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WATERPROOF EXPOSED AREAS TO BE TILED

Tile-Ready Waterproofing System For Balconies & Showers


The ArmTec HyperFlex UnderTile system is a fully bonded, reinforced waterproof membrane installed on a bare screed before tiles go down — on new balconies, stripped renovations and wet areas. The waterproofing is in the right place: under the tiles, bonded to the substrate, with UltraBond WP as the tile-ready topcoat.

WATERPROOFING SYSTEM

Under-Tile ARMTEC HYPERFLEX - Tile Ready Waterproofing System

Every layer is built on the screed before a single tile goes down — the waterproofing is in the right place from the start. Penetrar binds the screed. HyperFlex embeds the reinforcing mesh. HydroSeal HF delivers the seamless waterproof membrane. UltraBond WP creates the tile-ready surface tiles bond directly to.

ArmTec HyperFlex Under Tile - System for waterproofing and installing tiles on balconies + showers

Application Steps

1/ Bare Screed Substrate

STRIP & REPAIR - All existing tiles and tile adhesive stripped back to the bare screed — or a fresh screed on a new build. The surface must be clean, dry and structurally sound before waterproofing begins.

2/ Posi Screed

REPAIR & LEVEL - All damaged screed, cracks and uneven areas filled and levelled — creating a sound, even substrate for the waterproofing system above.

3/ Penetrar

BIND & PRIME - Applied to the entire screed surface — binds any remaining dust, stabilises the substrate and maximises adhesion for all waterproofing layers above. On a porous screed, Penetrar keeps the polymer content of the waterproofing layers in the top layer where it performs best.

4/ ARMTEC MESH

REINFORCE - Fibreglass reinforcing mesh rolled out and shaped to fit the full surface — absorbs screed movement and bridges any residual cracks. The structural backbone of the waterproof membrane.

5/ HyperFlex — Mesh Embedding Agent

BOND MESH TO SCREED - Applied over the mesh and pressed firmly through to bond it permanently to the Penetrar-primed screed below — locking the reinforcing layer in place before the waterproof membrane is applied above.

6/ StretchSeal Membrane + Flex

REINFORCE CORNERS & TURNUPS - All wall turnups and internal corners reinforced — Flex applied, StretchSeal Membrane embedded, second Flex coat to encapsulate. Flexible and movement-tolerant at every wall-to-floor junction.

7a-b/ HydroSeal HF

WATERPROOF FIRST COAT - First coat of seamless liquid rubber membrane applied across the entire system once touch dry and walkable.
WATERPROOF FINAL COAT - Final coat applied once the first coat is completely dry — completing the seamless, fully bonded waterproof membrane.

8/ ULTRABOND WP

TILE-READY TOPCOAT - Applied over the fully cured HydroSeal HF — creates the cementitious bonding surface tiles adhere to directly with standard tile adhesive. No additional primer required.

9/ NEW TILES

TILE - Tiles installed directly onto the cured UltraBond WP surface with standard tile adhesive. The waterproofing is fully in place before a single tile is laid.

HOW IT WORKS

TILE-READY & FULLY WATERPROOFED

Tiles do not waterproof. Grout lines are not watertight — water passes through and sits against the screed below, causing screed failure, tile delamination and water ingress over time. The only way to stop this permanently is to put the waterproof membrane where it belongs: under the tiles, fully bonded to the screed, before a single tile goes down.

The ArmTec HyperFlex UnderTile system is specifically designed for bare screed substrates — new concrete screed on a new build, or a stripped screed where old tiles and adhesive have been removed. Penetrar binds the screed. ArmTec Mesh embedded with HyperFlex reinforces the surface against movement. HydroSeal HF delivers the seamless waterproof membrane. And UltraBond WP converts the waterproofed surface into a tile-ready substrate that tiles bond directly to — all before the tiler arrives.

SEE HOW IT WORKS

CASE STUDIES

REAL-WORLD APPLICATIONS.

