I have worked alongside Simon & Seal-er Ltd for the past 18 months on various turnkey and specialist cleaning / sealing applications and I must add their service is second to none. I have used an array of products for specialist cleaning applications including Heavy Duty Algae removal and also  worked on heritage buildings applying their sealers which I have to say have brought  great results for myself and the client. We will continue to work with Seal-er and often turn to them for advice on what is the best product for the customers requirements