Roofing Types

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Types of Roofs

Elastomeric

Roof coatings will last an average of 7-10 years and do not withstand ponding by design. It is a water-based product and does not adhere to the roof under standing water. With silicone not only is ponding water a non-issue, but your roof restoration may last up to 20 years.

A material that can be stretched to twice its dimensions and will return to original when tension is released.

Single-Ply Roofing

Roofing membranes that are applied in one layer. Thermoplastic (TPO,PVC) and thermoset (EPDM,Hypalon) membranes are usually Single-Ply Membranes. The five basic types of single-ply membranes are (1) Ballasted, (2) Fully-Adhered, (3) Mechanically-Fastened, (4) Partially-Adhered, and (5) Self-Adhered. Seams of Single-Ply Membranes can be heat welded, solvent welded, and adhered using seam tape or other adhesives.

Single-Ply roofing is a pre-fabricated sheet of rubber polymers. Single-ply roofing is laid down in a single layer over a low or steep-sloped roof. The single-ply membrane can be loose-laid and weighted down with ballast or pavers or firmly set on the roof and attached with mechanical fasteners or adhesives.

Spray Polyurethane Foam

A monolithic spray-on roofing material with a high R-value formed when isocyanate and resin are mixed at a 1:1 ratio.

Foam roof systems can also be divided into the field-applied and factory-applied categories. Field-applied foam systems are similar to field-applied coatings, as they are sprayed on in liquid form and harden as they set on top of the roof.Factory-applied foam roof systems are formed into rigid panels and coated with a reflective coating. The foam usually gives the roof system additional insulation properties.

A fully adhered system that consists of a rigid closed-cell sprayed-in-place polyurethane foam insulation and a protective roof coating. Typical coatings include acrylic, silicone, urethane elastomers.

EPDM

Ethylene Propylene Diene Monomer. “Rubber Roof”: A thermoset with high tear strength that can be cross-linked by both peroxides and sulfur.

Shingles, Slate or Tile

Composition shingle is a type of shingle used in steep slope residential roofing and generally comprised of weathering-grade asphalt, a fiberglass reinforcing mat, an adhesive strip, and mineral granules.

All of these product types use the same concept, where pieces fit together to form a roof. Asphalt shingles are common for residential roofing applications, probably because they are relatively inexpensive and simple to install. Slate and tile products also come in a wide variety of colors, shapes, and textures and because of their heavy mass, they have thermal properties that may yield additional energy savings beyond their reflectance and emittance properties.

Acrylic Coating

A coating system with an acrylic resin base consisting of polymers of acrylic or methacrylic monomers often used as a latex base for coating systems.

Modified Bitumen

A bitumen, consisting of various flammable mixtures of hydrocarbons and other substances, that are a component of asphalt and tar and are used for surfacing roads and waterproofing, modified by one or more polymers such as Atactic Polypropylene, styrene-butadiene.

A bitumen (asphalt or tar) modified with plastic and layered with reinforcing materials then topped with a surfacing material. Like BUR’s, the radiative properties of modified bitumen (mod bit for short) are determined by the surfacing material.

Roll roofing products consist of asphalt, reinforcing layers, and in some cases, surfacing. During manufacture, a polymer (APP, or atactic polypropylene, and SBS, or styrene butadiene styrene, are the most common) is added to the bitumen while heating, which “modifies” or changes, its properties.

Built-Up Roof Membrane (BUR)

A roof membrane consisting of layers of bitumen, which serves as the waterproofing component, with plies of reinforcement fabric installed between each layer. The reinforcement material can consist of bitumen-saturated felt, coated felt, polyester felt or other fabrics. A surfacing is generally applied and can be asphalt, aggregate, emulsion, or a granule surfaced cap sheet.

(Includes asphalt and coal tar pitch) BUR consists of built-up layers of coated asphalt and insulation applied on-site and can be covered with a cap sheet (or surfacing material).

Traditional hot asphalt or coal tar built-up roofing membrane assembly consists of alternating layers of felts, fabrics, or mats saturated with bitumen during manufacturer, assembled in place, and adhered with applied layers of hot bitumen. Surfacing for the hot BUR can be aggregate embedded in hot asphalt; mineral-surface cap sheets; modified bitumen cap sheets; or smooth-surface applications or coatings.

Polyvinyl Chloride (PVC)

A thermoplastic polymer that can be compounded into flexible and rigid forms through the use of plasticizers, stabilizers, fillers, and other modifiers; rigid forms are in pipes; flexible forms are used in the manufacture of sheeting and roof membrane materials.

Metal Panels

Metal roofing products can be shaped to look like shingles, or shakes, or to fit unique curvatures, in addition to a typical standing seam configuration. They come in a variety of textures and colors, including some darker “cool” colors with special additives that allow these colors to achieve significantly greater reflectance than previous versions of the same product.

Steel and aluminum sheets are commonly used to fabricate metal roof panels.

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The experts at Silicone Roofing Houston are not only experienced in everything to do with roof coating, but also dedicated to quality and customer service! Whether you are searching for repairs or any other coating services, our team can help educate you about the options available.

To find out which option will work well for you, contact our experts at (800) 452-4406 and inquire about our roof coating systems available to suit your coating needs.

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