Do not simply smear caulk over the crack. Caulk is for joints, not for structural gaps. Follow this hierarchy of repair.
Wipe the area with rubbing alcohol or PVC cleaner to remove oils and dirt.
Do not simply smear caulk over the crack. Caulk is for joints, not for structural gaps. Follow this hierarchy of repair.
Wipe the area with rubbing alcohol or PVC cleaner to remove oils and dirt.
Do not simply smear caulk over the crack. Caulk is for joints, not for structural gaps. Follow this hierarchy of repair.
Wipe the area with rubbing alcohol or PVC cleaner to remove oils and dirt. cracks on window sill