What are scalpings?
Scalpings are formed from land-based quarry waste. Scalpings are the perfect material for flattening out uneven foundations and make a fantastic subbase matter. Available in a range of sizes, including 40mm which is the most popular, scalpings are used for creating residential driveways, car parks or pathways.
What are scalpings used for?
In addition to driveways, car parks, and pathways, scalpings can also be used as the main foundations for entire buildings and other structures. Scalpings can also be used to prevent dipping and cracks in a wide range of different foundations, as well as being of use to fill potholes and sinkholes.
What are type 1 scalpings?
Type 1 scalping, is an aggregate of solid materials, not easily degraded, and of low absorbency. Scalping is used for both commercial and domestic uses of application such as bulk fill, leveling material, and a sub base for paving and paths. This type of scalping can be essential to the structural integrity of a project.
How deep should scalpings be for a patio?
It can be difficult to judge exactly how much scalpings you will need for a patio but many scalping projects have a minimum depth of 2 to 4 inches, although some projects require more. For example, a patio that's 12-foot square, with a 2-inch base of scalpings, will need 0.89 cubic yards depending on area.
How to calculate how much scalpings I need
The type of scalpings you use is the most important aspect to keep in mind and the most popular choice is 40mm scalpings as this is the size that can be applied to the majority of projects, both commercial and residential. One tonne of scalpings will typically cover about 12 metres.
How to lay scalpings
Laying scalpings can be a trying experience at first. The best way to lay scalping is to form a camber and not move too much or else all the fine granules will go to the bottom and the lumps to the top. You need to make sure you roll the sand continuously and use the road sweepings as a top dressing for stability.
How to level scalpings
Leveling scalpings is all about balance, therefore it is best to use a four to six inch rip of plywood attached to a two by four of equal length to ensure stability. Drag the scalpings, making sure that you have some grade stakes in place for your desired height, and this will ensure a smooth surface to lay your mixture on.