Waterproofing: Your Guide to Protecting Your Property

I'm stoked to share some knowledge about waterproofing with you. I'm super passionate about it because I've seen firsthand the damage water can do. Nothing's worse than seeing a building you've worked on get wrecked by water.

I remember one time we were called to a commercial building whose owner had tried to waterproof the roof themselves. They used some cheap sealant from a hardware store, and after the first big storm, the whole roof started leaking like a sieve! We had to rip everything out and start from scratch. 

It was a huge mess and cost the owner a fortune. That's when it hit me just how crucial professional waterproofing is. A poorly waterproofed structure will be more expensive than fixing it right the first time.

Introduction to Waterproofing

So, what exactly is waterproofing, and why should you care? Well, waterproofing is all about creating an impenetrable barrier against water. Think of it as a raincoat for your building. Unlike damp proofing, which just resists moisture, waterproofing stops water completely. 

It's super important because it protects your property's structural integrity, prevents nasty mould growth (which can be a health hazard), and keeps everything safe and sound, avoiding costly repairs down the line. We have decades of industry experience and are qualified in all waterproofing techniques and membrane types.

Where do you need waterproofing? Any water can cause trouble, including roofs, basements, bathrooms, balconies, terraces, water tanks, swimming pools, foundations, and even decks. Any area exposed to moisture needs protection, and that's where we come in.

Types of Waterproofing Methods and Materials

Now, let's dive into the nitty-gritty of waterproofing methods and materials. There's a whole bunch to choose from. The best depends on your specific needs. It is crucial to consider the material type you will use as it will have implications for project costs, project timeline, and how your surface will look.

Cementitious Waterproofing

This method involves using cement-based materials to create a waterproof layer.

Application and Uses

It is commonly used for internal wet areas like toilets, bathrooms, and laundry. It is also great for adhering to concrete and brickwork.

Advantages

Cementitious waterproofing offers excellent adhesion and corrosion resistance. It is also durable, economical, and easy to apply, making it a good all-around option for many situations. However, because it is rigid, movement or vibrations can cause cracks and failure.

Bituminous Coating Waterproofing

Also known as asphalt coating, this is ideal for concrete foundations.

Application and Uses

Applied to external concrete foundations, it is available in solvent-based and water-based forms.

Advantages

It's relatively inexpensive and offers good water protection.

Disadvantages

Keep in mind that it can get brittle if it's constantly exposed to sunlight.

Bituminous Membrane Waterproofing

These self-adhesive membranes contain asphalt, fillers, and polymers.

Application and Uses

Typically used for low-sloped roofs and areas with high water exposure.

Types

There are covered and exposed types, with the exposed ones able to handle the weather like a champ.

Advantages

They're also highly resistant to punctures, fatigue, and heat, so that these membranes can withstand much abuse. They are highly durable, resistant to tearing, and can withstand extreme temperatures.

Polyurethane Liquid Membrane Waterproofing

This is a solid choice if you need something flexible that can handle the elements.

Application and Uses

This can be used for roofs, decks, and balconies.

Advantages

It's super resistant to water, chemicals, and UV radiation.

Disadvantages

It's sensitive to moisture and can be more expensive. This type of membrane requires specialised installation.

Other Liquid Materials

Remember acrylic and epoxy options! These are typically less expensive than polyurethane and can be good choices for less demanding applications.

EPDM Rubber

This is super flexible, and the cost depends on the thickness and brand. It is popular for flat roofs because it is resistant to UV radiation and ozone. However, it can be punctured if not installed correctly.

Rubberised Asphalt

It is a rigid, flexible material that dries quickly and offers excellent weather protection. It is easy to apply because it is self-adhering and does not require special tools or equipment. However, it is not resistant to petroleum-based products and can be damaged by oils and solvents.

Thermoplastic

If you're looking for something that lasts a long time, thermoplastic is the way to go. It's flexible and can handle impacts. These are durable but more costly.

PVC Waterproofing Membrane

This one is water—and vapour-permeable and can be reinforced for extra durability. PVC membranes are easy to put up because they are light and bendable. However, they may contain plasticisers that can leach out over time, reducing flexibility and potentially causing environmental concerns.

We also have access to several waterproofing products from all of the major manufacturers based in Australia, such as Torch-on Membranes, Butynol sheets, Polyurethane membranes, Epoxy membranes, Bitumen membranes, Acrylic membranes, Car park sealers, and Spray membranes.

Pro-Tip: Always hire a licensed and experienced waterproofing contractor. Waterproofing isn't a DIY job. A professional will know the best methods and materials for your situation and ensure the job is done right. It also provides your warranty is valid.

