- Practical advice
- Like slabs of natural stone
- Lay and stabilize slabs
- Check alignment symmetry
- Align the chalk
- Center and anchor the copings
- Spread the mortar
- Arrange and align elements
- Control the flatness
- Control the slope
Last work before bathing, laying the curbs is a fairly basic operation. Above all, it involves precise tracking of alignments to obtain a flawless border. Especially since the use of reconstituted stone elements, calibrated and flat on the reverse, further simplifies the work.
Simpler than cords, today there are grooved copings on the back to center on a metal profile attached to the support.
Before starting, plume the elements of the different packages or pallets to drown any differences in hues.
To prevent tiles from getting dirty over time, mosses and pollution, apply a stone matte varnish or a special saturating product.
Like slabs of natural stone
Made from cement, stone powder and binders, these copings are a perfect match for natural stone slabs (sandstone in general), but are more affordable. Ingelives and non-slip, although relatively smooth, they are available in 4 cm thickness, in rectangular, rounded format, with internal or external corner elements.
Beforehand, the immediate surroundings of the swimming pool have been prepared. Here, it is a reinforced concrete beach poured after mounting the basin kit. This peripheral slab incorporates the liner's mounting profile and shows a slight slope (2%) outward to prevent rain water from flowing into the pool.
Start by determining your material requirements and add 10% to the layout to accommodate the cuts. Once delivered, do a blank pose, starting at the corners. Locate the cups, distributing them as much as possible for a harmonious result. The cutting method is simple. On the slab area, dig a deep groove on the grinder equipped with a material disc. Then apply a blow on the wrong side to separate the two parts. With small, precise strokes, grind the freshly cut edge to give it a less regular appearance.
The use of the cord is essential to perfectly align the borders along the basin. The starting is effected by the angles, constituted here of two mitered elements. The latter served as a benchmark for pulling the cords materializing the front of the curbs, which protrude above the basin.
Strike a lean mortar at 250 kg / m3 (two parts of sieved sand for one part cement). Spread it by trowel at the first angle in an even layer 3 cm thick. Make a bed large enough to avoid any overhang. Wet the back of the stones slightly, then center them 10 mm apart and tamp them with your hands. Their rounded edge overhanging the water should be flush with the chalk line. Then check the flatness at the bubble level, as well as the transverse slope. Correct if necessary with a rubber mallet.
At the four corners of the pond, plant rigid stakes as close as possible to the newly laid corner stones. Align them on the edge of the slabs, basin side, and bring them together by well-tensioned cords. You can then seal the edges, aligning them carefully with these marks. As you progress, always check the flow gradient and flatness.
For grouting, opt for the mortar recommended by the manufacturer. It will harmonize best with the color of the slabs. At least twenty-four hours after the laying of the copings, spoil the mortar sufficiently flexible to be able to work it easily. With a cat-tongue trowel, stuff it into the interstices, smoothing it carefully. Similarly, make the joint under the slab nose, taking care not to drop cement in the basin. Remove the traces of mortar with sponge immediately.
Lay and stabilize slabs
Strike a mortar of fairly thick consistency. In the corners, lay a seat 3 cm thick, wide and flat. Lay the two slabs, and stabilize them on their bed.
Check alignment symmetry
From one edge to another, check the symmetry of their advances over the basin, their external slope and their flatness. Align the pegs on the rounded edges.
Align the chalk
The cord, secured here to a block, is stretched parallel to the edge of the basin and joins the next corner. Take enough time to judge your perfect alignment.
Center and anchor the copings
Adjusted on the cord, the curbs are centered and then anchored on their bed of mortar. Optionally, cut small wooden wedges that will serve as a template for the joints.
Spread the mortar
Avoid extending the mortar bed to the edge of the pool. Under pressure, it may flow back to the basin. On the other hand, be generous in the center and back.
Arrange and align elements
Arrange each element by adjusting it perfectly on the cord. If one or more slabs have been cut, divide them to melt them in the coping.
Control the flatness
Using a mason's rule topped by a bubble level, regularly check flatness. If necessary, use a rubber mallet to make up for defects.
Control the slope
The copings, slightly inclined towards the rear, will evacuate the rainwater to the outside. Check the slope and feel free to lift them to add some mortar.