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Waterstop Streamline 90° Corner (2 Leg) is a pre-mitred waterproofing profile designed for L-shape residential showers to standardise screen alignment and ensure watertight integrity. Fabricated from 6463–T5 aluminium, this integrated system features a built-in tile height gauge to guide screed falls and a bullnose lip that helps a continuous seal between the membrane and frameless glass screens.
This Australian-manufactured solution simplifies compliance with AS 3740:2021 by providing a factory-squared 90° join that eliminates onsite cutting errors and prevents common delamination issues at the substrate interface.
Frequently Asked Questions About Waterstop Streamline – 90° Corner
Q: Can I install the 90° model over an existing screed?
A: No. It must be installed prior to screeding, as it acts as both a fall guide and a barrier. Install it first, then screed to the integrated tile gauge.
Q: Is the 90° angle pre-joined or do I join two straight pieces?
A: The 90° models are supplied as a single, preformed corner profile with two legs – no mitring required onsite.
Q: What if my shower isn’t perfectly square?
A: You can trim either leg onsite using a hacksaw or drop saw to match your actual dimensions. Ensure a tight wall fit for membrane sealing.
Q: Can this be used with frameless glass?
A: Yes. Frameless screens can be sealed directly to the bullnose lip using silicone, creating a seamless connection with the membrane below.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| L-Shaped (2-Wall) Shower Construction | Creates leak-free, compliant corner with screen integration | Builders, Tilers, Waterproofers |
| Volume Residential Bathrooms | Faster install time and standardised screen alignment | Builders, Developers |
| Bathroom Refits with Limited Space | Maximises usable space while eliminating hobs | Renovators, Designers |
| Frameless Corner Screen Support | Provides stable lip for silicone and membrane contact | Glaziers, Installers |
Applying Waterstop Streamline – 90° Corner: Protocols & Best Practices
General Application Steps:- Dry Fit: Position the profile in the corner. Use a pencil to trace inside and outside lines of both legs.
- Surface Prep: Clean and prime if required. Apply continuous bead of urethane sealant between pencil lines.
- Install Profile: Gently press into position. Use level to confirm both legs are even. Wedge if necessary.
- Seal Ends: Apply urethane sealant at floor-to-wall junctions and corner gussets. Tool smooth for full adhesion.
- Waterproof: Apply membrane under and up behind bullnose, avoiding the outer lip. Apply two full coats.
- Screed and Tile: Screed to tile gauge. Tile flush to both sides. Silicone screen to inner lip after tiling.
Limitations & Safety
Product limitations and safety information
Limitations:
- Corner must be installed before screeding – cannot retrofit over tiles or screed.
- Not designed for external waterproofing or UV-exposed use.
- Must be square to ensure correct membrane and screen alignment.
Safety & Handling:
- PPE: Wear gloves and protective eyewear during trimming or handling.
- Handling: Avoid denting corner join. Always transport in box with protection in place.
- First Aid: For cuts from sharp edges, rinse, bandage and seek help if deep. Avoid inhaling fumes from urethane or solvent-based sealants.
Waterstop Streamline – 90° Corner Adhesion & Preparation Guide
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Substrate preparation guidelines
- Concrete Subfloors: Sweep clean. Mark inside and outside lines for reference. Apply urethane sealant and install profile square.
- Timber Floors: Waterproof entire floor before installing profile. Use wedge levelling if required.
- Membrane Compatibility: Works with sheet or liquid membranes. Always apply two coats inside the shower zone up to the bullnose lip.
- Custom Corner Sizes: Profiles can be trimmed to suit site-specific dimensions. Pre-mark for leg length accuracy.
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