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Foundation Drains
A foundation drain relieves water pressure that can build up around
basement walls or foundation.
EZflow
10" diameter units are installed at the bottom of the wall with a
downward grade toward a positive outlet. If the ground water
elevation is high, additional 10" aggregate units can be added.
Building codes may mandate foundation drains.
EZflow
foundation drains neutralize hydrostatic pressure by disposing of
approaching groundwater before it reaches subsurface walls. It
provides a drainage system that collects seepage from the backfill,
routing it downward and away from the structure through a drain.
Below grade structures, such as
foundation walls, are particularly susceptible to the combined
effects exerted by soil and water penetration, and major distortion
such as cracking. More than 60% of residential homes suffer from wet
basements.
EZflow
foundation drains need to installed with an even downward slope
toward an outlet. The minimum slope should be about 1 inch per 10
feet. This may require the use of a builder's level and level rod.
A barrier over or around the
EZflow
units may be required to prevent sand-like soils from entering the
EPS aggregate. The type of barrier can be untreated building paper,
filter fabric, newspaper, or straw and should be selected based on
site conditions. Local practices in similar applications and soils
may be a guide as to the type of barrier that should be used.
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