Vitrified Tile — Full Body, GVT and Double Charge

What it is

Pressed ceramic tile fired to low porosity, where the body vitrifies into a dense, largely impervious mass. The standard hard floor finish in Indian commercial and residential construction.

The types

Type	Wear surface	Best use
Full body	Through the thickness	Heavy traffic, industrial, commercial
Double charge	Thick pigment layer	General commercial, corridors
Glazed (GVT)	Printed glaze	Design-led areas, moderate traffic
Polished	Polished surface	Dry lobbies only — slip risk

Specification at a glance

Property	Typical specification
Standard	IS 15622, or EN 14411 group BIa
Water absorption	Below 0.5%
Slip rating	R-class stated for wet areas
Format	Up to 1200 × 2400mm in large formats
Rectification	Rectified edges for narrow joints
Thickness	8mm — 12mm typical for floors

What the specification must state

Tile type, not just size and colour · water absorption class · slip rating per area · rectified or non-rectified edges · joint width, since rectified tiles allow narrow joints but demand a flatter substrate · adhesive class and coverage requirement · movement joint positions.

Where projects go wrong

• Polished tile at entrances. It is dangerous when wet.
• GVT in heavy traffic, wearing through the glaze in lanes.
• Dab-fixed large formats, leaving voids that crack under point loads.
• Movement joints omitted across large floor areas, so tiles tent and pop.
• Batch and shade variation not checked before laying.

Standards referenced

Pressed ceramic tile specification under IS 15622 and EN 14411. Slip resistance classification per DIN 51130 practice.