How Many Slabs Do I Need?

Creating a delightful patio space is like extending your living area into the great outdoors—a sanctuary where you can relax, entertain, and savour the beauty of nature. But before you embark on the journey of transforming your vision into reality, there lies an important question:

How do you calculate the size of your patio and determine the number of slabs required?

Whether you are embarking on a grand patio project or simply looking to refresh your existing outdoor oasis, this article will guide you through the process of precisely measuring your space, accounting for key factors, and unlocking the secrets to achieving the perfect patio dimensions while ensuring an optimal slabs layout. 

Calculating the Area of your Patio

When it comes to calculating the area of your patio, the process can vary depending on the shape of the space. Let's start with the simpler shapes, such as square and rectangular patios, before exploring methods for more complex areas.

Square or Rectangular Patios:

For a square or rectangular patio, the calculation is straightforward. You need to measure the length and width of the space and multiply the two values together. For instance, if your patio is 5 metres long and 4 metres wide, the area can be calculated as follows:

Area = Length × Width

Area = 5 metres × 4 metres

Area = 20 square metres

With this calculation, you have determined the size of your square or rectangular patio, enabling you to plan accordingly for furniture placement and landscaping elements such as pots and planters and fire bowls.

Add on 10% extra to make an allowance for cuts and any breakages that may occur when laying your paving, so in this example, 10% extra is 2 square metres, so you will need at least 22 square metres of paving. 


Complex Shapes:

When dealing with more intricate patio shapes, such as L-shaped or irregular areas, breaking them down into smaller, manageable sections is the key to accuracy. Here's a step-by-step approach to calculating the area for complex shapes:

  1. Divide and Conquer: Divide the complex shape into smaller, regular shapes that are easier to measure, such as squares, rectangles, triangles, or circles.

  2. Measure Individual Sections: Determine the dimensions (length and width) of each smaller shape within the complex area. Apply the relevant area calculation formula for each shape.

  3. Add Up the Areas: Sum up the areas of all the smaller shapes to obtain the total area of the complex patio.

For example, suppose you have an L-shaped patio with one rectangular section and one triangular section. To calculate the total area, follow these steps:

a. Measure the rectangular section: If the length is 6 metres and the width is 4 metres, calculate the area using the formula mentioned earlier: Area = Length × Width. Area = 6 metres × 4 metres = 24 square metres.

b. Measure the triangular section: If the base of the triangle is 5 metres and the height is 3 metres, use the formula for the area of a triangle: Area = (Base × Height) ÷ 2. Area = (5 metres × 3 metres) ÷ 2 = 7.5 square metres.

c. Add up the areas of both sections: Total Area = Area of Rectangular Section + Area of Triangular Section. Total Area = 24 square metres + 7.5 square metres = 31.5 square metres.

Remember to add on 10% extra to make an allowance for cuts and any breakages that may occur when laying your paving, so in this example, 10% extra is approx. 3 square metres, so you will need at least 34.5 square metres of paving. It is worth noting that when laying paving that requires more cuts than usual, such as in this example where a triangle shape is required, it is good practice to allow even more extra paving for wastage as you will not be able to use every offcut. 

By breaking down complex shapes into simpler ones and summing up their respective areas, you can accurately determine the overall size of your patio, helping you plan for appropriate materials and ensuring a harmonious design.


Calculating the Area of a Patio with a Curve

When dealing with a patio that features a curved or irregular shape, determining the area requires a similar approach.

  1. Divide the Curve into Smaller Segments: Break down the curved shape into a series of smaller straight segments. The more segments you use, the more accurate your calculation will be. The length of these segments will depend on the complexity of the curve and your desired level of precision.

  2. Approximate the Segment Shape: For each segment, determine the closest regular shape that closely matches the segment's size and dimensions. This could be a rectangle, triangle, or even a combination of shapes.

  3. Calculate the Area of Each Segment: Apply the appropriate formula to calculate the area of each segment. For rectangles, use the formula: Area = Length × Width. For triangles, use the formula: Area = (Base × Height) ÷ 2.

  4. Sum Up the Segment Areas: Add up the areas of all the segments to obtain the total area of the curved patio. This summation will provide an approximate value for the patio's overall size.

By breaking down the curve into smaller segments and approximating their shapes, you can calculate the area of a curved patio, enabling you to plan for the right number of slabs and materials needed to bring your patio vision to life.

Remember to add on 10% extra to make an allowance for cuts and any breakages that may occur when laying your paving. It is worth noting that when cutting curves, it is unlikley you will be able to use each offcut, so by segmenting the area into rectangular shapes, the surplus measurements should take the extra wastage into account. 

What Unit of Measurement Should I Use?

When it comes to measuring the area of your patio, it's essential to use a consistent unit of measurement for accuracy and ease of comparison. Throughout our website, we show product coverage in square meters as the standard unit of measurement for patio coverage. Square metres provide a clear and straightforward representation of the area, regardless of the shape or size of your patio. By using square metres, you can easily compare different patio options, so, whether you're calculating the area of a square, rectangle, or even a curved patio, utilising square metres as your unit of measurement will ensure consistency and clarity throughout the process. If you're really stuck when using metric measurements, feel free to contact us and we'll help guide you. 

Try it Out

Before proceeding with the installation of your patio, it is highly recommended to mark out the calculated area on the ground. This step is crucial in ensuring that the dimensions align with your vision and accommodate all the desired elements, such as furniture, pathways, and landscaping features. Using stakes, twine, spray paint, or even a hosepipe, carefully outline the boundaries of your patio, following the measurements you have calculated. Taking the time to physically mark out the area provides a visual representation, allowing you to assess the space, make adjustments if needed, and ensure that everything fits appropriately. This process not only guarantees that your patio will be proportionate and aesthetically pleasing but also helps you anticipate any potential challenges or modifications that might be required before proceeding with the installation of slabs. By marking out the area, you can achieve a balance between functionality, design, and your personal preferences, resulting in a patio that perfectly integrates into your outdoor living space.


How Many Slabs Do I Need?

Once you have determined the total area of your patio in square metres, the next step is to calculate the number of pavers or paving slabs required to cover that space. On our website, we understand the importance of providing comprehensive information to assist you in your patio project. We display the coverage achieved with each product listed meaning you can easily determine the number of pavers needed based on the area you have calculated. This feature saves you valuable time and effort, ensuring that you can make informed decisions and choose the right amount of paving to perfectly match the dimensions of your patio. With our detailed coverage information, you can confidently proceed with your patio project, knowing that you have the necessary resources at your fingertips.

In summary, calculating the size of your patio and determining the number of slabs required is a crucial step in planning and executing your outdoor oasis. By accurately measuring the area of your patio, whether it be a square, rectangle, or a more complex shape, you can determine the ideal dimensions and create a fabulous design. Additionally, utilising square metres as the unit of measurement ensures consistency and clarity throughout the process. When it comes to selecting the right number of paving slabs, our website provides valuable coverage information for each product, enabling you to make well-informed decisions and achieve the desired results. Armed with these calculations and resources, you're ready to embark on your patio project with confidence, creating a space that beautifully blends indoor comfort with the splendour of the great outdoors.