Close-up · resin at the packer
Resin coming out of the crack beside the packer. Move to the next one.
INJEXA SWM 1300 Crack Injection and Grouting Pump
A compact drill-driven piston pump that injects ACTFLEX PU resin, acrylic gel and epoxy into concrete cracks at up to 300 bar. Stops active leaks in basements, lift pits, balconies and retaining walls from the inside, with no digging. 2.5 L tank, 5 m quick-connect hose and an auto-clean mode.
300barMaximum
0.6L/minResin flow
2.5LTank
700WDrill drive
$2,200.00
Out of stock, back soonInc. GST. Out of stock? Call (02) 8021 3517 for the next delivery, or see the SWM 1500, in stock now. Not sure how much resin? Use the calculator.
Pump, 5 m hose + gun
Build the kit
Frequently bought together
Total
One system: INJEXA pump + ACTFLEX resinExpert advice: (02) 8021 3517Fast delivery Australia wideHalf-day injection course, $50
Watch it · every step, start to finish
Stop a leaking crack from the inside
Find the leak, drill at 45°, set and tighten the packers, charge the SWM 1300, inject bottom up until the PU foams out, clean it, then pull the packers and patch. From the SWM 1300 manual and the ACTFLEX PU data sheets.
On Instagram
@jn.waterproofing · 28 Aug 2026
A live leak in a tank wall, sealed watertight.
Water running through the wall, packers in, ACTFLEX PU500 pumped in until it foams out of the crack. High pressure into a tight crack, one packer at a time: the work the SWM 1300 is built for.
- Done from the inside. No digging, no excavation.
- Up to 300 bar for tight cracks.
- Same packers, coupler and resin as this page.
Resin calculator
How much resin for your crack?
m
mm
mm
Crack volume = length × width × depth. The PU data sheets give no fixed rate per metre: estimate from the crack volume plus an allowance for porous zones, then check it on the first section. Packers every 200 mm, the most the TDS allows.
Build your kit
Everything for the first job, in one go
Your resin and packers from the calculator are already in. Change any quantity, tick what else you need, and add it all at once. Machine showing Back soon? Call (02) 8021 3517 to order it.
The machine
Resin
Packers & fittings
Hose & handle
Prep, patch & safety
Skills
Which machine
Where the SWM 1300 fits
The 1300 gives you machine pressure, up to 300 bar, in a compact 8 kg unit. Step up to the 1500 when you need more flow and a bigger hopper for whole basements.
| INJEXA SWM 1300Compact, high pressure | INJEXA SWM 1500More flow, bigger hopper | INJEXA SWDM 2500Two-part structural epoxy | |
|---|---|---|---|
| Job | Small to medium leaks | Active leaks, whole basements | Structural cracks, dry |
| Pressure | Up to 300 bar | 5–250 bar | 5–25 bar (ER300) |
| Flow | 0.6 L/min | 1.0 L/min | Metered A + B |
| Hopper | 2.5 L | 6 L | Twin tanks |
| Weight | 8 kg | 15.5 kg | – |
| Resin | PU, acrylic gel, epoxy | PU200 / 300 / 500 | ER300 epoxy |
| Price | $2,200 | $3,740 | $4,000 |
| View 1500 | View SWDM |
What the resin does in the crack
Water in the crack makes PU200 grow
PU200 is a water-stop resin. It reacts with the water already in the crack and foams up to fill the leak path, so it needs water to work. Dry cracks get pre-wetted through the packers first.
PU200Hydrophobic. Foams 8–20× and stops active leaks fast
PU300Two-pack. The accelerator dose sets the reaction time
PU500Hydrophilic and flexible, for cracks and joints that move
- Low viscosity, 500–600 mPa·s, so it runs into fine cracks
- Solvent-free and low odour for basements and tunnels
- Water-stop only. For a structural repair, use ER300 and the SWDM 2500
Technical detail · SK-STD-INJ-01
Drawn up and spec-ready
Packer spacing, drilling angle and the resin path, drawn to the FORSPEC standard. Hand it to the builder or the engineer and the job is specified before you arrive.
- 10 mm holes, angled at 45°, offset from the crack
- Cross the crack 60–100 mm in
- One packer every 200 mm at most, alternating sides
The rules · from the SWM 1300 manual and the PU data sheets
Flush it, or lose it
Never water in the pumpIt corrodes the piston and voids the warranty. Flush with ACTFLEX FLUSH or urethane thinner.
Charge it two-thirdsAbout 1.7 L in the 2.5 L tank, then fit the lid.
