Strong, Efficient, and Easy to Install Below-Ground Solution

The Thermalite Hi-Strength 7 Tongue & Groove Aircrete Trenchblock offers robust strength and thermal efficiency for foundation and below-ground construction. Its precision tongue & groove design ensures quick, secure fitting with less mortar, speeding up installation and improving build quality.

Features:

• High compressive strength of 7.3N/mm² for durable foundations
• Tongue & groove joints for tight interlocking and reduced mortar use
• Excellent thermal and sound insulation for energy-efficient, quiet buildings
• Lightweight for easier handling and faster site work
• Fire-resistant to meet safety standards
• Eco-friendly, reducing CO₂ emissions over the building’s lifetime

Perfect For:

• Below-ground construction and trench foundations

• Residential and commercial building projects requiring strong, insulated foundations

Why Choose Thermalite Hi-Strength Tongue & Groove Trenchblocks?
They combine strength, sustainability, and fast installation for a reliable foundation solution that supports energy efficiency and safety.