Paving is an excellent solution for an outdoor terrace on one level. Granite pavers are not easy to install: their irregularity implies a specific installation so that they stay in place. Concrete pavement, called "self-locking" does not pose this type of problem. They are easy to install and allow for a variety of decorations.
- Bubble level
- Powder cord
- Brick square
- Rubber mallet
- Rules of wood
- Metallic pegs
- Seat of gravel and sand
- Sand bed
- Paving the terrace
Seat of gravel and sand
1. The laying of these pavers goes through three stages:
- establishment of an underlay of gravel-sand
- establishment of a bed of fine sand
- laying pavers.
A line drawn with a chalk line on the wall corresponds to the finished floor. Start by loosing the soil. Take as a reference threshold a gate that corresponds to the level of the finished pavement. The disbursement corresponds to the thickness of the underlayer plus that of the pavers. Dig the ground over the entire length of the work to be done. A peg will serve you as freelance. Draw a mark on the peg below the bubble level on the finished ground level. Clear the rubble. Tie a line on the mark.
2. Plant several pegs at the four corners of the field. From the first, stretch the string on new pegs, aligned and planted at each corner: the total surface of the terrace is thus delimited. Post over the initial depth, passing from peg to peg. Adjust the height of the chalk by guiding you on a large wooden ruler. Put a chalk on it. The thickness of the underlayer is thus determined.
3. Spread sand and gravel mixture with shovel. Tamp energetically with a lady until she becomes practically incompressible. This will give you a solid foundation for the work.
4. Lay the underlay with a wooden ruler, guiding you on the cords. Remove the excess underlay. Progress without pressing the cords so as not to distort the level.
5. With a jet, sprinkle the underlayment to allow more compacting. After drying, mark the final height of the pavement with a line, checking regularly the horizontality of the tracing. The height must correspond to the thickness of the sub-layer plus the height of the pavers. Remove the cords and pegs.
6. Spread a bed of fine sand over the underlayment. Leave an interval corresponding to the thickness of the pavers between the blue mark on the wall and the surface of the sand.
7. Equalize the sand on the underlayment. Make two rules whose thickness corresponds to the height of the sand layer. Place these two parallel rulers at the sides of the terrace, one along the wall, the other on the outer edge of the terrace. Drown them in the sand bed until they stop on the sand and gravel underlay. Check their horizontality at the bubble level. Equalize the sand layer with a third rule, placed perpendicular to the first two. Leave room for the pavers, respecting a space (equal to their thickness) between the smooth sand bed and the blue mark, marking the final surface of the pavement. After equalizing, remove the rules that are in the sand. Fill the voids they emit. Progress in this way for the entire surface of the terrace.
Paving the terrace
8. The laying of the pavers must always begin at an angle of the terrace. Stretch a line against the wall following the blue reference line indicating the finished height of the pavement. Flip it against the corner wall. Tie it on a metal rod planted in the corner. Place three pavers on the sand: their apparent face should be flush with the chalk. Check the straightness of the angle with a Mason square: its sides must follow the chalk stretched against the wall. Avoid walking on the layer of smooth sand. If necessary, progress on a panel placed on the sand.
9. Place the first pavers in the corner. Follow the lines. Nest the pavers into each other. Tamp them with a rubber mallet to sit them gradually on the layer of sand. Arrange pavers in chevron, in alignment or alternately.
10. Continue laying on the entire surface of the terrace. Cobblestones of different colors make it possible to obtain various decorative motifs. A sketch of the projected drawing, taking into account the dimensions and the chosen scale, allows a smooth and precise layout.
11. Ladyz all the paved surface. To avoid breaking the pavement, insert a plank between the lady and the pavers.
12. To give cohesion to the assembly, fill the joints with sand. Spread sand on the paved surface. Spread it with a big broom brush to fill the joints. You can use a special polymerizing sand, which hardens after watering. It provides waterproofness and stability to the terrace.
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