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Underground Car Parks


Rising land prices and rising car ownership are leading to an acute shortage of parking spaces in the UK. One solution is to build car parks below ground. Choosing to build car parks underground brings a number of benefits.

Underground Car Park

Underground Car Park Waterproofing

Underground Car Park Benefits

  • Frees up valuable land for other uses

  • “Ugly” car parks do not spoil historical landscapes

  • Can allow a car park close to existing facilities


Underground car-parks range from a single space below a house to large municipal car-parks. However, like all underground structures, they need to be protected from water-ingress.

Because concrete is the favoured construction material for underground car-parks, Drybase Crystalline Active Tanking Slurry usually offers the most cost-effective water-proofing solution, however, Drybase Tanking Slurry can also be used. On floor areas, Drybase Universal Mortar can be used to provide a combined waterproofing and trafficable surface.

Green Roofs

Underground car parks can be constructed with green roofs, allowing the space above them to be used for parks or gardens.

Get it Done

Drybase Double-Sided Sealing Tape (1.5mm)
Drybase Double-Sided Sealing Tape (10m Roll)Double-sided 30mm wide sealing tape for cavity drainage membranes.
£28.38
Drybase Crystalline Active Slurry 25kg bag
Drybase Crystalline Active Slurry (25Kg)A cementitious, ready mixed in-depth waterproofer for concrete surfaces only.
£75.99
100-pack Oldroyd Gun Plugs are used for the rapid fixing of Oldroyd membranes to concrete walls. Will fit most types of nail gun.
Oldroyd Gun PlugsRapid fixing method for Oldroyd cavity drainage membranes. Use with fixing gun (e.g. Hilti)
£80.64
£185.01
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