Call Us Today: 330-477-9885 Contact Us Home Services FAQs About Us Services Our estimators will work with you on the best possible solution that fits your building needs. EPDM 1. Fully Adhered 2. Mechanically Attached 3. Ballasted TPO 1. Fully Adhered 2. Mechanically Attached PVC 1. Fully Adhered 2. Mechanically Attached Built Up Roof 1. Gravel Surface 2. Smooth Surface Modified SBS 1. Granulated Cap Sheet 2. Smooth Cap Sheet 3. Cold Applied 4. Hot Applied Metal Roofs 1. Snap on Standing Seam Roof 2. Tee lock Standing Seam 3. Inter-Lock Standing Seam 4. Double Lock Standing Seam Roof Coatings We offer a variety of different Coating System that may be an option. Commercial Roof Terminology A ________________________________________ Abrasion Resistance: The ability of a membrane to resist abrasion caused by foot traffic, wind-blow particles, or the movement of equipment Absorption: The ability of a material to accept quantities of gases or liquids Adhesive: A substance used to adhere materials together Aggregate: Any granular material including crushed stone, slag, or gravel Alligatoring: The cracking of surface bitumen on a built-up roof resulting from expansion or contraction Application Rate: The quantity (measured in mass, volume, or thickness) of material applied per unit area Asphalt: A brownish-black mixture of bitumens obtained from nature or through petroleum processing B ________________________________________ Ballast: A material such as aggregate which employs its mass and the force of gravity to hold single-ply roof membranes in place Base Flashing: Plies or strips of roofing membrane used to seal the roof at the horizontal-to-vertical intersections Base Ply: The bottommost ply of the roofing membrane Base Sheet: A material used as the first ply on some low-slope system Bitumen: A general term for a semi-solid mixture of hydrocarbons Blister: A raised portion of the roofing membrane resulting from pressure buildup caused by trapped gases in the membrane Blocking: The wood between the deck and the membrane Buckling: Warping or wrinkling of the roof membrane C ________________________________________ Cant Strip: A beveled strip of wood used under flashings to modify the point at which the roofing or waterproofing membrane meets any vertical element Cap Sheet: A granule-surfaced felt that is used as the top ply of a built-up roofing membrane Caulking: A waterproofing sealant used for filling joints Compressive Strength: A property of a material to resist deformation caused by compression Condensation: As it relates to water, the conversion of water vapor to a liquid as the temperature drops Coping: The covering on top of a wall that is exposed to weather Counterflashing: Metal or elastomeric sheeting secured on or into a wall, curb, pipe, rooftop unit, or other surface to protect the upper edge of the base flashing Cricket: A small, elevated area used to divert water from a horizontal intersection of the roof with a chimney, wall, expansion joint or other projection Curb: A raised member used to support roof penetrations Cure: A process where the material forms a permanent molecular bond after being exposed to a chemicals, heat, or pressure D ________________________________________ Dead Level: Absolute horizontal; no slope, flat Deck: The structural component of the roof of a building to which the waterproofing system is applied Delamination: Separation of the roofing plies Dimensional Stability: The change in a material that results from exposure to elevated temperature Downspout: A vertical pipe for draining water from roof gutters Drain: An outlet designed to capture or direct the flow of water from a roof Drip Edge: A metal flashing or other overhanding component intended to control the direction of dripping water E ________________________________________ Edge Stripping: Membrane flashing strips used to cover a joint between flashing and built-up roofing Elastomeric: The elastic rubber-like properties of a material Elongation: The ability of a roofing material to be stretch by the application of force Exhaust Ventilation: Air that is vented from the roof cavity Expansion Joint: A structural separation between two building elements that allows for free movement between the elements to the roofing or waterproofing system F ________________________________________ Fabric: A woven cloth composed of filaments, threads or yarns and used to reinforce certain membranes Fasteners: A wide array of mechanical fastening devices including clips, screws, or bolts Felt: A fabric manufactured from vegetable, asbestos, or glass fibers in the presence of mechanical work, moisture or heat Field Seam: A splice or seam made in the field where overlapping sheets are joined together using an adhesive, splicing tape or heat/solvent welding Fishmouth: A membrane defect caused by wrinkling or shifting of ply sheets; edge wrinkle Flaking: Detachment of small pieces of the coating Flashing: Weatherproofing components used to seal roof system edges at perimeters, walls, expansion joints, valleys, drains, and other places Flood Test: Testing procedure using a controlled amount of water to determine the effectiveness of the waterproofing system G ________________________________________ Gauge: A metal thickness measurement Granule: Aggregate commonly used to surface cap sheets, shingles, and other surfaced roof coverings Gravel: Coarse, granular aggregate used in a bitumen aggregate on built-up roofs Gutter: A channeled component used to contain water runoff from the roof to the downspouts H ________________________________________ Heat Welding: Method of melting or fusing together sheets of thermoplastic and polymer modified bitumen Hem: Edge created by folding metal back on itself HVAC: Heating, ventilating, and air conditioning equipment I ________________________________________ Ice Dam: A mass of ice formed near transitions from warm to cold roof surfaces Infrared Thermography: Roof analysis technique used to measure the temperature gradient of a roof surface to locate areas of moisture Insulation: Materials used to reduce the flow of heat Intake Ventilation: Ventilation system that allows for the flow of fresh air into the building J ________________________________________ Joist: Timber, metal or wooden beams arranged parallel to each other to support a floor or ceiling L ________________________________________ Laminate: To join layers of material together via heat and/or pressure Lap: The part of a roofing membrane that covers any portion of another section of membrane and is then sealed to form a watertight connect Low-slope roofs: A category of roofs that have a slope at or less than 3:12 (14 degrees) M ________________________________________ Mastic: Adhesive material used as a cementing agent for securing waterproofing membrane Mat: A thin layer of fiber which reinforces the membrane Mechanically fastened membrane: Membranes that have been attached at defined intervals to the substrate using fasteners or other mechanical devices Membrane: A flexible or semi-flexible sheet of thermoset, thermoplastic, or modified bituminous material whose primary function is waterproofing Modified Bitumen: A bitumen modified by one or more polymers Mopping: The application of hot bitumen with a mop to the substrate of a bituminous membrane N ________________________________________ Nailer: A piece of dimensional lumber or plywood which serves as a receiving medium for the fasteners Night Seal: A temporary seal used during construction to protect the roofing assembly from water penetration O ________________________________________ Open time: The period of time after an adhesive has been applied and an effective bond can be achieved by joining two surfaces Overflow Drainage: Component of a roof drainage system that protects the roof against damage in the event that the primary drainage system is blocked Ozone Resistance: A property of a material to resist the effects of ozone exposure P ________________________________________ Parapet Wall: Perimeter wall that extends above the roof surface Partially Attached: A method of roofing assembly in which the membrane has been spot affixed to a substrate using an adhesive or mechanical device Penetration: Any element (e.g., pipes, conduits, HVAC supports) that pass through the roof Pigment: A compound used to impart color Pinhole: A tiny hole in the roof coating, film, foil, membrane or laminate components Pipe Boot: Pre-fabrications flashing component used to flash around a circular penetration Pitch Pocket: A flange, open-bottomed metal enclosure placed around a penetration and filled with hot bitumen or flashing cement Ply: A layer of felt in a built-up roof system Pond: A surface which is incompletely drained Positive Drainage: Drainage condition in which all considerations during the design process have been provided to ensure drainage of the roof within 48 hours Pourable Sealer: A two-part sealer used at difficult-to-flash penetrations Primer: A substance intended to prepare the roof surface for accepting a coating or improving the overall adhesion of the coating to the substrate Protection Mat: A mat used to shield or protect one roof system component from another R ________________________________________ Re-covering: The process of covering an existing roof system with a new system Reflectivity: The ability of a material to reflect light and heat Reinforced Membrane: A membrane reinforced with felts, mats, fabrics, or other fibers Roof Curb: A raised frame used to mount mechanical units on the roof Rubber: A material, at room temperatures, is capable of recovering substantially in shape and size from large deformations S ________________________________________ Scupper: A drainage component consisting of an outlet through a wall, parapet wall, or raised roof edge lined with a soldered sheet metal sleeve Sealant: A material that is used as an adhesive to form a seal Sealant Backing: A material place in a joint before applying sealant Seam: A joint formed by joining two separate sections of material Self-Adhering Membrane: A membrane that adheres to the substrate and overlaps without the use of additional adhesive Shrinkage: A decrease in one or more dimensions of an object Single-ply membranes: Roof membranes that are applied using just one layer of membrane material Skylight: An opening in the roof that is glazed with a transparent or translucent material that allows light to diffuse into the space below Snow load: The load due to the weight of the snow on a roof Soffit: The exposed undersurface of any exterior overhanging section of a roof eave Solvent: Any liquid used to dissolve another material Splice: Joining of overlapping materials Split: A tear in the membrane resulting from tensile stresses Steep-Slope Roofs: A category of roofing systems installed on slopes greater than 3:12 (14 degrees) Surfacing: The top layer of a roof covering T ________________________________________ Tear Resistance: The load required to tear a material when the stress is concentration on a small area of the specimen by the introduction of a prescribed flaw Termination: A method of anchoring the free edges of the membrane to the roofing system Thermoplastic: A material that softens when heated and hardens when cooled U ________________________________________ Ultraviolent: A form of radiation that is potentially damaging to certain chemical compounds in the roofing membrane V ________________________________________ Vapor Retarder: Material installed to restrict the flow of water vapor through the roofing assembly Vegetative Roofs: A roof system composed of a waterproof substrate and an area of planting W ________________________________________ Water Absorption: The amount of water absorbed by a material within a specific period of time Waterproof: A property of a material to resist water Weep Holes: Small holes whose purpose is to permit drainage of water that accumulates inside a building component Weld: Joining of metal together by heat fusion Request Estimate We would be very happy to provide you with an estimate for your project. Please either call us at 330-477-9885 or fill out this simple form and we will get right back to you Click Here HOBS Roofing HOBS Industrial Roofing & Sheet Metal, Inc. 1423 Harrisburg Rd. N.E. Canton, Oh. 44705 Phone: 330-477-9885 Fax: 330-477-9865 We are an Equal Opportunity Employer Site by DBM Management, Inc.