Insulation for underground garages and parking garages

The safe choice: parking roof solutions with highly pressure-resistant, compression-free and moisture-resistant insulation made of GLAPOR cellular glass.

Extreme requirements for the insulation of underground garages & parking decks

Drive-on areas such as underground garages, parking decks or courtyard cellar ceilings place extreme demands on the entire floor structure. This is because the insulation is subject to high mechanical loads, dynamic forces caused by maneuvering and braking, as well as moisture and chemical influences such as de-icing salt or oil.

Even small leaks in the seal or damage to the surface of the covering can lead to moisture penetrating the insulation layer. The result: heat loss, structural damage and expensive renovations – often only visible years later.

Other insulation materials such as EPS or XPS quickly reach their limits here: they are sensitive to moisture, change shape or are flammable. GLAPOR cellular glass, on the other hand, is dimensionally stable, absolutely water-resistant and non-combustible – and therefore ideal for use under traffic areas.

Insulation for underground garages and parking decks in comparison

Criterion	GLAPOR cellular glass boards	XPS
Raw material	✓ 100 % recycled glass	Petroleum based
Water absorption	✓ None (vapor-tight)	Possible through diffusion
Compressive strength	✓ Up to 1,600 kPa - also suitable for parking decks	Max. 700 kPa
Fire protection class	✓ A1 (non-combustible)	B1-B2 (flammable)
Emissions / leaching	✓ None - emission-free	Waste disperses during processing
Waste disposal	✓ Reusable, urban mining ready	Construction waste or hazardous waste
Lifespan	✓ Lifelong - across generations	Characteristics fluctuate with moistening

Products for cellular glass insulation in underground garages

GLAPOR cellular glass boards

Extremely pressure-resistant (up to 1600 kPa), non-combustible (A1) and rodent-proof. Lifelong sustainable and safe insulation with cellular glass boards made from 100% recycled glass.

GLAPOR primer

Strongly reinforcing, water-repellent and consolidating. For optimum bonding between cellular glass boards and substrate.

GLAPOR system adhesive

Strong adhesion, moisture and heat resistant. The powerful GLAPOR cellular glass boards adhesive: bonds and protects – permanently sealed in a tested system.

GLAPOR insulation holder

Stainless, easy to install, permanently secure. Stainless steel insulation holders – perfectly matched to GLAPOR cellular glass boards.

Why cellular glass is the best choice for insulating underground garages

Maximum compressive strength: permanently withstands punctual and surface loads – even with trucks, fire department crossings or forklift traffic
Zero water absorption: thanks to the closed-cell glass structure, no moisture penetration, no loss of insulation value, no need for renovation due to infiltrated sealing
Non-combustible (A1): meets the highest fire protection requirements, ideal for commercial use or public buildings
Compression-free & dimensionally stable: no creeping, no yielding, no hollow layers – permanently load-bearing construction
Compact roof structure: full-joint bitumen bonding prevents any form of underflow of water (observe the specifications of the flat roof guidelines)
Compatible with all floor coverings: whether in-situ concrete, mastic asphalt, paving or mixed systems – cellular glass remains resilient and secure in position
Ecologically convincing: made from 100% recycled glass, permanently reusable, free of harmful substances