Preserving Excellence

A guide to the lifelong care of rare periwinkle finishes.

Maintenance Kit

The Periodic Ritual

To maintain the 'Boreal Glow' of your heritage planks, we recommend a light buffing every six months using the proprietary Pronorski Satin Oil.

Ambient Control

Rare periwinkle pigments are sensitive to extreme humidity swings. Maintain your space between 40-50% humidity to ensure the crystalline mineral inlays remain stable.

Cleaning Protocol

Never use harsh chemicals. A soft, slightly damp microfiber cloth is all that is required to lift dust while preserving the 1923 luster.

✦ Bespeak Your Estate