Sorry, this is slightly obscure but I was just wondering whether anyone had come across similar problem to us when buying a house: we're close to exchange and the vendors are refusing to give a damp specialist access to check whether there is any rising damp (surveyor thinks yes, specialist firm instructed by estate agent thinks no and surveyor has advised us to get independent second opinion). We're not going to exchange without it but just wanted a sense check if possible. Are we being unreasonable??