Commercial Roofing Glossary
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a
- A-component (A-side)
- Abrasion resistance
- Absorption
- Accelerated weathering
- Acrylic coating
- Acrylic resin
- Active metal (anodic)
- Adhere
- Adhesion
- Adhesive
- Adhesive bond break
- AGC
- Aged R-value
- Aggregate
- Aggregate, lightweight (LWA)
- Aging
- AIA
- Air barrier
- Air barrier accessory
- Air barrier system
- Air-impermeable insulation
- Air infiltration
- Air leakage
- Air leakage rate
- Air retarder
- Air retarder accessory
- Air retarder system
- Air space
- Aliphatic polyurethane
- Aliphatic polyurethane coating
- Alkalinity
- Alligatoring
- Aluminized steel
- Aluminum
- Ambient temperature
- Analysis
- Anodic
- ANSI
- APA
- APC
- APC/SPFA
- APP
- Application rate
- Application temperature
- Apron flashing (Includes illustration)
- Architect
- Architectural panel
- Architectural shingle
- Area divider
- Area practices
- ARMA
- Aromatic polyurethane
- Asbestos
- Asbestos felt
- ASCE
- ASHI
- ASHRAE
- Asphalt
- Asphalt, air-blown
- Asphalt core board
- Asphalt emulsion
- Asphalt felt
- Asphalt primer
- Asphalt roof cement
- Asphalt shingle
- ASTM International
- Atactic polypropylene
- Atmospheric discoloration
- Attic
- AWPA
b
- B-component (B-side)
- Backnailing
- Backrolling
- Backup plate
- Ballast
- Bar joist
- Barrel vault
- Base coat
- Base flashing (membrane base flashing)
- Base ply
- Base sheet
- Basic wind speed
- Batten
- Batten seam
- Beam
- Bearing plate
- Bentonite
- Bermuda seam
- Bitumen
- Bituminous
- Bituminous emulsion
- Blanket insulation
- Blast furnace slag
- Blister
- Blistering
- Blocking
- Blowing agent
- Bond
- Bonding agent
- Boot
- Bracing
- Bridging
- British thermal unit (Btu)
- Broadcast
- Brooming
- Btu
- Buck
- Buckle
- Building code
- Built-up roof (BUR)
- Butt edge
- Butt joint
- Button punch
- Butyl rubber
- Butyl tape
c
- C-channel
- Calendering
- California valley
- Camber
- Cant strip
- Cap flashing
- Cap sheet
- Capillary action
- Catalyst
- Cathodic
- Caulk
- Caulking
- Cavitation
- Cellular concrete
- Cellular glass insulation
- Cementitious board
- Cementitious-wood fiber deck
- Centimeter (cm)
- Centipoise (cP or cPs)
- Centistokes (cSt)
- Chalk
- Chalking
- Channel flashing
- Checking
- Chemical resistance
- Chimney
- Chlorosulfonated polyethylene (CSPE or CSM)
- Chord
- Cladding
- Cleat
- Clerestory
- Clip
- Closed-cut valley (Includes illustration)
- Coal tar
- Coarse orange-peel surface texture
- Coated base sheet
- Coated felt (sheet)
- Coating
- Code
- Coefficient of thermal expansion
- Coil coating
- Cold-applied
- Cold forming
- Cold joint
- Cold rolled
- Collar
- Color retention
- Color stability
- Column
- Combing ridge
- Combustible
- Combustion
- Compatible materials
- Composite board roof insulation
- Compound
- Compounded thermoplastics
- Compression
- Compressive strength
- Concealed plate
- Condensate
- Condensation
- Condense
- Conditioning
- Conductance, thermal (C)
- Conductivity (electrical)
- Conductivity, thermal (k)
- Conductor
- Conductor head
- Construction joint
- Contamination
- Continuity
- Control joint
- Cool roof
- Coping
- Copolymer
- Copolymer alloy (CPA)
- Copolymerization
- Copper
- Core cut (core sample)
- Cornice
- Counter-battens
- Counterflashing (Includes illustration)
- Course
- Cover board
- Cover plate
- Coverage
- CPA
- Crack
- Cracking
- Crazing
- Cream time
- Creep
