The DrainPacker system is a targeted, trenchless intervention designed to repair localized defects such as cracks, joint offsets, and small holes. By using a pneumatic packer to press a resin-soaked fiberglass mat against the pipe wall, we create a structural patch that bonds permanently to the host material. This 'surgical' approach avoids the need to reline the entire pipe when only a small section is damaged, saving both time and project costs. The silicate resin used in this process is highly resistant to water and cures quickly, allowing for rapid restoration of service.