Three applications of the ArmTec HyperFlex UnderTile System — new balconies, stripped renovations and wet areas waterproofed correctly before the tiler arrives.

New Balcony Waterproofed Before Tiling — New Residential Development

The ArmTec HyperFlex Under Tile system was specked across all balconies of a new residential development — choosing to waterproof correctly before tiling rather than risk costly remediation later. Penetrar was applied to each new screed, the ArmTec Mesh embedded with HyperFlex, all corners reinforced with the StretchSeal Flex system kept square for tiling, and the completed system finished with HydroSeal HF and UltraBond WP before the tiler followed directly onto the tile-ready surface.

Failing Balcony Stripped, Waterproofed & Retiled

A homeowner in Pretoria East had a balcony where tiles had delaminated and water was tracking through to the room below — the original installation had no waterproofing beneath the tiles. The tiles and adhesive were stripped back to the bare screed, the screed repaired with Posi Screed, Penetrar applied and the full ArmTec HyperFlex UnderTile system installed. HydroSeal HF and UltraBond WP were applied as the waterproof and tile-ready finish before new porcelain tiles were laid. The balcony has been watertight since.

Wet Area Floors Waterproofed Before Tiling — Commercial Fitout

A commercial fitout contractor in Sandton specified the ArmTec HyperFlex UnderTile system for all shower and wet area floors across a multi-storey office renovation — previous wet area failures had caused significant damage due to absent waterproofing beneath the tiles. All screed surfaces were primed with Penetrar, the full system installed with ArmTec Mesh and HyperFlex, all corners kept square using the StretchSeal Flex system and UltraBond WP applied as the tile-ready topcoat. All wet areas were tiled and fully operational within the project schedule.

WORK WITH US

Let our technical support team help you find the right solution for your application.

WATERPROOFING SERVICES

WATERPROOFING SERVICES NEAR YOU

Torchon Maintenance

Renew or maintain your current waterproofing system without removing it. The Armtec Renew system has excellent adhesion and can be applied directly over existing waterproofing systems. The Armtec Renew system can be applied directly onto bituminous substrates or existing torchon membrane. Surface will not delaminate when correct application procedures has been adhered to.

Roof Slab Waterproofing

The seamless eco-friendly concrete roof slab waterproofing system from SealPro Coatings can be installed on new and existing roof slabs. The waterproofing system is a high-performance universal waterproofing system specifically developed for long term protection. Applying the SealPro waterproofing system will guarantee a seamless waterproofing system that is UV resistant and durable.

Balcony Waterproofing

Balconies, like all other parts of a property, require waterproofing. Whether the balcony is constructed using a concrete slab or timber, if water has penetrated the top surface, it will find or cause weakness. This will result in water damage to the ceiling or walls below. The solution to this problem is to waterproof the balcony. Explore the Armtec under-tile waterproofing systems for more information.

Tile Roof Waterproofing

The tile roof waterproofing system is used to waterproof roof ridge, valley, flashing & parapet walls. The system will seal your roof and help protect against leaks and weathering. The tile roof waterproofing system is UV stable, weather-resistant, durable, long-lasting and low maintenance.

Metal Roof Waterproofing

Our approach to restoring and waterproofing metal roofs offers a long-term solution, with no exposure of brittle materials to the elements, providing you with a leak-free roof for years to come. The waterproofing system can be used to seal ridges, valleys, joints, overlaps & screwlines.

Ponds, Dams & Reservoirs

The waterproofing system can be used to seal ponds, cement dams, water features, birdbaths and fountains. When fully cured the waterproofing system forms an impervious, flexible and aesthetically pleasing waterproofing membrane which enhances the look of the pond or water feature.

CONTACT

NEED TO KNOW MORE?

LET'S TALK.

The success of any project depends on the type of product and the correct application of the solution. The SealPro technical support team has experience in all specialised coatings we supply and can help you to find the correct product & solution for your application.

+27 60 997 6364

Monday to Friday.
7:30 am to 4:30 pm.

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