A specialized roof-repairs-contractor also understands the importance of "underlayment," the secondary water barrier beneath your shingles. If this layer is damaged, even brand-new shingles won't stop a leak. During a repair, they will often strip back a small area to inspect this membrane and replace it if it shows signs of rot or wear. This "belt-and-suspenders" approach to waterpro... https://kkroofspecialist.com.sg/roof-repairs-contractor/