Exterior waterproofing in the basement is normally done both at the surface and the footer level. Surface waterproofing generally involves the installation of a drain along the exterior part of the walls. Impermeable plastic sheeting is then put on the wall and sloped into the shallow trench. At the footer level, waterproofing will require the installation of footer drain tiles that are usually connected to the sump pump through the wall. This process is sometimes complicated by plants and sidewalks which need to be removed first. The cost of exterior waterproofing at the basement will normally depend on the amount of waterproofing for your home
Waterproofing at the basement is very important. The basement collects a substantial amount of water which can cause damage not only to the structure’s foundation but also to the things stored in the basement. Additionally, water build-up in the foundation walls causes molds and mildew which pose serious respiratory problems. So, exterior waterproofing at the basement will help you prevent any further water damage.
There are basically two main methods applied in waterproofing a basement. These are barriers and drainage. Barriers and drainage are usually used in waterproofing the basement on the inner side of the foundation walls. Barriers can be used for exterior waterproofing of the basement. These types of barriers are specifically designed to keep water out. Two types of barriers are usually used and include liquid and solid barriers.
The liquid barrier is directly applied to the foundation wall after it has been well cleaned and all the holes and cracks filled and repaired. The liquid is then allowed to set after which it is covered up and an extra solid barrier applied. The texture of the barrier should be able to direct water away from the foundation wall. Either method is effective in keeping water away from the building. The methods can be applied individually but for more effectiveness both methods can be used.
A drainage that runs around the perimeter of the buildings’ foundation is installed. A trench is then dug and crushed gravel is placed in it. A drain line is laid at the top of the rock. This drainage line must not be a solid piece of pipe so as to accommodate any water that the ground can no longer retain. The pipe then directs the water away from the foundation.
The ground needs to be somewhat level with a slight slope, whereby the slope needs to start at the foundation and slope downwards away from the building. A separate line can also be installed in order to collect overflowing water from down spouts and direct it away from the foundation into the waste water line.
Exterior waterproofing at the basement can be performed by the homeowner in case they have the expertise and the right tools to dig and back fill. However, it is advisable to seek professional service for quality and effective work. Whichever method you select, it should be done with the main aim of protecting your home from water damage.