- Cricket (Includes illustration)
- CRREL
- Crushed stone
- CSI
- CSPE
- Curb
- Cure
- Cure time
- Cured concrete
- Curing agent
- Curing compound
- Cutback
- Cutoff
- Cutout
d
- Dead level
- Dead-level asphalt
- Dead load
- Deck
- Deflection (bowing, sagging)
- Deformation
- Degradation
- Delamination
- Dew point temperature
- DFT
- Diaphragm
- Differential movement
- Diffusion
- Dimensional stability
- DOE
- Dormer (Includes illustration)
- Double coverage
- Double-lock standing seam
- Double tees
- Downspout
- Drag load
- Drain
- Drainage course
- Drainage mat
- Drainage system
- Drip edge
- Dry
- Dry bulb temperature
- Dry film thickness
- Dry-in (or dry-in felt)
- Drying time
- Dual-level drain
- Durability
- Dynamic load
e
- Eave (Includes illustration)
- Edge venting
- Efflorescence
- EIFS
- EIP
- Elasticity
- Elastomer
- Elastomeric coating
- Elastomeric waterproofing
- Electro-galvanized
- Electronic Leak Detection (ELD)
- Elongation
- Embedment
- Embrittlement
- Emissivity
- Emulsion
- End lap
- Envelope (bitumen-stop)
- EPDM
- Epoxy
- EPS
- Equilibrium moisture content (EMC)
- Equiviscous temperature (EVT)
- Equiviscous temperature (EVT) application range
- Equiviscous temperature (EVT) for asphalt
- Equiviscous temperature (EVT) for coal tar
- Erosion
- Ethylene interpolymers (EIPs)
- Ethylene propylene diene terpolymer (EPDM)
- EVT
- Expanded polystyrene (EPS)
- Expansion
- Expansion joint
- Exposure
- Extensive (shallow) vegetative roof system
- Exterior insulation and finish system (EIFS)
- Extruded polystyrene (XPS)
- Extrusion
f
- Fabric
- Facer
- Fading
- Fallback
- Fascia
- Fastener
- Felt
- Fiberboard
- Fiberglass base sheet
- Fiberglass felt
- Fiberglass insulation
- Fiberglass mat
- Filler
- Fillet
- Film
- Film thickness
- Filter fabric
- Fin
- Fine mineral surfacing
- Fire rating
- Fire resistance
- Fire-retardant-treated (FRT) plywood
- Fireproofing
- Fishmouth
- Flaking
- Flame retardant
- Flame spread
- Flammability
- Flammable
- Flange
- Flash point
- Flashing
- Flashing cement
- Flat lock
- Fleece
- Flood (pour) coat
- Flood test
- Flow properties
- Flowing-water test
- Fluorocarbon films
- Flute
- Flux
- FM Approvals
- Foam stop
- Force
- FPL
- Freeze-thaw cycle
- Freeze-thaw resistance
- Friability
g
- G-60 and G-90
- Gable (Includes illustration)
- Galvalume®
- Galvanic action
- Galvanic series
- Galvanize
- Galvanized steel
- Gambrel
- Gauge
- Geocomposite
- Geotextile
- Girt
- Glass felt
- Glass mat
- Glaze coat
- Gloss
- Grade
- Gradient
- Graduated slate roof
- Grain
- Granules
- Gravel
- Gravel stop
- Grout
- Growth medium
- Gusset
- Gutter
- Gypsum board panels
- Gypsum deck
h
- Hand-tabbing
- Hardboard
- Head lap
- Heat flow
- Heat flux
- Heat-fused
- Heat transfer
- Heat welding
- Hem
- Hip (Includes illustration)
- Hip roof (Includes illustration)
- Hood
- Hot-liquid-applied polymer-modified asphalt
- Humidity
- HVAC
- Hydration
- Hydrocarbon
- Hydrostatic pressure
- Hygroscopic
- Hypalon®
i
- IBC
- IBHS
- ICC
- Ice dam (Includes illustration)
- Impact resistance
- Impregnate
- In-service R-value
- Incline
- Inorganic
- Insulation
- Intensive (deep) vegetative roof system
- Interlayment
- Interlocking shingles
- IRC
- ISANTA
- Isocyanate
j
- Joist
- Joule
k
- K or k-value
- Ketone ethylene ester
- Kick-out
l
- Laitance
- Laminate
- Laminated shingles
- Lap
- Lap cement
- Lap seam
- Launderability
- Leaching
- Lead
- Leeward
