# FL100 metallised polyamide netting

> Heavy copper- and nickel-metallised netting declared at 98 dB single layer and 132 dB two layers at 1 GHz with 0.01 Ω square resistance, the manufacturer's high-end interior product for laboratories and secure rooms.

- Canonical URL: https://emfbase.com/materials/woremor-fl100
- Collection: Shielding products
- Record id: `materials:woremor-fl100`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/materials/woremor-fl100
- Also known as: FL100

## Key values

- **Manufacturer:** WOREMOR
- **Model:** FL100
- **Material class:** Metal mesh and expanded-metal screen
- **Fields addressed:** radiofrequency, elf electric
- **Grounding required:** Yes — ungrounded installation can make things worse
- **Thickness:** 0.08 mm
- **Surface resistance:** 0.01 Ω square resistance

## Declared attenuation

Each figure is the manufacturer's declaration for the frequency and the layer or coat count named next to it. The percentage is computed from the dB value, not quoted separately.

- **1 GHz, single layer, flat sample** — 98 dB — removes 100.000% of the incident power density (1 part in 6.31 × 10^9 gets through)
- **1 GHz, two layers** — 132 dB — removes 100.000% of the incident power density (1 part in 1.58 × 10^13 gets through)

## Test method

Manufacturer states all attenuation values apply at 1 GHz, measured to ASTM D4935-10, IEEE Std 299-2006, IEEE Std 1128-1998 or ASTM A698/A698M-07, with a screening report published per material.

## Construction

Compact woven metallised polyester/polyamide netting with copper, nickel and a protective coating, 90 g/m², 90 cm wide, tensile strength 220 N/mm.

## Typical application

- Interior wall, ceiling and floor lining
- Intermediate layer bonded with conductive dispersion glue
- Laboratories, secure rooms and technical areas

## What the figure does not cover

- A 98 dB material does not produce a 98 dB room: at this level the installed result is set entirely by seams, edges, door frames, cable entries and ventilation, not by the sheet
- Requires a crease-free bond to a perfectly level surface, and textured wallpaper or rough plaster has to be smoothed first
- Conductive and therefore groundable for low-frequency electric fields, but the manufacturer declines to give a general grounding recommendation because it depends on the application
- Cut to length and non-returnable, so an installation has to be planned before ordering

## What these figures are

Every attenuation value on this page is the manufacturer's own declaration for a flat sample in a test fixture, reproduced so that products can be compared on the same terms. It is not a regulatory limit, not an independent test, and not a prediction of what a meter will read after installation — an installed shield is set by its weakest path, so the only figure that describes a room is a before-and-after measurement of that room.

## Where to buy

[EMR Shielding Solutions](https://www.emrss.com/products/fl100-metallized-polyamide-fabric) (rel: nofollow noopener)

EMR Shielding Solutions is a related company of WebKMS, which publishes EMFBase, and sells this product. The link is a stockist listing only: every figure on this page comes from the manufacturer's own documentation, and no specification, limitation or citation depends on it.

## Related records

- [Metal mesh and expanded-metal screen](https://emfbase.com/shielding/mesh): Woven or expanded metal used in wall build-ups, vents and window screens; attenuation depends on aperture size relative to wavelength, so a mesh that works at 900 MHz can leak badly at 5 GHz.
- [Shielding attenuation](https://emfbase.com/quantities/shielding-attenuation): Decibels of field reduction provided by a material. Every 10 dB is a factor of 10 in power density: 30 dB removes 99.9%, 10 dB removes 90%.
- [Shielding verification](https://emfbase.com/protocols/shielding-verification): How to prove a shielding measure worked: identical instrument, position and source conditions before and after, reported in dB as well as in absolute units.

## Sources

- `woremor-fl100` WOREMOR. *FL100 metallised polyamide netting — technical data and screening report*. https://www.woremor.com/products/fl100 — manufacturer, link checked 2026-08-12

Data licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Dataset version 2026.08.1. Retrieved from EMFBase, https://emfbase.com.

This record is reference data, not medical or legal advice. Regulatory limits, scientific guidelines and precautionary values are labelled separately and answer different questions.