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Defining Waterproofing a Basement.

Posted by HomeDesigner | DIY | Sunday 21 September 2008 8:22 pm

The basement waterproofing systems and their working. To answer that question, let’s first look at historically conventional basement waterproofing and how it is supposed to work.

In case you are curious to know how the basement is built, you will see that the idea was first conceived in the design and then the next steps follow. It starts with the digging of a big hole, then the footer or foundations are laid. After the base is done, the walls of the basement are built and then only the rest of the house is constructed.

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. The problem here is that water looks for the path of least resistance, and you’ve just given it just that with a huge pile of loose backfill, no matter how well it’s been compacted.

Water will constantly ooze 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. The water is naturally bringing all sorts of suspension with it. Allowing these pipes to fill up, can result in an overload of the system, which can be catastrophic to the basement’s outside walls. So while the walls of the basement may be waterproofed in some way, water, as you probably already know, will usually find a way through the tiniest of gaps.

This kind of situation is persistent because the tubes that should drain the excess water eventually deteriorate.

Many times there is simply no access to these pipes which is a huge oversight. In an attempt to keep excess moisture out basement waterproofing also can be put onto the outer walls of the basement. This is also called a tanked system.

If you want to find out if you have water inside the concrete block of your walls simply tap a hole into the concrete block, near the floor, and see if you have water coming out of this block then you may want to consider a drained cavity waterproofing system this system drains the water from your walls, much the same way you just did, by adding drain holes in the bottom blocks that allows those areas to drain into a type of interior french drain system. To move water away from your property; it first must be collected and sent through drainage channels to a sump pump or a natural drainage field.

Waterproofing a basement is reputedly a better system when they are installed internally, have easy access ports for removing any silt and can be applied to basements where traditional tanking or other methods have failed but with minimal disturbance to the original basement.

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

Choose a reputable basement waterproofer when protecting your home, remember it is economically foolish not to waterproof, because the increased value from waterproofing will definitely exceed the cost of the waterproofing.

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,

While you are getting the house made you need to realize that waterproofing is more of an investment in the value of your house rather then an expense.

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