We make our Skip and Container Paint on a xylene thinner. If you do need to thin back the paint, you can use a standard cellulose thinner. Please do not under any circumstance use a white spirit. Cellulose thinner is a standard thinner for paint and can be found in most DIY stores such as B&Q. We do sell standard cellulose thinner in both 5 litre and 25 litre options - if you would like to add some to your order, please call us on 01782 550733.