BE Constructive Smart | Waterproofing

February 4, 2019

Why is waterproofing important?
Correct and compliant waterproofing techniques are extremely  important right throughout the construction process for two main reasons;

1. It provides protection to the structural elements of the building, water egressing out of areas where it shouldn’t be, will cause an array of moisture related structural integrity issues throughout the building if not addressed in a timely manner.
2. Should moisture enter areas of the building fabric it is not intended for there is potential for it to affect the health and amenity of the building. This is caused by mould, mildew and bacterial infiltration's among various other problems.

Where in building is waterproofing used?
Waterproofing is used right throughout the structure in different areas and stages of the construction process.  An example of a few locations throughout the building where waterproofing is absolutely crucial would include; Showers, baths, entire bathrooms, balconies, roof terraces or any other internal or external areas with high exposure to water and/or moisture.
 

 

What are they key’s to waterproofing?
You need to produce a water tight vessel which is created by applying a waterproof membrane capturing any water that may infiltrate into that particular area. You also need to include a place for the water to escape or drain away. An example of this would be to install a Puddle Flange in a bathroom floor that in conjunction with a waterproof membrane, creates a water tight exit for any water present on the bathroom floor.
 

Why is a puddle flange so important?
They provide a connection between the WPM and the waste outlet. This prevents the water from escaping into other unwanted areas that are not protected by waterproofing.
 

What happens if the water does escape and enter areas that are not waterproofed properly?
You will begin to get issues with the building and other parts of the structure. This can cause issues such as:
- Rising damp
- Rust & corrosion
- Mould & Mildew
- Bad odours
- Insect infiltration
- Peeling paintwork
- Compromised structural integrity of the building
 

Troy's Final Thoughts
Don’t over complicate your waterproofing method. Best practice is to create a water tight vessel, with the aid of a waterproof membrane which connects directly to the puddle flange; Take note it is also important to protect the membrane so there are no accidental penetrations. A critical part of getting this right is using a qualified tradesman with the relevant experience.
TROY KING

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