Many of your questions should focus on potential problems and maintenance issues. Does anything need to be replaced? What things require ongoing maintenance (e.g., paint, roof, HVAC, appliances, carpet)? Also ask about the house and neighborhood, focusing on quality of life issues. Be sure the seller's or real estate agent's answers are clear and complete. Ask questions until you understand all of the information they've given. Making a list of questions ahead of time will help you organize your thoughts and arrange all of the information you receive.
Rubber slate can be a good choice when re-roofing a Victorian. Made from the same material as car bumpers, rubber slate can last up to 100 years. The slates are flexible, predrilled and calibrated. They can be cut with a knife and installed in any weather conditions. Rubber slate is an ideal product for a steep, complex roof with turrets, valleys, and crickets.