Why water proofing the foundations of the new a building ?
Because it is common to have the aquifer rise in winter which can lead to inflowing of water from the foundations
Because when the water table in the area of the building is higher than the foundation depth, it must be degraded
and sealed to secure the building when the pumping stops
TECHNICAL DESCRIPTION OF BASEMENT WATERPROOFING
A WATERPROOFING WITH BITUMENUS MEMBRANES
1. 1 FLOOR WATER TREATMENT.
1a .A solution of an asphalt base will be laid on the concrete concrete to anchor the substrate and then bind the
bitumen membrane so that the two materials have a chemical affinity
1b. Total adhesion of elastomeric bitumen membrane, reinforced by polyester fabric. It will be ensured that the
membrane will "protrude" out of the boundary of the wall in order to adhere to the membrane of the vertical
element when it is created
1c. Laying of geotextile.
2.WALL WATER TREATMENT
2a. Asphalt solution as at <1a> will be applied to the surface of the wall.
2b Packing of the bitumenus membrane with a flamethrower as in <1b> with parallel mechanical fastening to the
upper edge of the wall and adhering to the expected part of the floor membrane.
2c. Installation of drainage membrane for protection from dirt and drainage.
B. WATERPROOFING BY PVC MEMBRANE .
1. FLOOR WATERPROOFING
We place protection geotextile on the existing cleaning concrete that has to be polished
Subsequently PVC-based special 2 mm thick sealing membranes are laid and heat-sealed.
2. WALL PROTECTION:
At the upper end of the pit, the protective geotextile is suspended at the same time as the PVC membrane. Then the
vertical and the horizontal PVC sheets are joined by heat sealing
After the construction of the walls, the vertical sections "turn" on the walls and are mechanically fixed to the
coronation, after the geotextile is suspended.
When working on concrete, work should be done very carefully so as not to damage the membrane.
The surface of the walls must be suitable for waterproofing (cut haircuts, broken large concrete protrusions, etc.)