ASTM tests: ASTM tests are industry-standard testing methods created by ASTM International to assess the quality and performance of materials, products, and systems. They provide consistent, agreed-upon procedures that help ensure reliability, safety, durability, and mechanical strength
Fungi resistance: Resistance to visible mold/mildew growth on the surface.
Granule retention: the ability of asphalt shingles to hold and retain their granules against abrasion/weather.
Granulock™ Technology: Liqua-Roof’s proprietary resin–granule bonding system that secures and encapsulates roofing granules to significantly reduce granule loss. Unlike traditional shingle manufacturing (where granules are pressed into hot asphalt and left exposed) Granulock™ Technology bonds granules in place with a protective resin layer, improving retention by up to 90% compared to new, uncoated shingles.
Hail resistance: The ability of an asphalt shingle to withstand hail without cracking, fracturing, or losing granules, measured using the ASTM UL 2218 impact resistance test, which simulates hail strikes of varying sizes and velocities, ensuring the shingle can maintain its protective integrity under impact.
Impact resistance: The measure of how well a roofing material can absorb and withstand sudden impacts (like hail strikes) without cracking, fracturing, or dislodging granules that protect the shingle
Liquid-applied roofing: A multi-coat, waterproofing membrane (typically elastomeric, acrylic, silicone, polyurethane, bitumen, or asphalt emulsion) applied onto flat roofing systems, such as EPDM, TPO, PVC, modified bitumen, metal, and concrete.
Nano-ceramic roof coatings:: residential roof paint/coating formulated with nano-ceramic particles or ceramic dust suspended in a resin binder. The ceramic additive offers improved impact resistance compared to oil-based rejuvenators, but these coatings do not add a new granule layer to shingles and require reapplication.
Permeability: the ability of a substrate to allow water vapor to escape. In the context of roof paints, coatings, and sealers, it refers to how well the coated surface can “breathe,” preventing trapped moisture that can lead to blistering or peeling.
Perm rating: the measure of vapor flow through a layer.
Roof paints/coatings: often used interchangeably with liquid-applied roofing. Roof paints and coatings are liquid-applied membranes that create a protective film over a roof to improve water-resistance, seal minor cracks, and restore surface reflectivity. Flat-roof coatings (such as acrylic, silicone, polyurethane, or asphalt emulsions) are typically used on commercial or low-slope systems like modified bitumen, TPO, PVC, or EPDM.
Roof Rejuvenation/Rejuvenator: A penetrating oil treatment that restores lost oil and flexibility to dry, brittle shingles. Roof rejuvenators do not add a new granule layer to shingles and require reapplication.
Roof resurfacing: A roofing process that adds a new, high-build granule layer to the existing roof surface to restore protection, improve durability, and extend roof life. Unlike conventional roofing treatments (such as roof/shingle rejuvenators, paints, coatings, sealers, or liquid-applied systems) roof resurfacing rebuilds the protective granulated layer rather than penetrating, sealing, or covering the roof. Liqua-Roof is the first patented resurfacing system designed for both asphalt shingle roofs and flat roofs.
Roof Sealer: A type of roof paint or coating (often rubber, silicone, or polyurethane) applied to improve a roof’s water resistance. Roof sealers do not add a new granule layer to shingles and typically require periodic reapplication.
Shingle restoration: An umbrella term for roof maintenance treatments intended to improve the condition of asphalt shingles without replacing them. These products (including oil-based rejuvenators and roof paints, coatings, and sealers) typically replenish lost oils, enhance flexibility, or add surface protection to improve water resistance. While they may slow deterioration and modestly extend service life, they require periodic re-application and do not rebuild granule volume or restore shingles to their original manufactured performance.
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