Sovereign Ltd is located inBridgend,Mid Glamorgan. Established in 1965, we are experts at treating wet and dry rot. Our sovereign woodworm and dry rot control products are manufactured to the highest standards. We manufacture to ISO &BSI 9001/9002 quality management standards. Our products are designed to support black mould control. As well as being a sterilizing agent, our Mould Eradication Additive can be added to any emulsion paint to prevent the recurrence of the problem.