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Adheseal Showerseal Sealer

Adheseal Showerseal stops leaking showers and tiled areas without pulling up a single tile. It's a clear siloxane/silane penetrant that soaks into porous grout and substrate, forming an internal hydrophobic barrier while letting the surface breathe. Coverage runs roughly 5m² per litre, so a standard shower recess needs only 250–500ml across three coats.
Attention: This product is classified as a dangerous good. Shipping costs will be adjusted accordingly.
Vendor: Adheseal
SKU: SHOWERSEAL/3
Availability: In Stock
$65.00
$65.00
Prices do not include GST
Shipping & Delivery

Flat-rate shipping $17.95 + GST (metro and standard zones). Excludes remote/regional/high-cost postcodes and certain items (DG, oversized, long-length, or bagged products 15 kg+). If your order includes any of these, we will contact you to arrange additional freight charges. Online purchases only.

A leaking shower tray or external tiled area doesn't always demand demolition. When water finds its way through porous grout or substrate, you need a way to stop it without lifting a single tile. Adheseal Showerseal penetrates deep, forming a clear, internal hydrophobic barrier. It inhibits water ingress without altering the surface appearance or requiring disruptive repair work.

Why this product exists

Adheseal Showerseal provides an economic alternative to traditional, invasive leak repair. It is a clear, deep-penetrating siloxane/silane solution engineered to create an internal hydrophobic barrier within porous substrates. This stops leaks from the surface inward, without the need for demolition or tile removal. It also resists high pH conditions found in new concrete and lime-based mortars, ensuring durability. This penetrative action makes porous surfaces hydrophobic, allowing the substrate to 'breathe' while preventing water damage and reducing efflorescence.

The numbers that matter

  • Coverage: Expect approximately 5 square metres per litre. For a standard shower recess, 250ml to 500ml is often sufficient across three soaking coats. This allows you to plan material precisely for both large external areas and specific wet area repairs.
  • Drying times: It is touch dry in 2 to 4 hours, and set in 4 to 8 hours per coat. Full cure for shower recesses allows use after 24 to 48 hours. This quick turnaround minimises downtime on site.
  • Appearance: Dries clear with no gloss. This ensures the original aesthetic of tiles, masonry, or painted surfaces remains unchanged, making it suitable for visible architectural finishes.

What it's like to use

Prepare the surface by ensuring it is structurally sound, clean, and completely dry. Remove any loose or cracked grout, mortar, or existing sealants, then allow the substrate to dry thoroughly. The drier the surface, the better the penetration. Apply Showerseal evenly by brush, roller, or spray, ensuring thorough saturation. For walls, start at the top and work downwards, letting the liquid run evenly. Allow the product to cure for 24 to 48 hours before using the treated area. After Showerseal has fully dried, replace any removed sealants using a product like Adheseal S100 Sanitary Silicone Sealant to complete the waterproof system at movement joints and corners. Clean tools and skin with appropriate solvents or Adheseal Hand Wipes.

Where this product excels

  • Remediating leaking showers: Stop water ingress through porous grout and tile beds without the cost and disruption of removing tiles. This is particularly effective for ceramic, porcelain, and natural stone tiled areas.
  • Protecting external tiled areas: Create a durable hydrophobic barrier on balconies, terraces, and decks, guarding against water damage and extending the life of the installation.
  • Sealing masonry and stone: Make external concrete, render, brick, block walls, sandstone, and porous pavers hydrophobic. This prevents moisture penetration and significantly reduces efflorescence, maintaining the material's natural appearance.
  • General water repellency: Treat painted surfaces and Fibre Cement (FC) sheeting to make them water repellent, preventing moisture absorption and associated damage.

Choose this when

  • You need to stop leaks in tiled wet areas or external surfaces without resort to demolition.
  • The primary issue is water penetrating porous substrates like grout, concrete, brick, or sandstone.
  • You require a water barrier that maintains the original appearance of the surface, drying clear with no gloss.
  • You need to reduce efflorescence on masonry while allowing the substrate to remain vapour permeable.

