Step 75


Underlay suitable for the stretch-fit installation of carpets.

Features and benefits:

  • Sponge rubber.
  • End use classification (to BS 5808): GD/U, general domestic use.

General information

Uniclass 2015

Pr_35_57_11_13 Cellular rubber underlaysPrimary


M50/170 Carpeting

M50/25 Carpeting

Specification data - Cellular rubber underlays

Product Reference

Step 75, TASTEP75

Standard product features

Nominal square weight:

2271 g/m².

Roll area:

15.07 m² (1.37 x 11 m).

Nominal roll weight:

34.2 kg.

Nominal thickness:

7.4 mm.


No objectionable odour.

Colour/ backing:

Gold/ unprinted Textron® backing.

Impact sound reduction (Delta Lw):

28 dB.

Emissions (US Carpet and Rug Institute):

Meets low VOC emission criteria.

Antimicrobial and mildew resistance:


Thermal resistance:

1.2 togs.

Technical characteristics:

  • Work of compression (minimum 50 J/m²): 80 J/m².
  • Retention of work of compression (minimum 40%): 65%.
  • Compression after dynamic loading: 4.6 mm.
  • Loss in thickness after dynamic loading (maximum 15%): 9.2%.
  • Loss in thickness after static loading (maximum 15%): 9.8%.
  • Resistance to cracking (not greater than 50 mm): Pass.


Hot metal nut test (tested in Interfloor laboratory): Low radius of effects of ignition.

Third party certifications

  • CRI: Green Label Plus

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