Full HoleMole demonstration
The core-hole filling sequence, from positioning to finishing.
HoleMole · Concrete repair systems
HoleMole.
Core-hole filling.
From above.
Meet HoleMole: the collapsible steel former that supports concrete core-hole repairs from the working level above the slab.
Lower the Mole, secure the stand and place your specified repair material. Reduce the need to board up the opening from the floor below.
For contractors, M&E teams and building maintenance projects.
5 Mole sizesFor a range of measured concrete openings
2–12.5in / 50–317mm openingsApproximate metric range; see the size guide below
Reusable application toolsMole Stand, SpeedNut and Speed Chute
A different way to make good
Support the repair.
Stay on the working level.
HoleMole creates a base beneath a concrete core hole. Its perimeter flaps fold to pass through the opening, then open beneath the slab. Pulling the rod upwards brings the former into position.
01
Collapsible steel former
The galvanised-steel Mole remains beneath the completed repair.
02
Controlled support from above
The Mole Stand and SpeedNut hold the assembly while the repair material is placed.
03
Tools ready for the next opening
Remove the reusable tools after the material reaches the required set.
The floor-slab method
Three stages. One working level.
A practical overview. Follow the manufacturer’s instructions, site specification and repair-material requirements for the complete installation.
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01Prepare & position
Measure and prepare the opening. Attach the threaded rod, pass the correctly sized Mole through the core and draw it back against the underside.
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02Secure from above
Position the stand, guide the rod into its slot and secure it with the SpeedNut. Include reinforcement where the project specification requires it.
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03Fill & finish
Fit the Speed Chute, place the specified fill and finish the surface. Once the required set is reached, remove the tools and finish the rod as instructed.
See the equipment in use
Watch before you specify.
Installation and comparison videos from AC Cable Solutions. Select a video to load the YouTube player.
Choose by the opening
Five sizes. Find your fit.
Measure the clear concrete opening, rather than the nominal pipe or cable size. Individual Moles include a 24in (approximately 610mm) threaded rod.
2–3in / 50–75mm openings
HoleMole #1
50–75mm
Compact former for smaller concrete cores.
£18.00
Buy now
3–4.5in / 75–115mm openings
HoleMole #2
75–115mm
Bendable tabs help position the former.
£19.20
Buy now
4.5–6.75in / 115–170mm openings
HoleMole #3
115–170mm
The middle size in the five-size range.
£21.60
Buy now
6.75–9.5in / 170–240mm openings
HoleMole #4
170–240mm
Stability ribs add stiffness to the larger former.
£25.20
Buy now
9.5–12.5in / 240–317mm openings
HoleMole #5
240–317mm
The largest standard Mole, with stability ribs.
£27.60
Buy nowView the size and specification table
| Mole | Opening range (inches) | Approx. metric range (mm) | Features |
|---|---|---|---|
| #1 | 2–3in | 50–75mm | Compact smallest size |
| #2 | 3–4.5in | 75–115mm | Bendable positioning tabs |
| #3 | 4.5–6.75in | 115–170mm | Bendable positioning tabs |
| #4 | 6.75–9.5in | 170–240mm | Positioning tabs and stability ribs |
| #5 | 9.5–12.5in | 240–317mm | Positioning tabs and stability ribs |
Metric bands follow the UK catalogue’s rounded labels. Manufacturer ranges are specified in inches; confirm fit at range boundaries and ensure the Mole seats correctly against sound concrete. Moles are 16-gauge galvanised steel.
Set your team up
The Contractor
Starter Kit.
A practical starting point for teams repairing a mix of core-hole sizes. Keep the Moles and reusable application equipment together between jobs.
- All five standard Mole sizes
- Mole Stand with SpeedNut
- Speed Chute and threaded Mole rods
- Contractor storage bin
View the product page for supplied quantities and kit configuration. Repair material is not included. Discuss wall-application equipment separately.
£466.80
Buy Starter Kit nowBuild your system
The right tool for each stage.
Application equipment and replacement components for floor and wall repairs.
Floor applications
Mole Stand with SpeedNut
Reusable three-legged steel support for holding the Mole beneath a slab.
£119.94
Buy now
Wall applications
Wall Applicator with SpeedNut
Use the dedicated applicator for suitable vertical concrete openings.
£119.94
Buy now
Material placement
Speed Chute
Formed aluminium chute guides the specified repair material into the core.
£41.94
Buy now
Quick positioning
SpeedNut
Push the plunger to slide along the rod, then release and turn to tighten.
£29.94
Buy now
Rod connection
¼in-20 Coupling Nut (6.35mm nominal diameter)
Joins compatible threaded Mole rods where an extended assembly is needed.
£0.84
Buy nowKeep the technical information to hand
HoleMole product brochure.
The manufacturer’s overview of the system, components and installation sequence.
A few useful answers
Before you get started.
Need help choosing a size or planning a project order? Share the opening dimensions and application with our team.
Speak to DuctSealWhat is HoleMole used for?
HoleMole supports the filling of concrete core holes. A collapsible steel former passes through the opening and is drawn back against the underside, where it supports the selected repair material.
Which Mole size do I need?
Measure the actual clear opening and compare it with the manufacturer’s opening range. Check seating and overlap, particularly at size boundaries. Share your measurements with us if you need help selecting a former.
Can HoleMole be used in walls?
Suitable vertical openings use the dedicated Wall Applicator and the manufacturer’s wall-installation method. Sizes #2–#5 have bendable positioning tabs. Confirm the substrate, fixings and repair material for the application.
Which parts stay in the repair?
The Mole and its rod are consumable parts of the repair. The stand, SpeedNut and chute are removed after the specified set, then cleaned and inspected for reuse.
Is repair grout included?
No. Specify the repair grout, mortar or other compatible filling material separately to suit the concrete, opening and required project performance.
Does HoleMole provide a fire-rated or watertight seal?
HoleMole is a forming and support component. It does not by itself establish fire resistance, structural capacity, gas tightness or water resistance. The completed repair must meet the relevant project specification using a suitable complete system.
How do I buy HoleMole products?
Select Buy now on a Mole, accessory or Starter Kit to open its product page, choose your quantity and add it to your basket. For international delivery questions or larger project orders, contact our team below.
Technical advice · International delivery support
Need a little
extra guidance?
Buy individual Moles, tools and the Starter Kit directly from their product pages. For technical guidance, larger project quantities or international delivery, speak to our team below.
For a useful quotation, include hole diameter, slab or wall thickness, quantity and delivery location. Tell us about any specified fire, structural or sealing performance.