Don't use this when

  • Not for: Bridging structural cracks or filling voids. These issues require flexible sealants or repair mortars before any penetrative treatment.
  • Not for: Low-density, sandy, or friable substrates that cannot achieve sufficient 'build-up' for an effective water barrier. Test these areas first.
  • Not for: A surface waterproofing membrane. This product is a penetrative sealer; for surface barrier waterproofing, consider a product like Everflex Aqua-Ban Waterproofing Membrane.
  • Not for: Application during imminent rain or inclement weather without protection, as this will compromise effectiveness.

Frequently asked questions

Can Adheseal Showerseal stop a leaking shower without removing tiles?

Yes, Adheseal Showerseal penetrates porous surfaces to form a hydrophobic barrier, inhibiting water ingress without requiring tile removal. This offers an economic solution to sealing leaks in tiled areas.

Does Showerseal change the appearance of tiles or grout?

No, Showerseal dries clear with no or low gloss, maintaining the original appearance of the surface. It works by creating a barrier inside the substrate, not on top of it.

Can Showerseal be used to fill cracks or voids?

No, Adheseal Showerseal is a penetrative sealer, not a filler. It cannot bridge existing cracks or fill voids. Loose or cracked grout should be replaced before application.

How soon can a shower be used after applying Showerseal?

The shower recess can typically be used 24 to 48 hours after applying the final coat. This allows sufficient time for the product to fully cure and establish the hydrophobic barrier.

Applications and benefits

Where Adheseal Showerseal Sealer is used, what it delivers, and who uses it
Application Key benefit Primary trades
Treating leaking tiled showers and wet areas Seals water leaks by creating an internal hydrophobic barrier without the cost and disruption of tile removal. Plumbers, Tilers, Renovators
Protecting external concrete, render, brick, and block walls Makes porous surfaces hydrophobic, inhibiting water ingress and reducing the risk of efflorescence. Builders, Landscapers, Property Maintenance
Sealing porous pavers and stone Provides long-lasting water protection without altering the surface appearance or creating a gloss finish. Landscapers, Tilers
Hydrophobic treatment for porous FC sheeting and painted surfaces Inhibits water absorption while allowing the substrate to breathe, extending surface life. Painters, Property Maintenance

Applying Adheseal Showerseal: Enhanced Protocols & Best Practices

  1. Surface Preparation

    Ensure the surface is completely clean, dry, and sound. For showers, stop use for 48 hours prior. Remove any loose grout, oils, or soap scum. Old sealants must be removed and the joint cleaned to ensure proper penetration.

    Pro Tip: The drier the substrate, the deeper the penetration. Maximising the drying time before application is the key to achieving the most effective and long-lasting hydrophobic barrier.
  2. Application

    Apply using a brush, roller, or low-pressure sprayer. It is essential to fully saturate the substrate.

    For Shower Recesses

    Apply 3 soaking coats, focusing on the grout lines. 250ml to 500ml is typically sufficient for a standard shower.

    For Walls

    Start at the top and work down, allowing the liquid to run evenly down the wall to ensure complete saturation.

    Timing: Each coat should be touch dry in 2-4 hours at 25°C. Allow for proper drying between coats.
  3. Curing & Finishing

    Allow the final coat to cure. The area can typically return to service after 24 to 48 hours. Any new sealant can be applied after the Showerseal has fully dried. Immediately wipe any liquid product off glass or glazed surfaces to prevent etching.

    Pro Tip: When applying outdoors, do not apply if rain is imminent. Protect the freshly coated surface from all inclement weather until it has fully cured to guarantee performance.

Product limitations

  • Not for: Bridging cracks or filling voids. Adheseal Showerseal is a penetrative sealer, not a crack repair solution.
  • Not for: Low-density, sandy, or friable surfaces. These substrates may not allow for adequate product build-up to form a reliable water barrier.
  • Avoid: Application if rain is imminent on exposed external areas. Protect applied product from inclement weather until fully cured.
  • Avoid: Contact with glazed or glass surfaces as etching may occur. Remove any liquid immediately.
  • Always: Conduct test areas before full application. This checks for absorption, potential discolouration from latent salts, and adhesion.

Safety and handling

This material is classified as a Dangerous Good, Class 3, due to its flammability. Always ensure adequate ventilation and eliminate ignition sources when handling.

