Expert Waterproofing Services. From Mossel Bay to Plettenberg Bay
Our experts specialise in durable, high-quality waterproofing services for homes and businesses along the Garden Route.
Eon Erasmus +27 (0) 79 528 8266 | eon@chemicalwatersealing.com
Rising Damp | Aluminium Doors and Windows | Concrete Slabs & Patios | Cavity Wall Injection | Basements, Retaining Walls & Cellars | Roof Coatings | Lift Pits | Outlet Pipes | Moisture & Dye Tests AND MORE!
Waterproofing is a broad industry with a wide range of solutions available. However, we specialise in injection waterproofing, setting us apart from the rest.
Our process involves drilling a series of 16mm holes into the structure, followed by injecting a two-part chemical. This chemical reacts inside the structure to create an impermeable, flexible rubber seal. Initially, the chemical is a low-viscosity liquid, allowing it to flow into cracks and water pathways before solidifying into a durable rubber barrier.
Once the job is completed, it’s a permanent solution. NO MAINTENANCE required!
Rising damp occurs when ground moisture rises through walls due to an insufficient or defective damp-proof course (DPC).
This allows groundwater to be drawn up through the tiny pores in the bricks, leading to visible damage like paint bubbling and flaking off walls.
If left untreated, rising dampness can cause significant damage to skirtings, floors, and other structural elements, escalating repair costs and creating an unhealthy environment.
The most effective way to treat rising dampness is by installing a new chemical damp-proof course through injection. A damp-proof injection cream creates a new barrier that prevents moisture from rising, offering long-term protection against damp issues.
Aluminium doors and windows are prone to leaks, typically occurring at the joints of the extrusions and around the screws used to secure the frame.
To fix this issue, we drill small 5mm holes into the frames and inject a specialised rubber chemical that fills the extrusion and seals it from within. This process effectively prevents unwanted water from entering the brickwork, safeguarding your property.
Pictured Below: See the water found inside these frames, demonstrating the importance of proper sealing.
After Rubber Injection: Effective Sealing of Door Tracks
In this image, we demonstrate the rubber injection process on a door track. As you can see, the liquid rubber is spilling out from a crack in the brickwork, clearly showing that the previously installed DPC plastic was ineffective at stopping water ingress.
This visual evidence highlights the importance of using an effective rubber injection solution to properly seal gaps and prevent water from damaging your property.
AFTER
Precast slabs and patios often leak significant amounts of water at their joints.
Without the need to remove tiles or disturb existing flooring, we can drill and inject our specialised chemical to fill and permanently seal the joints, preventing water from seeping through.
Holes are drilled at 45º angles, targeting the joint halfway through the slab. Our extraordinary rubber chemical is then pumped into the joint, setting within just one minute.
Once set, the rubber remains in the joint or cracks as an elastic, waterproof barrier for life. This means that as the building experiences movement over time, the rubber will absorb this movement and continue to maintain a watertight seal.
AFTER
Sealing basement roofs, retaining walls, and cellars with cracks or expansion joints that are leaking water is one of our flagship services.
In many cases, the issue cannot be addressed from above, making chemical injection the most effective solution for tackling these leaks.
We drill holes at carefully determined angles and depths into the leaking cracks and joints. Once the chemical grouting begins, it continues until the entire area is filled with rubber from within.
After just 1-2 minutes, the chemical sets, and the rubber forms a permanent, watertight seal. Since the rubber is within the structure, it remains shielded from harmful UV rays, ensuring long-lasting protection.
AFTER
In many cases, the initial waterproofing on sub-surface ground retaining walls can fail, leading to water ingress.
Traditionally, re-waterproofing the structure would involve excavating the ground behind the wall to access the issue. However, this method is often invasive, expensive, and in many cases, not even feasible.
Luckily, we have the perfect solution for failed waterproofing on retaining walls!
Instead of the traditional and costly excavation method, we can inject the construction joint between the wall and floor. The chemical is injected under pressure, filling both the joint and the water pathways.
The result is a high-strength, durable seal that will remain intact and watertight for long-term protection.
If necessary, we can also drill holes in a diamond pattern through the concrete and inject the chemical behind the wall. This creates a rubber curtain between the structure and the water-accumulating ground.
This method ensures we seal the water within the structure as well as on the positive side of the wall, providing comprehensive waterproofing.
We are able to inject the construction joint between the wall and floor. Chemical is injected under pressure to fill the joint and the water pathways.
The high strength durable seal will fill the joint and remain intact and watertite.
Our expert team, led by a supervisor with extensive knowledge and experience in roof coatings, specialises in removing old and deteriorated waterproofing systems.
We then meticulously prepare and pre-treat the roof before applying the latest in liquid rubber technology. This ensures a flawless waterproof coating that delivers long-lasting protection. Plus, we offer a range of colours, so you can choose the perfect finish for your roof.
To achieve the best possible results, it’s crucial to correctly define the problem from the outset. Identifying the exact source of water ingress is essential to ensure effective treatment.
To accurately pinpoint the source, we conduct moisture tests alongside tracer dye tests, ensuring a precise diagnosis and tailored solution for your property.
Sub-surface lift pits are constructed with ground-retaining walls placed on top of the concrete cast floor. In the construction process, the concrete floor is cast first and allowed time to set properly before the walls are constructed. This creates a construction joint between the floor and the wall.
Hydrostatic pressure can lead to water ingress into the lift pit through these construction joints.
BEFORE
AFTER
BEFORE
AFTER
In October 2024 we had lift pit project that most people deemed impossible.
The pit was constructed with poor torch-on waterproofing. This resulted in massive water ingress into the pit itself.
Even with a dewatering pump running constantly, there seemed to be no end to the problem.
Excavating the ground behind the lift pit walls was no longer an option since further construction has been done above.
It was a huge problem, and everyone was looking to us to solve this issue as they had lost all hope.
The water was everywhere and was not dying down.
On the first day when we started sealing, all the other construction workers on the site as well as the other contractors came to see what we were up to.
Everyone was aware of the water ingress at the lift pit, and everyone’s curiosity was peaked.
They were unfamiliar with what they saw and when people asked us what we were doing at the lift pit, we answered that we were here to seal the water, they thought were joking. Some even laughed at us and said it is impossible.
We did not give them any answer, we only smiled back at them, for we knew the power and efficiency of what our chemicals can do.
After every day worked, the water seemed to get less and less. The other contractors and workers kept showing up more and more asking about “the magic rubber” as they called it.
After only a few short days, the water had completely stopped and the lift pit was actually drying out!
People could not believe that this lift pit that was flooding into a pond constantly now had a visibly dry floor.
The guys whom first laughed at us when we arrived on site now had eyes the size of tennis balls.
As buildings experience expanding and contracting forces, different materials behave differently due to their composition. This can lead to the formation of cavities between concrete and pipes, which can result in severe water migration to lower areas.
To prevent water damage without cutting into the concrete, we drill holes parallel to the pipes and perform chemical grouting. The chemical rubber used in the process easily travels around the pipes and sets to form a durable rubber membrane between the concrete and the pipes, sealing any gaps and preventing water infiltration.