Ronseal RSLTTWPBL25L Trade Total Wood Preserver Black 2.5 litre Ronseal Trade Total Wood Preserver is a traditional highly penetrative wood preserver that provides long-lasting protection to exterior wood. Prevents rot decay and woodworm attack. Ideal for use on sheds and fences. This Ronseal Trade Total Wood Preserver has the following specification: Colour: Black Size: 2.5 litre Coverage: 8m2 with 3 coats