A MESSAGE TO OUR CUSTOMERS: In response to COVID-19 - please click here for more information

This website uses cookies to ensure you get the best experience. By continuing to use the website, you agree that is OK.
You can read more about how we use cookies here.


polygon structured finish

148 x 148 x 9mm • 44pcs/20 kg per m2

300 x 300 x 9mm • 11pcs/20 kg per m2

TETRA DARK GREY 148mm in commercial kitchen
Technical sheet

The pyramid shapes on the surface profile means that Tetra has excellent slip resistant qualities for all areas of bare foot and shod foot traffic. It has good volume displacement properties (V4) as the profile has been designed to pierce surface debris – make it a great choice for preparation areas where heavy soiling is likely.

Also use it for:

  • Changing rooms and shower areas in swimming pools and health spas
  • Retail and light industrial unit
  • Commercial kitchens and food preparation areas
  • External walkways

See LunaPinheadMultidisc and Textured for more tiles suitable for wet areas (shod and barefoot)

  • Steel Grey

    148 x 148 DW-TESGR1515

    300 x 300 DW-TESGR3030

  • Dark Grey

    148 x 148 DW-TEDGR1515

    300 x 300 DW-TEDGR3030

  • Quartz

    148 x 148 DW-TEQUZ1515

    300 x 300 DW-TEQUZ3030

  • White

    148 x 148 DW-TEWHT1515

Reaction to fire - EN14411 Annex ZA:
Wall installation A1 / Floor installation A1FL


148 x 148 x 9mm

300 x 300 x 9mm

Surface Detail

Technical Characteristics

Shod Dry
(4S96 dry)
Shod Wet
(4S96 wet)
Barefoot Wet
(TRRL wet)
Ramp Test
V4 65 55 42 R11 C

Fully Vitrified Dust Pressed Tiles - Annex G, Group Bla

Standard Requirement Typical Test Value
148 x 148 x 9mm 300 x 300 x 9mm
Length & Width EN ISO 10545-2 +/- 0.9 mm +/- 0.6% max +/- 2.0 mm Conforms
Thickness +/- 0.5 mm +/- 5.0% max +/- 0.5 mm Conforms
Straightness of Sides +/- 0.75 mm +/- 0.5% max +/- 1.5 mm Conforms
Rectangularity +/- 0.75 mm +/- 0.5% max +/- 2.0 mm Conforms
Surface Flatness: A-B-C +/- 0.75 mm +/- 0.5% max +/- 2.0 mm Conforms
Surface Quality A minimum of 95% of the tiles will be free from visible defects Conforms
Water Absorption % by Mass EN ISO 10545-3 < 0.5% Group Bla Fully Vitrified
Breaking Strength ≥7.5mm EN ISO 10545-4 >1300N Conforms 3583N
Modulus of Rupture EN ISO 10545-4 N/mm2 N Minimum 35 N/mm2
Individual minimum 32
Resistant to Deep Abrasion of Unglazed Tiles EN ISO 10545-6 Maximum 175vmm3 Between 22.1mm / 101vmm3 and 23.8mm / 111vmm3
Thermal Shock Resistance EN ISO 10545-9 Cycled 10 times between temperature of 15o & 145o C Fully Resistant
Frost Resistance EN ISO 10545-12 100 Freeze Thaw Cycles No Damage
Resistance to Household Chemicals and Swimming Pool Salts EN ISO 10545-13 Minumum UB UA No Visible Effects
Low Acids & Alkali ULA No Visible Effects
High Acids & Alkali UHA No Visible Effects
Surface Hardness
MOHS UNE 67-101-92-2012
>6 >6
Reaction to Fire
EM14411 Annex ZA, classified without testing (CWT)
93/68/EEC When installed on walls A1
When installed on floors A1FL
Non combustible
Recycled Content Pre Consumer 4% Post Consumer 100%
Environmental Products do not contain VOCs

Architects, specifiers and design professionals:

For further information, advice or guidance on choosing Dorset Woolliscroft products please contact us

TETRA DARK GREY 148mm in commercial kitchen

TETRA DARK GREY 148mm in commercial kitchen