The word “waterproofing” is self-explanatory, meaning to make something resistant to water penetration. The practice of waterproofing has been around for many centuries dating back to biblical times, when boats were waterproofed using bitumen. The 1800’s saw natural bitumen used with a combination of other natural materials to waterproof roofs. Between 1945 and 1955, a more modern approach was developed, but it was only in the 1970’s that the first approved liquid roof water resistant coatings reached the markets. From there onwards, technology improved by the year and developed into the industry it is today.
Types of waterproofing
There are four main kinds of sealers:
- Silicon-based sealants protects against water damage, UV rays, extreme temperatures and even mould and can be used on natural materials such as marble or stone. The disadvantage is that you cannot paint over it.
- Polyurethane types have a shorter life span than silicon-based types, are not very eco-friendly, but you are able to paint over them.
- The bituminous types make great concrete, roof and tank sealants, being able to withstand hot and cold temperatures.
- Clear sealants are the most popular type, best suited for all kinds of projects and you can add tints to get the required colour.
What does waterproofing do?
It creates a tough flexible barrier against moisture, protecting the walls of the structure. It can withstand heat or cold and its formulation enables it to last for many years before it becomes necessary to apply another layer.
Why is waterproofing necessary?
- The porous nature of walls makes moisture absorption in areas with high humidity a problem as it can cause continuous dampness inside the building, causing mould and deterioration of painted walls.
- Heat and cold expansion causes small cracks and in surfaces which can lead to water easily penetrating and damaging the structure.
- Too strong a cement mixture can also cause fine hairline cracks due to lack of flexibility, which will also lead to water seeping into the gaps.
At Showroom Condition, we believe waterproofing is one of the most important things any home owner can do for his property. We specialise in securing your property against moisture damage. Contact us for expert advice and long term solutions.