It blocks just about anything, including crayon, red wine and dirt. (But for damp stains you’ll need Ronseals Damp Seal). Flexes with the wood, so it doesn't crack or peel. Use white for light colours and grey for darker colours.
X2 Ronseal One Coat Shed & Fence Protector Warm Stone 5L UV Protection + Free 4" Fence Paint Brush & Nitrile Gloves | Long-Lasting Weatherproof Wood Protection | One Coat Formula for Sheds and Fences
Ronseal One Coat Shed & Fence Protector Warm Stone 5L UV Protection + Free 4" Fence Paint Brush & Nitrile Gloves | Long-Lasting Weatherproof Wood Protection | One Coat Formula for Sheds and Fences
Ronseal One Coat Shed & Fence Protector 5L Tudor Black + Free 4" Fence Paint Brush & Nitrile Gloves | Long-Lasting Weatherproof Wood Protection | One Coat Formula for Sheds, Fences & Timber
Ronseal One Coat Shed & Fence Protector Forest Green 5L UV Protection + Free 4" Fence Paint Brush & Nitrile Gloves | Long-Lasting Weatherproof Wood Protection | One Coat Formula for Sheds and Fences