Packer (Injection Port)
A mechanical fitting installed into a drilled hole that seals against the hole wall and provides a connection for injecting resin under pressure.
On an actual building
Holes are drilled at an angle so they intersect the crack at mid-depth, and spacing is set at roughly half the section thickness so resin fronts overlap inside the structure.
What we most often have to correct
That ports go straight down the visible crack line. Drilled parallel to the crack they miss the internal path entirely — the most common error in injection work.
Where this comes up in our work
Terms that come up alongside this one
- PU Grouting
Injection of polyurethane resin that reacts with the water it meets, expanding into a foam or flexible gel and sealing the leak path from within..
- Injection Grouting
Forcing grout under pressure through installed ports into cracks, voids or honeycombed concrete to fill them and block water paths..
Packer (Injection Port) — questions we get asked
What does packer (injection port) mean in waterproofing?
A mechanical fitting installed into a drilled hole that seals against the hole wall and provides a connection for injecting resin under pressure.
Why does packer (injection port) matter on a real project?
Holes are drilled at an angle so they intersect the crack at mid-depth, and spacing is set at roughly half the section thickness so resin fronts overlap inside the structure.
What do people commonly get wrong about packer (injection port)?
That ports go straight down the visible crack line. Drilled parallel to the crack they miss the internal path entirely — the most common error in injection work.
Have a building showing this?
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