Road Surgeons Pty Ltd

Quality & Service Assured
For The Best in Asphalt &
Pavement Maintenance

(02) 8065 8011

QDP Spraying

QDP (Quick Dry Primer) is a special fast drying (bitumen or hydrocarbon solvent based) primer for the priming of concrete roads or concrete bridge decks, which are required to be surfaced with a Bitumen Spray Seal or Hot mixed asphalt.

A traditional bitumen emulsion does not bond properly to concrete and so any subsequent Bitumen Spray Seal or hot mixed asphalt will not bond properly.

QDP Spraying, with its hydrocarbon solvent ensures the ADHESION of the bitumen spray seals or the hot mixed asphalt to any concrete pavement.

We Provide This QDP Spraying Service For Sydney With Expertise.

“We focus on offering our customers the best possible solutions, service and value for money.”

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Line Marking

Sydney Line Marking Machine - Line Marking

Road Surgeons offers a comprehensive line marking service for Sydney including; Line marking, line removal, commercial/factory/warehouse line marking, car park line marking.

Car Park Line Marking

  • Loading bays
  • Disabled bays
  • Business logos
  • Reserved
  • Lane creation
  • Bollard highlighting
  • Number and letters

Road & Freeways

  • Laneways
  • Speed humps
  • Zebra Crossings
  • Raised pavement markings
  • No parking zones

Commercial & Factory

  • Loading zones
  • Safety walkways for factories
  • Storage areas

Sports Fields & School

  • Professional Clubs
  • Netball courts
  • Basketball courts
  • Handball courts
  • School quads
  • Gymnasiums
  • Football pitches
  • Cricket pitches

Line marking is necessary for clear delineation of parking areas and the direction of traffic, in any busy or shared road or pavement.


We Provide:

  • The Highest Quality Line Marking Services
  • Safe Delivery
  • The Use Of Premium Equipment & Materials

We pride ourselves in our experience and ability to fulfil our client’s line marking needs.

We complete all of our work safely and efficiently, in the highest quality and within the time frame and budget that was agreed upon.

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Concrete Slab Lifting in Sydney

Slab Jacking – Pressure Grouting – Mud Jacking – Lifting – Stabilising

When a Concrete Pavement is not properly sealed at the joints, water can enter the pavement sub base, which leads to softening. This leads to subgrade failure, due to the pumping action from traffic loads. This pumping then develops voids under the slabs which in turn cause slabs to become unstable and even sink.

Slab Jacking or Stabilising corrects the differences in the levels between concrete slabs which stabilises (stops from moving) rocking slabs.

This extends the pavement life and defers the much more costly complete replacement.

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Joint Sealing

What is joint sealing?

Joint sealing is where we seal the joints in concrete pavements.

Why do we seal joints?

Joint Sealing is done to prevent the ingress of surface water, below the concrete slabs, into the substructure of the pavement.

Water infiltration is “the beginning of the end” for pavement.

Water that penetrates to the sub base of the pavement will allow it to soften and become unstable. Joint Sealing of a concrete slab also prevents the joints filling with non compressible matter, which will prevent expansion joints from allowing movement, thus shifting stresses to other points in the slab which eventually leads to irregular cracking.

Unsealed joints may allow a concrete slab to sink and crack.

If utilized early enough, joint sealing can defer, and even eliminate the need for more expensive maintenance; such as Slab Jacking or Stabilizing (Mud Jacking, Lifting or Pressure Grouting), or in the worst case, the costly complete reconstruction of the concrete slabs.

The use of joint sealing on a concrete pavement prior to an asphalt overlay slows and greatly reduces reflective cracking on the new pavement layer.

What type of joints are suitable for sealing?

Longitudinal joints (construction, control, or expansion joints).

Transverse joints (construction, control, or expansion joints).

Joint preparation?

Joints must always be dry.

Depending on; the type of joint, desired service life, serviceability, and budget, joint preparation may involve any combination of the following:

  • Weed Poisoning
  • Raking or Ripping
  • Power Routing
  • Sawing
  • Blowing Out (with compressed air)
  • Priming

Excessively deep joints may also be packed with backing rod prior to sealing.

As a minimum, joints are always blown with compressed air to clean the joint of loose material, which may prevent bonding of the sealant.

What type, of materials are suitable for joint sealing?

For the best performance and cost effectiveness, a hot applied rubber modified bitumen sealant will always yield the best results.


All Concrete Pavement Management Systems should include a suitable joint sealing program. This allows greater utilization of your pavement maintenance budget.

Joint Sealing works effectively as both a preventive and routine maintenance.

With an effective joint sealing regime you will be able to prevent water from deteriorating your pavement sub-bases and prevent the need for more expensive Slab Jacking, Stabilizing (Mud Jacking, Lifting or Pressure Grouting) and reconstruction.

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