Australian builders, architects and homeowners know that durable construction starts with solid protection against water. No matter how sturdy your materials, moisture is the silent enemy that can weaken structures, drive up maintenance costs and create headaches no one wants.
If you’re working with Magnum Board, a popular choice stocked by Bunnings and trusted by builders across the country, then making sure it’s properly waterproofed is essential to keep your project watertight for years to come.
That’s where high-performance Drizoro products from Scientific Waterproofing Products (SWP) come in.
Backed by years of proven results, Drizoro products give builders, architects and homeowners a simple, reliable way to protect Magnum Board from water damage. Let’s look at why getting the waterproofing right matters and how this system keeps your project safe.
Why Magnum Board needs the right waterproofing
Magnum Board is known for its strength and versatility in residential and commercial builds. But like any board system exposed to moisture, poor waterproofing of magnum boards can lead to leaks, swelling or structural compromise over time.
The solution?
Pair the Magnum Board with a proven waterproofing system that protects joints, seals gaps and creates a flexible, resilient barrier.
With Drizoro’s range of cement-based waterproofing products, you’ll have confidence your Magnum Board stays protected from the elements, no nasty surprises later.
Keep every joint and surface protected
As a builder, you want to know that once the boards are installed, they’re going to stay protected for good. Drizoro products from SWP make that simple.
Proper Magnum Board waterproofing isn’t just a quick coat and hope for the best. It’s about using a complete system that works together from start to finish, so you can get the job done right the first time, with no surprises down the track.
Here’s what a solid Magnum Board waterproofing job should cover:
- Joints sealed
- Corners and edges reinforced with Maxmesh
- Surfaces are fully coated and protected
- Flexible enough to handle movement
Get these right and you’ll have peace of mind knowing your Magnum Board is waterproofed and will hold up well into the future.
Key considerations when Waterproofing Magnum Board
When you’re waterproofing Magnum Board, it’s worth taking a moment to get it right. Here are a few things you should always keep in mind before you start:
- Surface Preparation: A clean, debris-free surface ensures the best bond for your waterproofing layer. Old paint, loose particles or dust can weaken adhesion and create gaps for water to sneak through.
- Joint Sealing: The joints between Magnum Board sheets are common entry points for moisture. Properly filling these gaps and sealing them makes a big difference to the board’s lifespan.
- Reinforcement: Areas where walls meet floors (or where there’s movement) need added reinforcement. Mesh helps strengthen these spots and keeps the waterproof layer flexible.
- Flexible Protection: Buildings move and settle over time. Your waterproofing needs to move with it without cracking or splitting.
To address these challenges, our products: Drizoro MAXSEAL® FLEX M, Drizoro MAXJOINT® ELASTIC EXPRESS and Drizoro MAXMESH work together to seal joints, reinforce weak points and create a flexible waterproof barrier.
Curious about how to waterproof Magnum Board? Read on to discover how these products can ensure long-term protection for your next project.
The best Drizoro Products for Magnum Board
At Scientific Waterproofing Products, we recommend three proven Drizoro products for waterproofing Magnum Board:
Drizoro MAXJOINT® ELASTIC EXPRESS
A high-performance, flexible sealant designed to fill joints between sheets. Its flexibility means it stays sealed even when there’s structural movement.
- Perfect for filling gaps between Magnum Board sheets, applied at a minimum thickness of 10 mm and 30 mm wide for a strong, flexible seal
- Adheres strongly to cementitious surfaces
- Remains flexible to handle expansion or contraction
A cement-based waterproofing membrane that can withstand both positive and negative water pressure, meaning it protects from water trying to get in from any direction.
- Creates a tough yet flexible barrier at 2 mm thickness, two coats finished
- Ideal for balconies, basements, water tanks and external walls
- Excellent adhesion to Magnum Board once the surface is prepped
A reinforcing mesh that strengthens and stabilises your waterproofing layer, especially around tricky areas like corners or joints.
