The EVERBUILD Stain Block is a spray applied, heavily pigmented, white paint which permanently prevents existing stains such as water marks, mould satins, rust, nicotine, grease, soot, and pen marks showing through subsequent coatings. The Stain Block has an easy application aerosol formula, and works on most types of household/commercial surfaces. The heavily pigmented formula is perfect for quick and easy coverage. Specification: Size: 400ml.