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Nikkalite® Dewtect Dew Resistant Sheeting allows better visibility and safety for motorists


Nikkalite® Dewtect Dew Resistant Sheeting allows better visibility and safety for motorists


Nikkalite® Dewtect Dew Resistant Sheeting allows better visibility and safety for motorists


Date: 27th August 2019

Nikkalite® Dew resistant sheeting allows better visibility and safety for motorists while at the same time reducing maintenance and whole life costs for clients.

Ensuring the safety of road users through exceptional visibility of road signs is a high priority for Rennicks. Our Nikkalite® products are of the highest quality and performance and Dewtect Dew Resistant Sheeting is a highly beneficial overlay for road signs. This durable, transparent film protects traffic signs from the impacts of dew to ensure clear consistent messaging for drivers.

Dewtect self-cleaning properties

As well as protecting signs from dirt and moisture, one of the most important aspects of Dewtect is that it is self-cleaning. The sign does not therefore need to be washed. This reduces any expensive on-site maintenance, as well as removing the need for traffic management and risk to road worker safety. It also provides much better protection in urban heavy areas and is ideal for use on high speed road networks where dew formation is prevalent.

How does dew reduce visibility?

Road signs are designed to reflect light back to their source, but certain factors and environmental conditions can make the signs appear less bright and harder to read. When dew droplets obscure a sign, it becomes extremely dangerous for motorists, as they spend too long trying to understand it rather than giving the road their full attention. Dew is formed when air passes over a cool surface, condensing into water droplets when the air can no longer hold the moisture. These droplets refract the light so that the reflected light is diverted away from the driver and results in a stark drop in visibility of the sign.

How does Dewtect help?

When dew forms as the air cools, it naturally condenses into water droplets. The unique hydrophilic coating of Dewtect has a very low surface energy which evens out the droplets as they form, resulting in a uniform membrane of water on the surface. This membrane allows for the flow of excess dew off the sign, essentially creating a continuous self-cleaning process. The uniform membrane prevents refraction of light, allowing for clear visibility at all times and full reflectivity of the sign.

This self-cleaning process also has the effect of removing surface contamination, and any dirt or dust that accumulates on the sign face. We actually specify that Dewtect not be manually cleaned – this has a significant effect on life-time costs of the sign as maintenance is not required and road worker safety is assured.

The technology uses a transparent self-adhesive overlay, meaning application is simple and the protective coating is smoothly added during the sign-manufacturing process. It also contains UV inhibitors which prevent discolouration and enhance visibility at night.

Why Nikkalite®?

At Rennicks we emphasise innovation and this technology allows a continued drive in safety and performance. Unlike other products on the market that claim to be dew resistant, Rennicks is a trusted partner in the highways industry and the Nikkalite® technology guarantees 7 years of dew resistance with the installation of these dew-resistant overlays, allowing safer, cleaner and more informed journeys.

Rennicks gives peace of mind that our products are all high-class materials that perform in all light and weather conditions. Dewtect sheeting is suitable for application to the surface of Nikkalite® Crystal grade and Ultralite retroreflective sheetings. Application should only be undertaken during the manufacture of new signs and as the final process through a wide width application roller in the sign shop. For more information on our protective overlay films, please contact us.

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About Featured Product

Nikkalite® Dewtect-S is durable transparent self adhesive sheeting with a hydrophilic surface coating which combats dew formation allowing normal retroreflectivity to occur.

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