Set the pressure to the resinPU200 and PU300 80–150 bar, PU500 60–100 bar, epoxy 100–200 bar. Never past 300.
Lock the triggerStart the drill and press the auto-lock so the pump runs hands free.
Auto-clean after every jobRun ACTFLEX FLUSH through the piston and hose, then 50–100 ml of engine oil for 30 seconds.
Never overnightResin left in the hose sets and blocks it for good.
How-to
How-to · @thewaterproofingshop1 · 2 Jul 2026
How to stop your injection machine clogging.
In damp conditions resin starts to thicken while you work. Keep it moving, and flush the pump and hose properly at the end of every job.
- Flush, never water
- Oil it before it goes in the van
- Same rules for every INJEXA pump
On site
On the job, and on our training floor
Leaking ceilings and walls, done with INJEXA pumps and ACTFLEX resin. Tap to play, sound on.
Close-up · packer injection
Coupler on the packer and resin pushing out along the crack beside it. That's the leak path filling.
Overhead · ceiling crack
Injecting a ceiling crack from below. The non-return packers hold the resin in while it reacts.
FORSPEC Training Centre
Inside one of our crack injection courses. Which resin, where the packers go, and how to stop active water.
JN Waterproofing · ceiling cracks injected with ACTFLEX PU500
@jn.waterproofing · 13 Aug 2026 · View post
FORSPEC Training Centre
Half a day on the rig.
Every leak after, sealed right.
For this machineHalf day · hands-on · certificate
Injection Systems: Crack Repair & Leak Sealing
Hands-on resin injection: when to inject, which resin for which leak, where the packers go and how to stop active water. You leave with a certificate of completion.
$50See course
Best seller1 full day · hands-on, real rigs
Practical Waterproofing Course
A full bathroom, start to finish, on a real rig: moisture check, primer, bond breakers, membrane at the right thickness, flanges sealed. We show you, then you do it.
$214See course
Reading the crackActive leak or dry, moving or still, and when injection is the right fix.
Picking the resinPU200, PU300 or PU500 for water, ER300 when it has to be structural.
Drilling & packers45° holes, crossing the crack 60–100 mm in, packers every 200 mm.
Running the pumpCharging, priming, pressure, recirculation and flushing.
Stopping live waterPre-wetting, bottom-up injection and HYDROPLUG.
FinishingPacker removal, patching the holes and recording the job.
- Pick the right resin for the leak
- Set out and drill a packer line
- Run and flush an injection pump
- Stop an active leak from the inside
- Patch and finish the face
- Quote injection work with confidence
Next on the job
Finish it, or step up
Once the leak is stopped, patch the holes. If the crack has to carry load, that's epoxy, not PU.
FORBUILD 100Repair mortar the PU data sheets name for patching the packer holes$88In stock
ACTFLEX HYDROPLUGHand-set leak stopper, sets in 2–4 minutes against running water$220In stock
CRACKLOCK E400LUltra-low-viscosity epoxy for hairline cracks$110In stock
INJEXA SWM 1500More flow and a 6 L hopper for whole basements. In stock$3,7403 in stock
Questions
Before you buy
SWM 1300 or SWM 1500?
Both inject ACTFLEX PU resin. The 1300 is lighter (8 kg) and goes to a higher peak pressure, 300 bar. The 1500 moves about 1.7 times the resin per minute and holds 6 L, so it suits whole basements and big car park jobs.
What pressure do I run?
Set it to the resin: PU200 and PU300 at 80 to 150 bar, PU500 at 60 to 100 bar, epoxy at 100 to 200 bar. Never go past 300 bar. Pump each packer until resin shows about 100 mm either side, then move to the next.
Which resin should I use?
PU200 for running water: it foams 8 to 20 times on contact with water. PU300 when you want to set the reaction time with the accelerator. PU500 for cracks and joints that move. For a structural repair of a dry crack, use ACTFLEX ER300 with the INJEXA SWDM 2500.
How much resin do I need?
The PU data sheets don't give a fixed rate per metre. Work out the crack volume (length × width × depth), add an allowance for porous concrete, and check it on the first section. The calculator on this page does that for you.
How do I clean it?
Run the auto-clean mode with ACTFLEX FLUSH through the piston and hose, then 50 to 100 ml of clean engine oil for 30 seconds. Never use water: it corrodes the piston and voids the warranty.
What do I fill the packer holes with?
Once the resin has fully reacted (24 hours at 25 °C), take the packers out and patch the holes flush with FORBUILD 100 repair mortar, as the PU data sheets say. If water is still running from a hole, stop it first with ACTFLEX HYDROPLUG.
