Shingles are largely made from asphalt and petroleum Hy products that have become scares in the past couple of years.
Even once the shingle supply gets back to normal, there will be the issue of logistics. Transportation and distribution have also seen labor shortages from the pandemic
Worldwide inflation has been on the rise consequently this will impact the cost of supplies, labor therefor Cost increase in services and products.
Wait and delivery time will also feel a huge impact from an average of 6 to 8 weeks for installation timelines for roof projects.