- Life-cycle assessment (LCA)
- Life-cycle cost analysis
- Lift
- Lightweight aggregate
- Lightweight or insulating concrete fill (LWIC)
- Liquid-applied
- Liquid-applied built-up roof
- Liquid-applied roof membrane
- Live loads
- Long-term thermal resistance (LTTR)
- Loose-laid membrane
- Lot
- Low-slope roofs
- Low-temperature flexibility
m
- Mansard (Includes illustration)
- Marine-grade plywood
- Masonry
- Mastic
- Mat
- Mechanical damage
- Mechanically fastened membrane
- Membrane
- Memory
- Metal
- Metal flashing
- Metal rain collar
- Metal roof panel
- Meter
- Methylene diphenyl diisocynate (MDI)
- Mil
- Mildew
- Millimeter
- Mineral granules
- Mineral stabilizer
- Mineral-surfaced roofing
- Model (building) codes
- Modified bitumen
- Moisture-retention layer
- Mold
- Monolithic
- Monomer
- Mop and flop
- Mopping
- MSDS
n
- NAFA
- NAHB
- Nailer
- Nailing strips
- NBP
- Neoprene
- Nesting
- Newton (N)
- NFPA
- NIST
- Nitrile alloy
- No-cut valley
- NOAA
- Noble metal
- Nondestructive testing (NDT)
- Nonferrous metal
- Nonwoven fabric
- NRCA
- Nylon
o
- Off-ratio foam
- Olefin
- Open time
- Open valley (Includes illustration)
- Orange-peel surface texture
- Organic
- Organic felt
- Oriented strand board (OSB)
- ORNL
- OSHA
- Overburden
- Overburden dividers
- Overflow drainage
- Overhang
- Overspray
- Oxidation
- Ozone
p
- Pallet
- Pan
- Parapet wall
- Parge
- Partially attached
- Parting agent
- Pascal
- Pass
- Paste
- Pedestal
- Peel strength
- Penetration
- Perforated felt
- Perlite
- Perm
- Permeability
- Permeance
- PH
- Phased application
- Phenolic foam
- Pigment
- PIMA
- Pinhole
- Pitch
- Pitch-pocket (pitch-pan)
- Plastic cement
- Plasticizer
- Plasticizer migration
- Pliability
- Ply
- Plywood
- PMMA
- PMR
- Polyester
- Polyisobutylene (PIB)
- Polyisocyanurate foam
- Polyisocyanurate foam board
- Polymer
- Polymer-modified bitumen
- Polymeric methylene diphenyl diisocyanate (PMDI)
- Polymerization
- Polymethyl methacrylate (PMMA)
- Polyol
- Polypropylene
- Polystyrene
- Polyurethane
- Polyurethane coating
- Polyurethane foam (cellular polyurethane)
- Polyvinyl chloride (PVC)
- Polyvinylidene fluoride (PVDF)
- Ponding
- Popcorn surface texture
- Portland cement
- Positive drainage
- Pot life (working life)
- Pour coat
- Pourable sealer
- Pre-tinning
- Pressure-sensitive
- Prestressed concrete
- Primary drainage
- Primer
- Protected membrane roof (PMR)
- Protection course
- Protection mat
- PSI
- Psychrometric chart
- Puncture resistance
- Purlin
- PVC
- PVDF
r
- R-value
- Racking
- Radiant barrier
- Radiant barrier system
- Rafter
- Raggle
- Rake (Includes illustration)
- RCMA
- Receiver
- Recovering
- Reflectance
- Reflectivity
- Reglet
- Reinforced membrane
- Relative humidity (RH)
- Replacement
- Reroofing
- Resin
- Retrofit
- Ridge board
- Ridge cap
- Ridge course
- Ridge (Includes illustration)
- Ridge vent
- Ridging
- Roll materials
- Roll roofing
- Roof
- Roof area divider
- Roof assembly
- Roof cement
- Roof coating
- Roof covering
- Roof curb
- Roof overhang
- Roof slope
- Roof system
- Root barrier
- Rosin paper (specifically rosin-sized sheathing paper)
- Rubber
- Rubberized asphalt
- Run
- Rust
s
- Sacrificial protection
- Saddle
- Safety data sheet (SDS)
- Sag
- Saturant
- Saturated felt
- SBS
- Scarifying
- Screeding
- Scrim
- Scupper
- Scuttle
- SDI
- SDS
- Sealant
- Sealant foam
- Sealer
- Seam
- Secondary drainage
- Self-adhering
- Self-adhering membrane
