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Nanolex Si3D BC

by Nanolex

We Say

Nanolex Si3D BC or Base Coat if you like if the perfect coating to combine with Si3D or Si3D HD as a base coat to increase the durability and performance of the top coat. It can be used also as a stand-alone coating boasting up to 36 months of durability.

Key Features

Beading7/10(Compared To Others)
Durability36 Months +(Average Value)
Slickness7/10(Compared To Others)


Nanolex Si3D Base Coat is a tough, semi-hydrophobic coating which makes the perfect base coat for Si3D or Si3D HD. Si3D BC helps to increase the durability and scratch resistance of the top coating but can also be used as a stand alone coating too if required. Si3D BC delivers solid, strong and extremely dense glass layers, which provides a tough swirl and chemical resistant layer.


More Information
Adds Protection Yes
Application Method By hand only
Durability 36 months +
Emits Strong Fumes Yes
Layerable Yes
Recommended For All paint types and colours
Scratch Resistant Yes

How To Use

Processing temperature: 5-30°C - Avoid direct sunlight and/or high air humidity.

Nanolex Si3D BC can be applied directly to all clear-coated (lacquered) surfaces. The lacquer surface must be dry and free of any contamination or dust. We strongly recommend to use Nanolex EX directly before the application to make sure that all oils/fillers and other dirt are removed completely from the surface. Use Nanolex microfiber towels and turn or exchange cloth frequently during cleaning/polishing.

If the car was machine polished before the application it is absolutely necessary to remove any (mostly invisible) fillers and oils – if those are not removed a white or grey hazing will appear on the paint once Si3D BC was applied. The paint sealant layer itself is too thin to be visible and can easily buffed off – only fillers and oils will become visible. We recommend to wash the car with Nanolex PreWash after the paint was machine polished to safely remove the majority of the contamination.

Spread 5-10 drops/m2 of Nanolex Si3D BC on a microfiber applicator pad and apply it sparingly by rubbing in with light pressure in criss-cross motions. Remove the coating residue with a soft microfiber cloth after a maximum of 3 minutes. There is no pressure necessary to remove it completely.

Let Nanolex Si3D BC cure on the surface for at least 12 hours (at ambient temperature, assuming 20°C) before the first water contact. Do not wash the car within the first 72 hours.

Curing time depending on temperature: @50°C: 3-4 hours @80°C: 2 hours