How to make a blind area (fundamentals)

Since the blind area should drain water from the house, then it certainly should be laid with a slope from the house. The slope depends on the blind area coverage: for gravel and cobble - 5-10% (5-10 cm by 1 m wide blind area); for asphalt and concrete - 3-5%.

Bias blind area
The width of the blind area take depending on the type of soil and the width of the eaves of the roof. In conventional ground it must be 20 cm wider than the eaves, but not less than 60 cm, on subsiding - not less than 1 meter.

The width of the blind area
Along the perimeter of the blind area is desirable to make a concrete tray for water drainage, for these purposes, you can use the sawn pipe, laid on the concrete base.

Removing water from the blind area
At the junction with the wall is done blind area expansion joint width of 1-2 cm. Sometimes, it is recommended to plug the sand or Epps, but it is better suited for this purpose two layers of roofing material, or bitumen or sealant. If the house is made basement waterproofing, it just shows the level of the blind area.

Compensation seam
Joining blind area with a wall or a tight cap can not, as in the case of low rainfall may suffer lining material, for example, showered tiles in the basement.