- Self-drying roof assembly
- Self-flashing
- Self-healing
- Self-tapping screw
- Selvage
- Semi-intensive (moderate depth) vegetative roof system
- Separator layer
- Service life
- Shading
- Shear strength
- Shelf life
- Shingle
- Shrinkage
- Shrinkage crack
- SI
- Side lap
- Side-lap fastener
- Siding
- Sieve
- Silicone coating
- Single-component (coating or foam)
- Single-ply membranes
- Single-ply roofing
- Single tees
- SJI
- Skin
- Skinning
- Skylight (Includes illustration)
- Slab
- Slag
- Slate
- Slip sheet
- Slippage
- Slit sample
- Slope
- SMACNA
- Smooth surface texture
- Smooth-surfaced roof
- Snap-on cap
- Snow guard
- Snow load
- Soffit
- Soffit vent
- Softening point
- Soil stack
- Solder
- Solids content
- Solubility
- Solvent
- Solvent welding
- Spalling
- Span
- Spangle
- Special steep asphalt
- Specification
- SPF
- SPF compound
- SPFA
- Splice
- Splice plate
- Splice-tape
- Split
- Spot mopping
- Spray polyurethane foam (SPF)
- SPRI
- Square
- Squeegee
- Staining
- Stainless steel
- Standing seam
- Starter course
- Starter sheet
- Starter strip
- Steel
- Steel joist (open web steel joist)
- Steep asphalt
- Steep-slope roofs (Includes illustration)
- Step flashing (Includes illustration)
- Stick clip
- Stone wool
- Strapping (felts)
- Stress
- Strip flashing
- Strip shingles
- Stripping in
- Structural panel
- Styrene butadiene styrene copolymer (SBS)
- Substrate
- Sump
- Sump pan
- Surface texture
- Surfacing
- Synthetic rubber
t
- T-joint
- Tab
- Tack-free time
- Talc
- Tapered insulation
- Taping
- Tar
- Tear resistance
- Tear strength
- Tensile strength
- Termination
- Terne
- Test cut
- Test method
- Textural slate roof system
- Thermal barrier
- Thermal bridge
- Thermal conductance (C)
- Thermal conductivity (k)
- Thermal cycling
- Thermal expansion
- Thermal insulation
- Thermal movement
- Thermal resistance (R)
- Thermal resistance ratio (TRR)
- Thermal shock
- Thermal stress
- Thermal transmittance (U or U-factor)
- Thermoplastic
- Thermoplastic elastomer:
- Thermoplastic olefin membrane (TPO)
- Thermoset
- Thinner
- Thixotropy
- Through-wall flashing
- Tie-in (tie-off)
- Toggle bolt
- Tongue-and-groove planks
- Torch-applied
- TPO
- Traffic bearing
- Treebark surface texture
- TRI
- Truss
- Two-component system
u
- U-factor
- UL
- UL label
- Ultraviolet (UV)
- Underlayment
- Underwriters Laboratories Inc. (UL)
- Unforeseen conditions
- Uplift
- Urethane
- UV degradation
v
- Valley (Includes illustration)
- Vapor barrier
- Vapor diffusion
- Vapor migration
- Vapor pressure
- Vapor retarder
- Vapor retarder class
- Vegetative roof assembly
- Vegetative roof system
- Vegetative roof system contractor
- Vegetative roof waterproofing membrane
- Veneer
- Vent
- Verge-of-popcorn texture
- Vermiculite
- Viscosity
- Viscous
- Void
- Volatile
w
- Waffle slab
- Walkways
- Wash coat
- Water and ice-dam protection membrane (Includes illustration)
- Water cutoff
- Water-shedding
- Water-shedding roof system
- Water table
- Water testing
- Water vapor pressure
- Water vapor retarder
- Water vapor transmission
- Waterproof
- Waterproofing
- Waterproofing assembly
- Waterproofing membrane
- Waterproofing system
- Waterstop
- Wear course
- Wearing surface
- Weatherability
- Weatherometer
- Weatherproof
- Weld
- Wet
- Wet film gauge
- Wet film thickness
- Wet-out
- Wicking
- Wind screen
- Wind uplift
- Windward
- Woven valley
y
- Yield
z
- Zinc