I wanted to replace our circa 1970 windows without causing damage to the stucco on the outside walls. Several companies said it was not possible to do this. Centra Windows inspector came and estimated for the replacement windows with vinyl low 'E' Argon Gas filled windows. Their crew came and covered the house floors with dust covers and took only 6 hours to do all the installation. No mess and we had no cleaning to do after they left. The working crew had a wonderful routine for each window's removal and preparation for the next step in the process. An excellent crew and the difference in how quiet and draught free our home is amazing. Our home has gone from an energy efficiency rating of 69 to 82! Not bad for a 70's home. We are delighted with the fact no damage was done to the stucco and no patching up at all. The inspector called after the installation before I paid to see we were absolutely satisfied. Two years later and we have a friend who was recommended to this company and he is equally satisfied with there work. I would definately recommend and use this company again.