Some advice please. 1930's semi detached house, purchased from in-laws (!). To the front of the house (west facing), there is evidence of penetrating damp. Inside plastering done many times. This summer, I am going to take off outside render to see damage. A gale blows through around the windows so i guess the best place to start is there. Do I take all render off ? Also, could I get some advice on sort of render to put up ? Can I repoint myself or should I get the experts in to repoint too ?