the condition created by the overlapping intersection of three or four sheets in the membrane.
the exposed portion of strip shingles defined by cutouts.
whitish powder applied at the factory to the surface of some roofing materials (e.g., vulcanized EPDM membranes), used as a release agent to prevent adhesion of the membrane to itself.
a tapered insulation strip used to (1) elevate and slope the roof at the perimeter and at curbs, and (2) provide a gradual transition from one layer of insulation to another.
(1) the technique of connecting joints between insulation boards or deck panels with tape; (2) the technique of using self-adhering tape-like materials to seam or splice single-ply membranes.
a brown or black bituminous material, liquid or semi-solid in consistency, in which the predominating constituents are bitumens obtained as condensates in the processing of coal, petroleum, oil-shale, wood, or other organic materials.
bubbles of moisture vapor encased in a thin film of bitumen, also known as “blackberries.”
the maximum force required to tear a specimen.
the removal of all roof system components down to the structural deck, followed by installation of a completely new roof system. Tear resistance: the load required to tear a material, when the stress is concentrated on a small area of the material by the introduction of a prescribed flaw or notch. Expressed in psi (pounds force) per inch width or kN/m (kilonewton per meter width).
the strength of a material under tension as distinct from torsion, compression or shear.
the process of pulling metal coil stock between two spools under a certain pressure to help reduce side camber and potential oil canning in the coil stock caused by manufacturing and cutting processes.
the treatment or method of anchoring and/or sealing the free edges of the membrane in a roofing or waterproofing system.
an alloy of lead and tin, used to coat sheets of carbon steel or stainless steel for use as metal roofing sheet.
low-fired clay, either glazed or unglazed.
a sample of the roof system or assembly which exposes the roof deck and is used to diagnose the condition of the membrane, evaluate the type and number of plies or number of membranes, or rates of application (e.g., the weight of the average interply bitumen moppings).
a compression-resistant insulation block installed between structural steel roof panels and their supporting members to help maintain insulation R-values and reduce condensation.
the penetration of a material of high thermal conductivity (e.g., a metal insulation or roof membrane fastener) through a material of low thermal conductivity (e.g., thermal insulation); the result is a lowered thermal resistance for the assembly. The NRCA Roofing and Waterproofing Manual—Fifth Edition Glossary 1005
the time rate of heat flow through a unit area of a body induced by a unit temperature difference between bodies. In English (inch-pound) units of measurement, the number of BTUs that pass through a specified thickness of a one square foot (0.09 m2) sample of material in one hour with a temperature difference between the two surfaces of 1° F. In English (inch-pound) units it is expressed as Btu/h•ft2•F. Note 1: A thermal conductance (C) value applies to a specific thickness of a specific material. Note 2: It is mathematically incorrect to multiply or divide the thermal conductance (C) value for a specific thickness of a material to determine the thermal conductance value of a different thickness of the same material. Note 3: It is mathematically incorrect to add thermal conductance (C) values to determine overall thermal performance. If it is necessary to determine the overall thermal performance of a construction, it is appropriate to convert the individual thermal conductance (C) values to thermal resistance (R) values (i.e., R= 1/c), and then add the thermal resistance values (i.e., RT=R1, + R2 + ...).
the time rate of heat flow through a unit area of a homogeneous material in a direction
perpendicular to isothermal planes induced by a unit temperature gradient is called thermal conductivity (k or kvalue). In English (inch-pound) units of measurement, it is the number of BTUs that pass through a 1 inch (25 mm)
thickness of a 1 square foot (0.09 m2) sample of material in one hour with a temperature difference between the two surfaces of 1°F. In English (inch-pound) units it is expressed as Btu•inch/h•ft2•°F. Note 1: A thermal conductivity (k) value applies to 1 inch (25 mm) thickness of a specific material. Note 2: It is mathematically incorrect to add, multiply, or divide the thermal conductivity (k) value of a material to determine the thermal performance value of a different thickness of the same material. If it is necessary to determine the thermal performance of a specific thickness of a material, it is appropriate to convert the thermal conductivity (k) of the material to a thermal resistance (R) value (i.e., R = 1/k), and then perform the mathematical calculation.
sequence of values caused by a repetitive temperature differential due to changes in radiant energy.
the increase in the dimension or volume of a body due to temperature variations.
a material applied to reduce the flow of heat. Thermal movement: changes in dimension of a material as a result of temperature changes.
under steady conditions, thermal resistance is the mean temperature difference between two defined surfaces of material or construction that induces unit heat flow through a unit area. In English
(inch•pound) units it is expressed as °F•ft2•h/Btu. Note 1: A thermal resistance (R) value applies to a specific thickness of a material or construction. Note 2: The thermal resistance (R) of a material is the reciprocal of the thermal conductance (C) of the same material (i.e., R = 1/C). Note 3: Thermal resistance (R) values can be added, subtracted, multiplied, and divided by mathematically appropriate methods.
the stress-producing phenomenon resulting from sudden temperature changes in a roof membrane when, for example, a cold rain shower follows brilliant sunshine.
stress introduced by uniform or non-uniform temperature change in a structure or material that is contained against expansion or contraction. The NRCA Roofing and Waterproofing Manual—Fifth Edition
Pick up the phone or contact us through one of our webforms.303.798.7663
We know you are busy, and so are we, but we will fit you in to our schedule. We promise.
Your business is important to us, so we will work hard to get your roofing job started on time
Here at Armour Roofing we provide a variety of services to insure all your roofing needs and concerns are covered.
Armour Roofing offers a knowledgeable and experienced staff, quality workmanship, and exceptional service.
If you are looking for a Colorado roofing contractor you can trust, then look no more! Armour Roofing & Exteriors is right for you!
Armour Exteriors: Roofing Contractors in Denver5255 S. Rio Grande St. Unit B Littleton, CO 80120Tel: (303) 798-7663
Our team's goal and vision are to achieve 100% customer satisfaction, while providing superior workmanship, quality and the utmost integrity.
Roofing contractors Denver - Denver Roof Repairs - Denver Roofing Gallery - Denver roofing company - Roofing Materials - Contact Armour Roofing