No, you should renew your home insurance policy even if your home has defective concrete blocks. While our home insurance policies exclude claims arising from faulty workmanship, defective design and the use of defective materials, they still provide insurance for other things.
With Allianz home insurance your policy offers benefits such as home emergency assistance as well as cover for damage caused by insured perils such as fire, storm, flood, theft etc. as standard. There are also several optional extras you can add to your policy to tailor it to your specific needs.