Waterproofing Solutions

Alright, so how do we waterproof something? Here's the basic process:

Examine and Evaluate

First, we thoroughly inspect the surfaces that need waterproofing, looking for cracks, existing water damage, and other potential problems.

Choose the Best Solution

Next, we choose the correct waterproofing method to secure those surfaces effectively. We consider factors such as the surface type, the water exposure level, and your budget.

Prep the Surfaces

We prime the surfaces to get them ready for the waterproofing solution. This may involve cleaning, repairing cracks, and ensuring the surface is dry.

Apply the Waterproofing

Finally, we apply the waterproofing solution carefully and precisely, following the manufacturer's instructions to ensure a long-lasting seal.

Application Areas

As I mentioned earlier, waterproofing is needed in lots of places. Here's a quick recap:

Roofs

Protect your building from rain, snow, and sun damage.

Basements

Prevent flooding and moisture buildup, leading to mould and structural problems.

Bathrooms, Laundry Rooms, and Kitchens

Prevent water damage from leaks and spills protecting floors, walls, and ceilings.

Balconies

Ensure that water runoff doesn't damage the structure.

Terraces

Similar to balconies, keeping water away from the underlying structure is key.

Water Tanks and Swimming Pools

Prevent leaks and water loss.

Foundations

Protect the foundation from groundwater and soil moisture.

Decks

Keep the wood from rotting and the support structure safe.

Things to Think About When Picking a Method of Waterproofing

Choosing the proper method can feel overwhelming, but here are some key things to keep in mind:

Surface Type

Is it concrete, wood, metal, or something else? Different materials require different waterproofing solutions.

Climate Conditions

Will it be exposed to extreme temperatures, heavy rain, or intense sunlight?

Durability of the Material

How long do you want it to last? Some materials are more durable than others.

Cost

What's your budget? Prices are very different based on the job and the materials used.

Flexibility and Resistance to Weathering

Can it handle movement and the elements without cracking or deteriorating?

Pro tip: Don't skimp on waterproofing! I've seen many people try to save a few bucks by using cheaper materials or cutting corners, but it always costs them more in the long run. Trust me, investing in quality waterproofing is worth every penny. It saves you money on frequent maintenance.

FAQs About Waterproofing

What type of waterproofing is best?

The best type depends on the specific application, considering factors like the surface type, climate, and budget. For example, a flat concrete roof might benefit from a bituminous membrane, while a bathroom might be better suited for cementitious waterproofing. There is no 'best' - only 'best for the specific job.'

What is the best method of waterproofing?

There's no one-size-fits-all answer. The best method depends on the project requirements and site conditions. A basement might require a different approach than a balcony. Proper evaluation is key.

What should I prep before waterproofing?

Proper preparation involves thoroughly cleaning the surface to remove dirt, debris, and loose materials. Appropriate patching compounds should be used to repair any cracks or damage. The surface must also be dry before applying any waterproofing materials.

What is the best exterior waterproofing?

Options include bituminous coatings, membranes, and polyurethane liquid membranes, chosen based on durability and weather resistance. A UV-resistant membrane is crucial if you live in an area with intense sunlight.

Can a tiler do waterproofing?

Waterproofing in areas like bathrooms should be completed by certified professionals. While a tiler may have some knowledge of waterproofing, hiring a trained and accredited specialist is essential to ensure the job is done correctly and meets all relevant building codes.

Commercial Waterproofing: Why It's a Must

If you're a commercial property owner, this isn't just a good idea – it's necessary. Think about it: a leaky roof or a damp basement can lead to structural damage, mould growth, and unhappy tenants. The benefits of commercial waterproofing are numerous. 

With commercial waterproofing, you can also reduce repair and maintenance costs, improve your property's indoor air quality and energy efficiency, and prevent structural damage. As most commercial managers and construction operators know, unnecessary and ongoing maintenance of a building’s wet areas can cost a company thousands. We specialise in commercial waterproofing of all types.

What if I want to avail myself of waterproofing services?

We're here to make the process as smooth as possible. We'll assess your needs, recommend the best waterproofing solutions, and complete the job on time and within budget.

At All Needs Plumbing, we're committed to providing top-notch services to homeowners and establishment owners. We always adhere to Australian Standards for Waterproofing AS 4654.1-2012 & AS 4654.2-2012. The standards consider both the materials used and the craft. With us, you are in good hands.

For reliable commercial waterproofing in Brisbane and the Gold Coast, we tailor industry-leading solutions to the unique needs of businesses.

At All Needs Plumbing, we're ready to help protect your property from water damage. Call us to discuss your waterproofing needs!

We offer a $0 callout fee, 24/7 same-day service, a 15% seniors discount, and $150 off hot water systems. Contact All Needs Plumbing today to schedule your consultation!