- Embeds easily into the first coat of MAXSEAL FLEX M®
- Bridges small cracks or joints
- Ensures a continuous, resilient waterproof barrier
This complete combo is designed to make waterproofing Magnum Board simple and reliable, so you can lock in protection now and avoid costly headaches down the track.
How to waterproof Magnum Board with Drizoro
Ready to get started? Here’s a clear guide to waterproofing Magnum Board using Drizoro products from SWP.
Step 1: Prepare the Surface
Remove all loose materials and debris. If the board is painted, strip off all paint to expose a clean, sound surface. This is vital for good adhesion.
Step 2: Wet Joints and Fill Gaps
Thoroughly wet the joints between Magnum Board sheets. Apply MAXJOINT® ELASTIC EXPRESS to fill the gaps. Allow it to cure for 72 hours for the best results.
Step 3: Reinforce Joints with MAXSEAL® FLEX M and MAXMESH
Once the joints are filled and cured, wet the joint areas again. Apply a coat of MAXSEAL® FLEX M, then press a 50mm wide strip of MAXMESH across tongue and groove joints into the fresh coat. Ensure the 200mm MAXMESH is embedded neatly into any corners, especially at floor-to-wall junctions. Let this cure overnight.
Step 4: Apply the First Full Coat
Wet the entire Magnum Board surface and apply MAXSEAL® FLEX M at a rate of 1kg per square metre. This forms your first protective membrane. Leave to cure overnight.
Step 5: Extra Reinforcement for Floor/Wall Joints
For added protection where walls meet floors, wet the surface and coat 100mm up the wall and out 100mm on the floor with MAXSEAL® FLEX M at 1kg/m². Embed a 200mm strip of MAXMESH into the first coat while it is wet.
Step 6: Apply the Second Coat
After a min of 6 hours, wet the surface again and apply a second coat of MAXSEAL® FLEX M, again at 1kg per square metre. This locks in durability and ensures complete coverage.
Step 7: Let It Cure
Allow a minimum of four days before you apply any further finishes like paint, tiles or cladding. This ensures your waterproofing is fully set and ready to do its job.
Important Note: Special Surfaces
If you’re working with exposed/rusted metal surfaces, prep the surface with MAXREST® PASSIVE first.
For areas that will be tiled, pair your system with MAXKOLA® FLEX (for tiling) and MAXJOINT® FLEX (for grouting).
Why Drizoro is trusted for Magnum Board
Builders across Australia choose Drizoro products from SWP for one simple reason: they work. Each waterproofing product is designed to simplify the waterproofing process without sacrificing strength or durability. They’re easy to apply on-site, cure quickly and provide reliable protection that moves with your structure, not against it.
And with a 10-year warranty on all Drizoro waterproofing solutions, you can relax knowing your Magnum Board project is built to last.
The benefits for builders and homeowners
Choosing the right waterproofing solution now saves you time, money and stress later. Here’s what makes the Drizoro system so valuable for Magnum Board projects:
- Streamlined Process: Fewer products, less guesswork. One complete system for joints, surfaces and corners.
- Durable Results: Cement-based flexibility means the waterproofing won’t crack or fail as your building moves.
- Easy Application: Clear steps, quick curing and products that work well together, perfect for on-site efficiency.
- Trusted Locally: Sold through Scientific Waterproofing Products and stocked at Bunnings, Drizoro products are always within reach.
When you’ve put the effort into using Magnum Board, it makes sense to back it up with waterproofing that’s proven to last.
With Drizoro and Scientific Waterproofing Products on your side, you get peace of mind that every joint, corner and surface is protected properly.
Get the best waterproofing solutions for your next project with SWP
At Scientific Waterproofing Products, our team is here to provide you with the most effective waterproofing product for your unique project.
For any questions about your next waterproofing job, or which product is best for your project, contact us today.
You can also check out a list of local Drizoro resellers and applicators here.
SWP is committed to providing the right waterproofing solution for any water-related problem or application.