I need a roofer to re-lay 1 set of sloping ridge tiles and re-mortar 2 valleys either side of the front gable of a1930's semi. Seems the builder that did them 10 years ago was a little too fond of sand...... Having a 'mare finding one to come and give me a quote or even a scaffolder to give me a reasonable quote so that I could do it myself. Any recommendations would be appreciated. Thanks