SP Corke Plumbing & Heating For central heating and hot water needs in Sudbury SP Corke can provide all the services you could require. SP Corke can provide full central heating installations Power Flushing Power flushing is cleaning rust and scale debris out of radiators, pipes and boilers as thoroughly as possible using all means available and will guarantee the efficient operation of a central heating system Underfloor Heating Under floor heating features high energy efficiency and no maintenance and has several advantages as an alternative to conventional central heating. Combining radiant and convected heat for more even temperatures between floor and ceiling it is warmer under foot as well as solving the problem of space and unattractive radiators