ULTIDRIVE Porous is a fast draining asphalt for driveways and car parks. Using the latest Porous Asphalt technology and a modified binder, the open aggregate structure allows effective drainage of driveways and car parks and ensures no surface water.

ULTIDRIVE Porous is an asphalt that is less disruptive drainage for driveways and car parks. It requires less groundwork and excavation than alternative drainage and rainwater management systems, ULTIDRIVE Porous helps to save time on site and reduce disruption for clients.

ULTIDRIVE Porous asphalt reduces direct surface water run-off to meet the requirements of planning regulations and the Code for Sustainable Homes.

ULTIDRIVE Porous is a porous asphalt for driveways and car parks. Available in 6mm for residential driveways and 10mm for small parking areas. When combined with the Tarmac ULTIFLOW range of permeable sub-base aggregates, a complete permeable solution is available. Ulticolour Porous asphalt is also available with a clear binder, pigment and colour matched aggregate for bright, long lasting coloured porous surfaces.

As a fast draining asphalt, ULTIDRIVE POROUS asphalt eliminates the problem of both standing water and ice patches that can occur in cold weather conditions.

At Tarmac, technical excellence comes as standard. Laying contractors are supported with our ULTIDRIVE POROUS laying guide.

Available as a surface and binder course, the open structure of ULTIDRIVE POROUS allows surface water to flow quickly into the permeable drainage layer.

ULTIDRIVE POROUS uses high grade aggregates and each design is engineered to ensure that the optimum binder content for the specific aggregate is selected. Together with the advanced binder technology, this ensures the long term durability of the completed surface.

ULTIDRIVE POROUS eliminates the problem of surface water and reduces the rate of formation of ice during winter months. It also avoids the tripping hazards associated with uneven block paving.

ULTIDRIVE POROUS is available in black or red as standard. However the Tarmac ULTICOLOUR range also offers porous asphalt in various other colours, for driveways and a wide range of other applications.

Exceptional drainage traditional paved surfaces are laid to shed water. This can mean that drains are quickly overwhelmed after heavy rainfall. As a result, planning rules increasingly require proposals for large paved areas to include measures to reduce the risk of localised flooding. The open structure of ULTIDRIVE POROUS means that rainwater quickly flows into the asphalt structure and is then slowly released into the ground, helping to avoid standing water and flooding.

The hydraulic conductivity of the full range of ULTIDRIVE POROUS asphalts has been tested as shown below.

ULTIDRIVE POROUS 6mm
Typical air voids of 16.0% (BS EN 12697-8)
Typical Stiffness (ITSM) of 3300MPa (BS EN 12697-26)
Typical Water Sensitivity (ITSR) of 85% (BS EN 12697-12)
Typical Hydraulic Conductivity of 8100mm/hr (min 5000) (DD229)

ULTIDRIVE POROUS 10mm
Typical air voids of 16.5% (BS EN 12697-8)
Typical Stiffness (ITSM) of 1100MPa (BS EN 12697-26)
Typical Water Sensitivity (ITSR) of 89% (BS EN 12697-12)
Typical Hydraulic Conductivity of 9700mm/hr (min 6000) (DD229)

ULTIDRIVE POROUS 20mm
Typical air voids of 23.0% (BS EN 12697-8)
Typical Stiffness (ITSM) of 1200MPa (BS EN 12697-26)
Typical Water Sensitivity (ITSR) of N/R (BS EN 12697-12)
Typical Hydraulic Conductivity of 13000mm/hr (min 6000) (DD229)