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Professional Building Supplies£21.44Visit shop Lindab Brown Rectangular Steel Gutter Union - 140Mm
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The Lindab Rectangular Gutter Joint is designed for professional contractors and DIY enthusiasts installing or repairing the Lindab rectangular rainline steel guttering system. It provides a reliable, watertight connection for 140mm gutter lengths through a quick snap-fit mechanism, effectively eliminating the need for complex mechanical fasteners. While the joint is robust and durable, it requires the application of silicone spray to the internal seals during installation to ensure optimal adhesion and long-term performance.
| Model Part Number | RTSK140BN |
|---|---|
| Brand | Lindab |
No, this joint is specifically engineered for the Lindab 140mm rectangular rainline steel system and may not provide a watertight fit for other brands or profiles.
The joint relies on its integrated rubber seal. While silicone spray is required to aid installation and seal adhesion, additional mastic sealant is typically not required if the joint is snapped on correctly.
Yes, it is constructed from high-quality steel consistent with the Lindab rainline system, which is designed to withstand external weather conditions and resist corrosion.
Silicone spray acts as a lubricant to help the gutter glide past the rubber seal without pinching it and improves the seal's adhesion to the steel surface.
The Lindab system comes pre-finished in brown. If you need to color-match, consult a professional painter regarding specialized metal-bonding paints, though this may affect the warranty.
The design of the Lindab system allows for slight movement, but ensure you follow recommended bracket spacing to manage thermal expansion across the entire run.
Ensure the gutter profile is not deformed and that you have applied enough silicone spray to the rubber seals to reduce friction.
Check that the gutter ends were cut straight and that the seal was not displaced during installation. Re-seat the joint if necessary.
To install, ensure the gutter ends are cut cleanly and are free of burrs or sharp edges that could damage the internal rubber gasket. Before snapping the joint into place, spray the internal seals with a high-quality silicone lubricant; this step is essential to ensure the seal seats correctly against the steel and prevents the gasket from rolling or pinching. This product is exclusively compatible with the 140mm Lindab rectangular rainline range. For long-term care, periodically inspect the joints during your annual gutter cleaning routine to ensure there is no debris build-up, and verify that the guttering system remains securely clipped into the mounting brackets.
