Our experts are here for all of your plumbing needs as well give us a call today to find out more! Hours a day, days a week at ---. Are there any downfalls to combi boilers? We have the necessary qualifications, experience and skill to deliver an excellent service to commercial clients. Used the whole bottle overnight to unblock a slow running bathroom (bath and loo) pipe water now runs freely - exceeded my expectations! Report the problem to your landlord.