Peppard building Supplies

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Tarmac's toplite GTI block



in stock for collection


Delivery: we'll get it to site when you need it, contact us for latest schedules

Product description

Tarmac's Toplite GTI blocks provide high insulation properties making them particularly suitable for external wall applications where low U-values are required. They may also be used in situations where it is important to construct walls with low self-weight.


Key features

Tarmac's Toplite GTI working dimensions

Face dimensions (mm) are 440mm long x (various widths) x 215mm high.


Toplite GTI applications

  • Inner leaf of cavity walls
  • Outer leaf of cavity walls, where cladding is to be used
  • Solid external walls, clad or rendered
  • Foundation walls - inner leaf


Toplite GTI specification

  • Mean compressive strength: 2.9N/mm²
  • Thermal conductivity: 0.11W/mK
  • Gross dry density: 460kg/m³
  • Reaction to fire: Class A1