How to Install Paving Slabs and Pavers in Gardens and Outdoor Areas

Installing slabs and pavers in gardens and outdoor areas is an excellent way to beautify and make these spaces more functional. There are three main methods for carrying out this task: on a sand bed, on a mortar bed, and on supports. Below, the steps and recommendations for each of these methods are detailed.

1. Installing garden slabs on a sand bed

This method is recommended when the base is flexible, providing a stable and aesthetically pleasing finish.

Steps:

1. Prepare the sand bed: The thickness of the sand bed must be constant, ranging between 2.5 cm and 5 cm.
2. Level the bed: The bed should be leveled until it reaches the level of the finished pavement minus the thickness of the slab.
3. Place the slabs: It is important to avoid stepping on the sand bed during installation. Check the alignment of the joints every 4 or 5 meters.
4. Leave open joints: The joints should be left about 2 mm open so they can later be filled with fine sand.
5. Consolidate the slabs: Use a rubber mallet to press and seat the slabs in place.
6. Fill the joints: Fill the joints with fine sand, avoiding the use of mortar.

2. Installation on a Mortar Bed

This method is ideal when the base is rigid, as on concrete surfaces, providing greater durability and resistance.

Steps:

1. Prepare the rigid base: Place a concrete base with a thickness determined by the project, generally between 3 cm and 5 cm.
2. Prepare the mortar: The mortar must have a minimum strength of 125 kg/cm², with a dosage of at least 250 kg of Portland cement 32.5.
3. Mix the mortar: Achieve a soft consistency, with a cone slump between 8 and 10 cm.
4. Apply the mortar: Place the necessary material for each row of slabs as they are being laid.
5. Place the slabs: Press the slabs with a rubber mallet to ensure a uniform seating.
6. Maintain 2 mm joints: Make sure the slabs are separated by approximately 2 mm and check the alignment of the joints every 4 or 5 meters.
7. Restrict access: Prevent personnel access during the first 24 hours and avoid vehicle traffic for 21 days.
8. Fill the joints: After 24 hours, fill the joints with fine sand using successive sweeping motions.

3. Placement on Supports

This method is used when it is necessary to cover roofs of underground parking lots or other below-grade spaces, and when the base has a slope to drain rainwater.

Steps:

1. Place the supports: The supports must be regular in height to ensure the flatness of the finished pavement.
2. Adjust the slope: Based on the slope of the base, adjust the height of the supports to achieve proper rainwater drainage.
3. Place the slabs: Place the slabs on the supports, ensuring their stability and correct alignment.

Conclusion

The proper placement of slabs and pavers in gardens and outdoor areas can transform these spaces, improving both their aesthetics and functionality. By following these methods and detailed steps, a professional and durable finish can be achieved. If you have more questions or need specific advice, do not hesitate to contact us.