i have just bought a second hand bailey pageant sedan 4 birth,i have now found out the shower room walls are full of damp, and needs renewing, also the roof or cieling is also damp , and needs renewing, 1st can anyone help me , by telling if this is a difficult job to undertake, and second , where can i buy the roof (cieling) panels.i am pleased with the van its lovely and just what iv been looking for , but as a complete beginer to caravaning, i am desperate for any help or tips thanks very much, john