Wavin Osma SquareLine Gutter Union - 100mm - White

Name: Wavin Osma SquareLine Gutter Union - 100mm - White
Brand: Osma
SKU: ftiadjikvd
Price: 7.75 GBP
Availability: InStock

The Wavin Osma SquareLine gutter union is designed for 100mm (4 inch) square section guttering sys...

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Wavin Osma SquareLine gutter union 100mm white 4T809W

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Product Information

Full details

The Wavin Osma SquareLine Gutter Union is designed for professional contractors and DIY enthusiasts installing or repairing 100mm (4 inch) square section guttering systems. Its primary benefit is providing a robust, leak-free connection between two gutter lengths, supported by wide, retained seals that simplify the installation process. Note that this component is specifically engineered for Osma SquareLine systems, meaning it may not provide a watertight fit when mixed with different gutter profiles or brands.

All features

Model Part Number	4T809w
Brand	Osma

Extended Product Information

FAQs

Can I use this with other 100mm square gutter brands?

This union is designed specifically for the Wavin Osma SquareLine system. Mixing brands is not recommended as profile dimensions and seal tolerances vary, which may cause leaks.

What is the purpose of the expansion markings?

The markings indicate the correct positioning of the gutter ends to allow for thermal expansion. Positioning them correctly ensures the joint does not fail during seasonal temperature changes.

Does this union require solvent welding?

No, the Osma SquareLine union uses a push-fit design with retained seals and does not require solvent welding.

Is this product suitable for a conservatory roof?

Yes, provided the conservatory uses a 100mm square guttering system compatible with the Osma SquareLine range.

How often should I replace the seals?

Under normal conditions, the seals are designed to last the life of the guttering. Replace them only if they become damaged or deformed during installation or maintenance.

Troubleshooting

Joint is leaking water

Check that the gutter ends are cut perfectly square and fully inserted into the union past the expansion mark. Ensure seals are not pinched or covered in grit.

Union is difficult to snap onto the gutter

Apply a light coat of silicone-based lubricant to the seals and ensure the gutter end is deburred to prevent catching on the rubber.

Pros and Cons

Pros

Integrated seals ensure reliable water-tight connections
Expansion markings prevent common installation errors
High manufacturing standards (BS EN 607:2005)
Easy to snap into place during assembly

Cons

Exclusive to Osma 100mm square profile systems
Requires proper alignment to prevent sealing gaps
Not compatible with round guttering profiles

Setup, Compatibility & Care

To install, ensure the gutter ends are cut square and deburred to prevent damaging the internal seals. Slide the gutter ends into the union up to the internal expansion mark. The system is designed to be a push-fit, but ensure it is properly supported by a bracket close to the joint to prevent sagging.

Compatibility is restricted to the Osma 100mm SquareLine range. For care, keep the seals free of debris during installation; once per year, inspect the joint to ensure no grit or leaves have forced the seal out of alignment, and clear away any accumulated dirt to maintain optimal water flow.