Question 1

What are Thermalite blocks made of?

Accepted Answer

Thermalite blocks are primarily made from a mixture of pulverised fuel ash (PFA) along with sand, cement, lime, and a small amount of aluminium powder. This specific combination, reacting during the autoclaving process, creates the characteristic lightweight, cellular structure that gives Thermalite bricks their excellent thermal insulation, good strength-to-weight ratio, and ease of handling, making them a favoured choice for various construction projects. The inclusion of PFA also contributes to the sustainability of Thermalite blocks by utilising a recycled material.

Question 2

What are the main benefits of using Thermalite blocks in construction?

Accepted Answer

Thermalite blocks excel due to their outstanding thermal efficiency, crucial for meeting UK energy regulations and lowering heating costs. Their lightweight nature eases handling on building sites, speeding up construction without sacrificing structural soundness. Notably workable, they reduce waste – a key cost concern. Their inherent fire resistance enhances safety, a key building code priority. Many also offer good moisture resistance, vital for the UK climate. Uniquely, they often utilise PFA (a UK power station byproduct), aiding sustainability in construction.

Thermalite blocks

Thermalite Hi-strength 7N Block 440 X 215 X 100mm

Thermalite Hi-strength Block 7.3N 140mm

Thermalite 300mm Trenchblock T&G 3.6N

Thermalite 100mm Coursing Brick

Thermalite Shield Block 3.6N 140mm

Thermalite 100mm Turbo 2.9N Block

Hi-strength Thermalite Trench Blocks 7.3N 300mm

Thermalite Hi-strength Block 7.3N 215mm

Thermalite 215mm Party Wall 4N 660kg/m3