Black marks on an oiled oak floor

... So you’ve just had your oak floor fitted and you have sealed it with oil, and for some unknown reason there are now black marks on the boards. This occurs when the tannin in oak touches a wet or acidic environment and it causes a chemical reaction which leads to dark discolouration. The discolouration is caused by the following equation: Gallic acid + water + iron (III) iron (III) –gallate + acid

 

At Art of Clean we understand how a well finished floor can set off a whole room, giving your floorboards a new lease of life and increasing the lifespan of the timber.  Refinishing wood floors is one of our specialties, and we are trained and affiliated with the Ultimate Floor Sanding Company.  If you would like to talk to us about our services, please call our friendly team on 01223 863632 or visit www.artofclean.co.uk