Frequently Asked Questions London Roofing London Q1. Are you a BBB member? Q2. What is Drip edge? Do I really need it? Q3. Do you have any references? Q4. What are hip/ridge capping shingles? Q5. What are “starter shingles”? Q6. What is roofing felt? Do I really need it? Q7. Can you go over top my existing roof rather than tearing off the roof before installing new roof? Q8. How bad is my roof, do you think I need a new one? Q9. What is Ice and Water shield? Do I really need it? Q10. How many vents does my roof need? Q11. Is your company insured? Q12. Do you have WSIB coverage? Q13. Does the color of my roof affect how long my roof is good for? Q14. Do I have to be home while my roof is being completed? Q15. How long does it take to complete my roof? Q16. Do you provide free estimates?