Can DuroGrit be applied on interior woodwork? For example: when the customers want the interior woodwork to follow the exterior colour.

Even though it would be technically possible to use DuroGrit for interior woodwork, we do not recommend this. The product is developped for an exterior environment:

1. It contains a small amount of biocides to prevent fungi.
2. Unlike Oil Plus 2C, DuroGrit roughens the wood a bit.
3. With Oil Plus 2C you can have a much smoother, cleaner and brushmark-free end result, which is more desirable in an interior environment.

If you use DuroGrit for outside and Oil Plus 2C for inside, we recommend taking a look at our DuroGrit colour advice chart for several wood species to find the colour that matches best.