There are two types of finish for an exposed aggregate driveway and the construction process is the same for both.

Surface Dressed – this method is used to keep costs to a minimum and is popular on smaller projects such as garden paths and patios. The chosen decorative aggregate is pressed into the body of the recently poured concrete and creates a textured and decorative surface.

Washed To Expose – this method is used for heavy-duty applications such as driveways, garage forecourts and parking bays. The chosen decorative aggregate is incorporated within the concrete mix and is then exposed by jet washing or use of a stiff broom and hose. The aggregate is held within the poured concrete and creates a more durable surface with the same choice of colours and textures.

Construction

• Excavate to a minimum depth of 250mm below finished level and remove all waste materials from site
• Install all necessary form work and shuttering to create outline of exposed aggregate driveway or patio
• Lay PIFA 1200 Damp Proof Membrane with a 350mm overlap on taped joints
• Lay 150mm of Dtp Type 1 road-stone sub-base compacted to falls and levels as required
• Lay 100mm of Class C30 fibre-reinforced mass concrete in bays as required and finish according to choice of Surface Exposed Aggregate or Washed Exposed Aggregate