Gulleys, manholes and drainage solutions


Ironworks are metal works that are present in our transportation systems, they come in many different shapes and sizes and provide many different functions and purposes.

These may include the following examples:

  • Gulleys (drains)
  • Manholes
  • Supports for bridges
  • Railways
  • Stop-tap covers
  • Inspection chamber covers

These are only a few examples but they are many more that all are present in our infrastructure that keep our day to day transportation and movement constant and help with drainage in most aspects of construction and engineering.

Ironwork After Care

Although extremely sturdy and hardwearing, in some cases your iron works can sink due to insufficient installation, heavy traffic and general wear & tear over a prolonged period of time.

Blackoak Surfacing can fix this problem, by excavating the areas, in-filling it with hard core, ensuring sufficient compaction and re-creating a solid base for the steelworks to be re-bedded and relayed upon.

The iron works should be then set sent on quick setting mortar to provide extra strength.

Iron work includes setting and raising manholes that have dropped or become unstable, as well as grates and tap covers. Getting a perfect level for surfacing and re-installation of ironworks is imperative, that’s why we use laser levels to create accurate heights and levels, which maintain the flow of the area for drainage reasons.

Ironworks – Core Values


When adjusting iron works you need to know your finish surface course as this will be the height of your iron work


All levels of the surface area should be checked providing you with information of low and high points within the area


It is very important your levels are correct for Ironworks. This can be done accurately using a laser level


Once your low points are clear, a plan can locate the gullies in order for them to collect the surface water adequately and direct into the drainage system


All gullies are usually bedded on a quick setting mortar to correct heights string lines are often used for guides


Once the surface course has been laid, gullies should be checked to ensure they are working correctly