It's out of stock. Can I still order?
Call our team on (02) 8021 3517. We'll give you the next delivery date, or move you to the SWM 1500, which is in stock.
Not sure it's right for your job?
Call our team on (02) 8021 3517 and tell us about the crack. We'll tell you the machine, resin and packers to use.
About the SWM 1300
- What it is
- A compact drill-driven piston pump that injects PU, acrylic gel and epoxy into concrete cracks, at up to 300 bar.
- Why it is used
- To stop active leaks and seal cracks from the inside in basements, lift pits, balconies and retaining walls, with no digging.
- Built to last
- Steel piston pump with a pressure regulator, 2.5 L tank, 5 m quick-connect hose and an auto-clean mode that runs ACTFLEX FLUSH through the piston.
Which resin
- PU200 for running water, at 80–150 bar
- PU300 when you want to set the reaction time, at 80–150 bar
- PU500 for cracks that move, at 60–100 bar
- Structural crack, no water? That's ER300 and the SWDM 2500
How to use the SWM 1300
Drill
10 mm holes at no more than 200 mm along the crack, offset from it and angled at 45° so they cross it 60–100 mm in. Alternate sides where you can. Blow or vacuum every hole clean.
Set the packers
Push in a 10 mm non-return packer, leaving about 20 mm proud. Tighten it firmly with the T-handle so the rubber sleeve seals against injection pressure.
Pre-wet dry cracks
PU needs water to react. If the crack is dry, pump clean water through the packers first.
Charge and set
Never water in the pump. Fill the 2.5 L tank about two-thirds and fit the lid. Set the pressure to the resin: PU200 and PU300 80–150 bar, PU500 60–100 bar. Start the drill and press the auto-lock.
Inject
Build up slowly, never past 300 bar. Vertical cracks bottom up, horizontal ones from the ends to the middle. Pump each packer until resin shows about 100 mm either side, then move on. Don't over-inject.
Clean, cure, patch
Run auto-clean with ACTFLEX FLUSH, then 50–100 ml of engine oil. After full reaction (24 hours), remove the packers and patch the holes flush with FORBUILD 100.
From the INJEXA SWM 1300 manual and the ACTFLEX PU TDS R2. Times at 25 °C, 50% RH. Don't inject below 10 °C.
Specs & technical data
- Drive
- 700 W, remote drill trigger with auto-lock
- Maximum pressure
- 300 bar
- PU200 / PU300
- 80–150 bar
- PU500
- 60–100 bar
- Epoxy
- 100–200 bar
- Flow
- 0.6 L/min, fixed
- Tank
- 2.5 L. Charge about 1.7 L
- Hose
- 5 m, quick-connect
- Materials
- PU, acrylic gel, epoxy, fine cement grout
- Weight
- 8 kg
- Cleaning
- ACTFLEX FLUSH auto-clean, then engine oil. Never water
- Packers
- 10 mm non-return, every 200 mm max
- PU200 foaming
- 8–20× (water-contact dependent)
- Full reaction
- 24 hours
- SKU
- IINF596
Machine values from the INJEXA SWM 1300 manual. Resin values from ACTFLEX PU TDS R2 (12 Aug 2026), typical at 25 °C and 50% RH.
Downloads
PDFINJEXA SWM 1300 manualSet-up, pressures, cleaning
TDSACTFLEX PU200Hydrophobic, stops active leaks · R2
TDSACTFLEX PU300Two-pack, set the reaction time · R2
TDSACTFLEX PU500Hydrophilic, for moving cracks · R2
SDSACTFLEX PU200Safety Data Sheet, 10 Mar 2025
SDSACTFLEX PU300Safety Data Sheet, 7 Mar 2025
SDSACTFLEX PU500Safety Data Sheet, 10 Mar 2025
TDSACTFLEX HYDROPLUGRapid-set leak stopper
CADSK-STD-INJ-01 packer detailDXF, Rev A, for AutoCAD / Revit
TDSACTFLEX ER300Structural epoxy, for the SWDM 2500 · R1
Resin values are typical Forspec R&D characteristic values. More on request: (02) 8021 3517.
What applicators say
JN Waterproofing sealed a live leak in a tank wall with ACTFLEX PU500, and posted the job.
@jn.waterproofing · 28 Aug 2026 · See the postJN Waterproofing injected a run of ceiling cracks with ACTFLEX PU500, resin out at every packer.
@jn.waterproofing · 13 Aug 2026 · See the postNo verified reviews on the SWM 1300 yet. Own one? Tell us how it went and we'll add your review here.
Send us your review · or call (02) 8021 3517