Raindrop Noise Control

Raindrop Impact Noise Reduction

Why do metal roof panels generate so much noise when it rains?

Typical metal roofs are constructed from either steel or aluminium sheets with a panel thickness between 0.46mm to 2.0mm.

When it rains, the raindrops excite the thin metal panels upon impact. The thin metal panels resonate, which generates a high level of noise, especially during heavy rain.

Recommended Treatment

Megasorber D14 and Megasorber LD5 are products specially designed for rain noise reduction on metal panels.

These materials absorb the vibration energy and therefore reduce the rain impact noise of the thin metal roof panels.

Both options can be installed on either side of the roofing panel – installing on the underside of the panel will extend the product service life.

Megasorber D14

Megasorber D14 is a self-adhesive vibration damping sheet, with an easy peel and stick application. Sheets are pre-cut to 260mm or 130mm wide strips, to work with most metal roof profiles. Megasorber D14 offers consistent vibration damping at elevated temperatures.

Megasorber D14 does not need to be applied to 100% of the surface area – the recommended treatment area is 40 to 70% of the total area,

Megasorber LD5

Megasorber LD5 is a water-based liquid deadener, which can be painted, trowelled, rolled, or sprayed on. It has excellent bonding on metal roof panels, and a high damping effect.

Megasorber LD5 is ideal for panels with more complicated shapes, and can be applied in various thicknesses, depending on the substrate thickness.

Megasorber LD5 should be applied with full coverage on the panel (100% coverage) for best effect.

Further Information

As each project has different requirements, this information should be used as a guide only.

Please contact the Megasorber team with any specific enquiries for additional information and recommendations.



constrained layer damping sheet


liquid deadener