Sunseashell® is a branded technical fabric, and its specification sheet provides a structured overview of how the material is made and how it is expected to perform. The brand name identifies a particular commercial product, but it should not automatically be treated as the name of the underlying fiber, weave, substrate, or base fabric. That distinction is important when comparing products, reviewing substitutions, or specifying materials for a project. The specification sheet describes the finished product supplied under the Sunseashell® name, including its construction, dimensions, treatment, and tested performance characteristics.
The principal measurements generally cover several categories. Finished width, reported in inches, indicates the usable dimension after manufacturing and finishing. Finished square-yard weight, reported in ounces, helps identify the material’s mass and can affect handling, installation, and overall system design. The finish or coating describes the surface treatment applied to the base fabric, such as a protective, water-resistant, or specialized coating. Strength data commonly includes tongue tear strength and grab tensile strength, both reported in pounds. These tests provide different information about resistance to tearing and pulling forces. Hydrostatic resistance indicates how well the material withstands water pressure, while the shrinkage factor indicates the degree of dimensional change that may occur under specified conditions.
Together, these values help buyers, manufacturers, designers, and engineers determine whether the fabric is appropriate for applications requiring dimensional consistency, mechanical strength, water resistance, or a particular surface appearance and feel. They also support comparisons between products and help establish suitable fabrication or installation requirements. However, listed values should generally be understood as manufacturing targets or approximate results unless the supplier explicitly identifies them as guaranteed limits. Test methods, specimen selection, sampling procedures, production batches, and environmental conditions can all influence reported measurements. For that reason, a specification sheet should be reviewed alongside the applicable test standard and current supplier documentation, particularly when performance tolerances are critical to the intended application.
The listed 46-inch finished width identifies the usable width of the fabric after the manufacturing and finishing processes have been completed. This measurement is important when planning panels, calculating pattern layouts, and estimating material yield. A 46-inch width may determine whether a component can be cut in one piece or must be seamed, while also affecting the number of panels obtained from each roll. Designers and manufacturers should use the finished dimension rather than a broader preliminary measurement when estimating consumption, because even a small difference can change cutting plans and waste allowances.
Finished width is not always the same as loom width, nominal width, or selvage-to-selvage width. Loom width generally refers to the width produced on the loom, and nominal width may be a rounded or target value. Selvage-to-selvage width includes the fabric edges, whereas usable width excludes areas that cannot be sewn, coated, printed, or incorporated into the finished product. Edge treatments, reinforced selvages, trimming, or distortion during finishing can reduce the production area. Before ordering material, confirm how the 46-inch figure is defined and whether it includes any nonusable edge sections.
The finished square-yard weight, expressed in ounces, indicates the mass of the completed fabric over one square yard. Depending on the specification, it may represent the combined weight of the base textile and its coating, finish, or treatment. A heavier material can provide greater coverage, structure, and resistance to handling, while a lighter material may offer easier folding, improved flexibility, and lower transport demands. Weight alone, however, does not establish superior performance; construction, fibers, coating chemistry, and intended use must also be considered.
When comparing products, verify whether weight is measured before or after coating and whether the stated value is an average, a nominal figure, or a permitted tolerance range. Square-yard weight can be converted to other units using the relevant area and mass conversions, provided the measurement basis remains consistent. Width and weight should be evaluated together because they influence roll length, total material consumption, shipping weight, and the final behavior of fabricated goods.
A finish or coating modifies the surface of a base fabric, often changing how it behaves during installation, use, and maintenance. A finish may improve water repellency without forming a fully continuous barrier, reduce fraying at cut edges, alter the fabric’s hand feel, or protect the surface from dirt, abrasion, and handling marks. It can also improve cleanability or support a specific end use, such as an outdoor cover, shade structure, protective enclosure, or printed textile.
A coating generally deposits a more continuous layer on one or both sides of the fabric. Depending on its chemistry and thickness, it may increase resistance to water, change stiffness, increase or reduce opacity, improve adhesion, or limit breathability. These changes can be beneficial for a particular application, but they may also affect folding, sewing, welding, printing, bonding, and long-term flexibility. The coating side should therefore be identified before fabrication, especially when only one surface is designed for exposure, adhesion, or heat contact.
Hydrostatic testing measures resistance to water pressure. The reported result indicates the amount of pressure the material can withstand before water leaks through or penetrates the structure. This provides a useful comparative measure, but hydrostatic resistance is not identical to waterproofing in every real-world situation. Seams, needle holes, flexing, abrasion, aging, contamination, and prolonged exposure can reduce practical water protection even when the unseamed fabric records a strong laboratory result.
When reviewing specifications, it is useful to identify the exact coating chemistry, the coated side, the application method, the curing process, and the test standard used. These details help determine compatibility with adhesives, heat sealing, inks, printing systems, cleaning products, and storage conditions. They also clarify whether the material is suitable for the intended environment, including expected moisture, temperature changes, ultraviolet exposure, movement, and contact with chemicals. A complete performance assessment should therefore consider both the published water-resistance value and the conditions under which the finished product will be fabricated and operated.
Tongue tear strength is a measure of the force required to continue a tear from a prepared cut. It is especially useful for evaluating resistance to tear propagation, including damage that may develop around punctures, cuts, or stressed openings. Grab tensile strength, by contrast, measures the force required to break a fabric specimen held by clamps. This result helps indicate overall load-bearing capacity in the tested direction. Tear and tensile results should not be treated as interchangeable: a material may show strong tensile performance while responding differently when an existing tear progresses.
For meaningful comparison, review both machine-direction and cross-direction values, since woven or coated fabrics may perform differently along and across the roll. The stated test method, specimen conditioning, and laboratory procedures also matter; moisture, temperature, and preparation can influence measured results. Confirm whether the data applies to coated material, uncoated fabric, or a particular production construction. The approximate shrinkage factor describes expected dimensional change after a specified treatment, such as washing, heat exposure, moisture, or manufacturing processing. Even modest shrinkage can affect pattern accuracy, seam alignment, finished dimensions, and installation fit, so it should be considered during design and fabrication.
A practical review of a Sunseashell® specification should verify the finished usable width rather than relying only on nominal roll width, confirm how the ounce-per-square-yard weight was determined, and identify the finish or coating. Compare tongue tear and grab tensile values with the demands of the intended application, and review hydrostatic results together with their test conditions. Account for the stated shrinkage factor when preparing patterns, cutting panels, joining seams, and planning installation. Before making a final material decision, request a current technical data sheet and, where feasible, evaluate a representative production sample. This process helps ensure that laboratory specifications correspond to the material, construction, and performance conditions expected in use.