Personal protective equipment

Wear rubber boots, overalls, gloves, safety glasses, and a respirator. If inhalation risk exists, use an organic vapour/particulate respirator meeting AS/NZS 1715 and AS/NZS 1716 standards.

Ventilation

Use only in well-ventilated areas, preferably outdoors. Ensure adequate ventilation to maintain air concentrations below exposure standards. Avoid working in confined spaces without checking the atmosphere.

First aid

  • Inhalation: Remove from contaminated area to fresh air. Keep comfortable for breathing. If not breathing, apply artificial respiration or CPR. Seek medical advice.
  • Skin contact: Immediately remove contaminated clothing. Wash skin thoroughly with soap and water. If irritation occurs, seek medical advice.
  • Eye contact: Rinse cautiously with water for at least 15 minutes, holding eyes open. Seek medical attention without delay if pain persists.
  • Ingestion: Do NOT induce vomiting. Rinse mouth with water and give liquid slowly if conscious. Seek medical advice immediately.

Storage and disposal

Store in a cool, dry place, away from all ignition sources. Keep containers securely sealed and locked up. Plastic containers must be approved for flammable liquids. Ventilate sealed containers periodically to prevent pressure build-up. Shelf life is up to 12 months in unopened containers. Dispose of contents and containers according to local regulations.

Substrate guide

Proper substrate preparation is critical for Adheseal Showerseal to penetrate effectively and form a lasting hydrophobic barrier.

Tiled showers, external tiled areas, masonry, brick, stone, and porous pavers

Surface prep: Ensure surfaces are structurally sound, stable, dry, and clean. Remove all dust, loose material, oils, grease, and other contaminants that may prevent absorption. Concrete must be cured for at least 28 days. Loose or cracked grout and old sealants must be replaced and allowed to dry completely before application.

Primer: Not required. Adheseal Showerseal is designed to penetrate directly into porous substrates.

Painted surfaces (porous)

Surface prep: Surface must be dry, clean, and free of flaking or friable paint. Ensure the painted surface is porous enough to allow penetration. Conduct a test area to confirm absorption and compatibility.

Primer: Not required. Adheseal Showerseal penetrates suitable painted surfaces.

Adheseal Showerseal Sealer Physical Properties

Adheseal Showerseal Sealer Physical Properties
Property Value
General Coverage Rate 5 m²/L
Coverage for Standard Shower Recess 250-500mL (3 soaking coats)
Touch Dry (per coat) 2-4 hours
Set (per coat) 4-8 hours
Full Cure (Shower Use) 24-48 hours after final coat
Service Temperature 10°C to 50°C
Application Temperature 5°C to 30°C
Colour Clear
Packaging 3 Lt, 15 Lt pails
Shelf Life Up to 12 months in unopened containers
Dangerous Goods Class 3
Packing Group III
UN Number UN1300
Hazchem Code 3Y
UN Proper Shipping Name TURPENTINE SUBSTITUTE

Adheseal Showerseal Sealer - Use Cases

Here are some common examples on where Adheseal Showerseal Sealer used by our customers.

Waterproofing

Leaking Shower, No Tile Lift

When existing tiled showers leak through porous grout or tile beds, avoiding costly demolition.

Deep-penetrating silane/siloxane creates an internal hydrophobic barrier, stopping leaks without costly, disruptive tile removal or altering appearance.

  • Deep-penetrating siloxane/silane
  • Seals leaks without lifting tiles
  • Hydrophobic barrier inside substrate
  • 24-48 hours full cure

Masonry

Exterior Masonry Water Repellent

Protecting porous concrete, render, brick, or stone surfaces from water ingress and efflorescence build-up.

Forms an invisible, internal hydrophobic barrier, preventing water damage and reducing salt spotting without altering the surface aesthetic.

  • Clear, high pH siloxane/silane
  • Protects external concrete, brick
  • Reduces efflorescence (white salt)
  • General coverage 5 m²/litre

Waterproofing

Leaking Tiled Balcony Repair

Stopping water leaks from external tiled decks, terraces, or balconies without removing existing tiles.

Invisibly penetrates porous grout and tile beds, forming an internal water barrier to seal leaks and protect structural integrity.

  • External tiled areas, decks
  • Deep-penetrating siloxane/silane
  • Hydrophobic barrier inside substrate
  • Dries clear, no gloss finish

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