.

Roof Replacement

Roof replacement involves removing the old roofing materials down to the decking and installing a brand-new roofing system. This is recommended when a roof is beyond repair, has reached the end of its lifespan, or has extensive damage.

S-Z

Scope of Loss

A detailed report from the insurance adjuster describing what was damaged and what will be covered.

Shake Roofing

A thicker, rougher-cut form of wood roofing — typically cedar — with a more rustic appearance.

Slate Roofing

A premium roofing material made from natural stone, known for its lifespan (up to 100+ years) and classic appearance.

Skylight

A window installed in the roof to bring natural light into a home.

Soffit

The underside of the eaves, often vented to allow attic airflow.

Storm Damage

Damage caused by severe weather such as wind, hail, lightning, or falling debris.

Tear-Off

The process of removing the old roofing material down to the decking before installing a new roof.

TPO (Thermoplastic Polyolefin)

A single-ply roofing membrane commonly used on commercial buildings. It’s known for its energy efficiency, heat-welded seams, and resistance to UV rays and punctures.

Underlayment

A protective layer installed between the decking and shingles, usually made of felt or synthetic material, that adds waterproofing and protection.

Ventilation

A system of vents designed to circulate air through the attic, reducing heat buildup and moisture.

Warranty

A guarantee from the manufacturer or contractor covering defects in materials or workmanship for a specified time.

Wind Damage

Damage to roofing materials caused by high winds that can lift, crack, or remove shingles.

Wood Shake Roofing

Natural wood roofing material cut from logs, thicker than shingles, often cedar, with a rustic look.

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