Grade IV is a 1300gsm PVC-coated tensile membrane fabric built on a PET (polyester) scrim, engineered for large-span roof systems and architectural membrane structures. It balances high tensile and tear strength with 8–12% translucency and a 15–20 year service life, making it a practical choice for architects, structural engineers and membrane contractors specifying permanent tensile roofs.
PET Scrim PVC Tensile Membrane Fabric 1300gsm
Product Overview and Key Features
Grade IV sits in the heavy-weight band of coated tensile fabrics. The 1300gsm composite weight reflects a substantial PVC coating over a woven PET base, which is what delivers the mechanical performance architects rely on in tensile design.
- High tensile strength: 7450–6400 N/5cm across the tested direction range, supporting structural membrane design with meaningful safety margins.
- Tear resistance: 1400–1100 N, helping the membrane resist crack propagation around clamps, edges and cable points.
- Controlled translucency: 8–12% light transmission gives diffuse daylight under the roof without the glare of glazing.
- Long design life: a 15–20 year service life band, suited to permanent rather than temporary structures.
- PET scrim base: a dimensionally stable woven polyester carrier for the PVC coating.
Technical Specifications
| Property | Value |
|---|---|
| Grade / Model | Grade IV |
| Scrim material | PET (polyester) |
| Weight | 1300 gsm |
| Tensile strength | 7450–6400 N/5cm |
| Tear strength | 1400–1100 N |
| Translucency | 8–12% |
| Service life | 15–20 years |
| Width | Custom |
| Thickness | Custom |
| Color | Custom |
| Adhesion | Custom |
| Flame retardancy | Custom |
Parameter and Performance Notes
The tensile and tear figures are given as ranges because warp and weft directions differ in a woven PET scrim; the higher value in each pair should be read as the stronger axis. Design calculations should use the lower figure for the governing direction unless project-specific test data is supplied.
Translucency of 8–12% is a light-transmission band, not a fixed number; actual daylight under the membrane depends on coating formulation, color and roof geometry. The 15–20 year life band assumes correct detailing, tensioning and normal maintenance in a suitable climate. Thickness, adhesion and flame performance are not fixed in this grade and are confirmed per order. Grade IV is the reference designation for this 1300gsm construction.
Application Scenarios
- Large-span venues: stadium concourses, arenas and exhibition halls where long clear spans and daylight are required.
- Membrane structures: tensile roofs, canopies, walkway covers and entrance features.
- Architectural shading: semi-translucent roof skins over public and commercial spaces.
- Permanent installations: projects where a 15–20 year life band justifies a heavier coated fabric.
Grade IV is intended for engineered tensile work rather than temporary covers; connection design, cable and clamp detailing, and patterning should be handled by qualified membrane engineers.
Customization and OEM/ODM
Kezhibo New Materials can discuss project-specific options on request. Available possibilities include:
- Roll width and roll length to suit cutting and patterning
- Coating color and surface finish
- Flame-retardant formulation, subject to confirmation
- Topcoat or surface treatment options for dirt shedding
- Private-label packaging and OEM/ODM supply arrangements
All options are subject to technical feasibility and are confirmed in writing at quotation stage; they are not implied by the base Grade IV specification.
FAQ
How long does Grade IV last? The specified service life band is 15–20 years, assuming correct design, installation and maintenance.
Is it flame retardant? Flame performance is not fixed in this data set. Contact us for the flame-retardant option and the relevant documentation.
What translucency can I expect? 8–12% light transmission, depending on color and coating; confirm with a sample for your project.
Can you supply custom widths and colors? Yes, width, thickness and color are custom options; contact us with your project requirements.
Do you provide samples and what is the MOQ? Samples and minimum order quantities are arranged per project; contact us for details.
