Chemical Resistance

BS EN ISO 10545 - 13

Crazing Resistance

BS EN ISO 10545 - 11 No signs of crazing
ASTM C126 - No signs of crazing


Restoration ± 2%
New Build ± 1%
BS EN ISO 10545 – 2


ASTM C24 >2732°F (1500°C)

Soluble Salts

BS EN 772 - 5 - S2 Classification


Compressive Strength

BS EN 772-1 - >50N/mm2
ASTM C67 - >8000psi

Thermal Measurement

BS EN ISO 10545 – 8

Water Absorption

BS EN ISO 10545 - 3 - <12.0%
ASTM C67 - 24hr soak <7.9%
- 5hr boil <11.9%
- Saturation Coefficient <0.69%

Bulk Density

BS EN ISO 10545 – 3 - 2.06g/cm3

Frost Resistance

BS EN ISO 10545 - 12
ASTM C67 - 300 Cycles

Vitrified ceramic materials are unaffected by ageing, weathering, ultraviolet radiation or atmospheric pollution.

For some restoration projects or specific design requirements, it may be more important to achieve a good aesthetic match than to achieve specific physical properties and tolerances. Each project should be individually considered.

Fixing and Cleaning
The importance of employing companies that are competent or who have years of experience in such matters cannot be stressed highly enough. All too often we see some of the finest buildings having been incorrectly cleaned, causing irreparable damage to materials. The fixing of terracotta and faience should not be underestimated. It is only with experience that their natural characteristics are appreciated. We will gladly advise on both these important matters and recommend specialist companies able to carry out such work.


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