Outdoor Concrete Slab Drainage

16 concrete slab crack repair.

Outdoor concrete slab drainage.

In hot weather it can expand and if it meets with an unmovable object it will crack. If there are no cracks in the concrete slab you can pour concrete right over it and slope it properly. So to calculate the difference in height between one end of a patio or walkway and another simply multiply the length by one quarter. The standard slope for proper concrete drainage is a one quarter inch drop for every foot of length.

Concrete expands and contracts with the temperature. Correcting drainage problems can cost 1 100 to 5 500. Although you can add a drain to an improperly sloped patio the best way to handle this is to make sure that the patio is sloped correctly when it is built. This means the end of a patio protruding 10 feet from a home will drop two and a half inches from the.

It is not uncommon to see improper or inadequate drainage such as drain pipes that are too small for the amount of water they must move drain pipes that flow uphill or do not have enough drop to move water fast enough. But the problems may not end there. If your landscape prevents you from pitching the patio to allow for natural water runoff your concrete contractor can install an in slab drainage system with gravel filled channels to carry the water away. If that water stays on your patio surface it will cause damage to the structure of the concrete itself and may form a breeding ground for mosquitoes and mold.

Leveling existing concrete patio for drainage hello i am planning a diy project to screen in my existing and covered concrete patio. The surface of a concrete slab is impervious to water which means that if water can t run off the surface it will pool on your patio. During rainstorms the patio collects some water thereby forming puddles since there is not a good slope to allow for drainage. The best way to prevent patio drainage problems is to plan for them when the slab is installed.

Sometimes drainage will cause problems and that moisture can be directed away from the concrete slab. Find outdoor drainage accessories at lowe s today. Problems such as improper slope or no slope at all can begin with the pouring of the concrete. This can be a problem made worse by melting snow or a heavy rain.