What is Waterproofing A Basement All About?
How do waterproofing systems work in the basement and what exactly are they?
To answer that question, let’s first look at historically conventional basement waterproofing and how it is supposed to work.
If you imagine how a basement is first built, when the house it is sited in was first conceived, then basically the following happens. A big hole in the ground is dug, the footer or foundations are laid, the walls of the basement are built and then the rest of the house follows.
The important point to note is the first one in the list above - that big hole in the ground.
The construction of basement walls invariably leaves a void on the exterior which requires backfilling. Loose backfill is what is used to fill this void. Well compacted or not, introducing a huge pile of loose backfill is going to cause problems. Water will always flow in the path of least resistance.
Water will continuously seep into this area. The conventional way of waterproofing a basement provides some form of drainage pipe for this water to drain away, but the problem with this is that often these pipes get silted up. It’s natural enough, the water is bringing all sorts of suspension with it. When these pipes get filled the system overloads and a lot of water pressure gets applied to the outside walls of the basement. Water will work its way through even the smallest gaps, even though basement walls are waterproofed in some way.
This kind of situation is persistent because the tubes that should drain the excess water eventually deteriorate.
A lot of the time a huge mistake is made by not providing access to these pipes. To keep water out of a basement waterproofing is also applied to the external walls. This is also called a tanked system.
A better basement waterproofing system, such as the drained cavity basement waterproofing system, works by getting rid of the water pressure on the walls. Water is controlled, collected and allowed to flow through hidden drainage channels either to natural drainage or to a sump pump where the water is removed away from the property.
Waterproofing a basement is a better system when they are installed internally and have easy access ports for removing the silt etc. It takes minimal disturbance to the original basement where traditional tanking or other methods have failed.
So to summarise, a good basement waterproofing system will:
- usually be a permanent or long-term solution
- stop both ways by which water can enter through the walls and up from the floor
- not disturb landscaping, decks, patios, driveways, etc
- usually be an approved waterproofing method for home loans
- often be substantially cheaper than other waterproofing methods
You want to be sure to choose a reliable waterproofer for your home, keep in mind that it will greatly increase the value by far more than what you initally paid.
In conclusion, you want a basement waterproofing system that will deliver:
- a permanent or long term fix
- stop water through the floor and walls
- not disturb the exterior appearance of your home
- an approved method by home loan lenders
- more affordable than other methods
You should look at waterproofing not as an expense but as an investment in the value of your home.
Tags: modeling