Resin binder starts to cure within minutes of mixing. Any film left on a mixer drum, paddle or trowel hardens into a rough layer that contaminates the next batch. Cleaning your Resin Bound Tools the right way protects your equipment, keeps colour and finish consistent, and saves money on replacements. This guide covers every stage, from cleaning during the job to storage afterward.
Why Cleaning Resin Bound Installation Tools Matters?
Polyurethane and UV stable binders bond tightly to metal, plastic and rubber. Dried residue causes four common problems:
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Contamination: Cured flecks break off into fresh mixes and show as dark or hard spots in the finished surface.
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Poor mixing: Built up resin on paddles reduces the wiping action inside a forced action mixer, so aggregate coats unevenly.
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Shorter equipment life: Hardened material strains motors and wears seals and blades.
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Surface defects: A dirty trowel drags resin and drops lines or marks across the surface.
Professional installers treat cleaning as part of the installation process, not an afterthought.
Resin Bound Installation Equipment You Need to Clean?
Most crews use the following resin bound installation equipment, and each item needs its own routine:
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Forced action mixer (drum, paddles and discharge door)
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Whisk or paddle mixer for blending resin parts
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Steel or plastic trowels and the resin trowel
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Wooden lutes, rakes and spazzles
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Buckets, measuring jugs and mixing containers
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Wheelbarrows and shovels
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Brushes, scrapers and rags
Cleaning Supplies and Safety Gear
Prepare these before the first mix:
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Dry, clean aggregate (one or two bags for the mixer clean)
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Resin tool cleaner or solvent that the binder manufacturer approves
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Scrapers, a stiff brush and plenty of cloth rags
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Spare buckets for waste
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Nitrile gloves, eye protection and a respirator rated for solvent vapour
Always read the safety data sheet for your cleaner. Many solvents are flammable, so keep them away from heat, sparks and open flames. Work outdoors or in a space with strong airflow.
When to Clean Your Tools?
Clean at three points:
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Between batches: Scrape the mixer and wipe the trowel after every mix.
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During breaks: Do not leave resin on any tool for more than a few minutes, especially in warm weather.
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End of the job: Complete a full strip down and clean before packing up.
Heat speeds up curing, so on a summer job you may need to clean tools more often.
How to Clean a Forced Action Mixer?
Follow this process after each project.
Step 1: Empty the drum.
Discharge all mixed material and scrape the sides and floor while the mix is still wet.
Step 2: Run dry aggregate through.
Switch the mixer on and add one or two bags of dry aggregate. The stone scrubs wet resin off the drum walls and paddles.
Step 3: Add cleaner.
With the mixer running, pour a small amount of approved solvent onto the aggregate. Keep it controlled, because the aim is to loosen resin, not flood the drum.
Step 4: Empty and bin the waste.
Treat this material as contaminated. Never reuse it in a surface mix.
Step 5: Remove the head and paddles.
Detach them so you can reach corners and bolt areas that stay hidden when assembled.
Step 6: Wipe and scrub.
Use rags first, then a plastic scraper and brush for stubborn spots. Avoid sharp metal tools on the drum, since scratches give resin a grip next time.
Step 7: Dry and refit.
Wipe all parts dry, reassemble and close the lid.
Never use a cement mixer for resin work, and never rinse a resin mixer with water. Water reacts with polyurethane binders and leaves a hard residue.
How to Clean Trowels, Whisks and Hand Tools?
Smaller Resin Surfacing Tools need quick, regular attention:
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Trowels: Wipe with a solvent dampened rag after each pass of the surface. Keep a bucket of clean cloths nearby and swap them often.
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Whisks and paddles: Wipe wet resin off straight after blending. Spin the paddle in a bucket of cleaner for a few seconds, then wipe dry.
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Buckets and jugs: Wipe out wet resin with a rag. Plastic containers can be reused if they are clean, but discard any with a thick cured layer.
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Lutes and rakes: Wipe the working edge, since resin builds along it quickly.
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Brushes: Clean immediately. A brush with dried resin is rarely worth saving.
How to Remove Cured Resin?
If resin has already hardened, act in this order:
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Scrape off the thickest material with a plastic scraper.
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Soak the part in solvent for the time the manufacturer suggests.
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Scrub with a nylon brush and scrape again.
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Repeat until the surface feels smooth.
Do not use grinders or wire wheels on mixer blades, because they alter the blade profile and reduce mixing performance. If cured resin remains thick, replace the paddle or trowel instead of forcing a clean. A damaged tool can leave defects in a new surface.
Common Cleaning Mistakes to Avoid
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Waiting until the end of the day to start cleaning
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Using household degreasers that do not break down resin
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Washing solvent waste down drains or onto the ground
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Cleaning in a closed shed without ventilation
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Reusing cleaning aggregate in a surface mix
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Ignoring the underside of the mixer lid and discharge door
Disposal of Waste Resin and Solvent
Collect used rags, aggregate and solvent in sealed containers. Dispose of them under your local waste regulations, and check with your resin supplier if you are unsure how to classify the material. Let unmixed leftovers cure in a sealed container before disposal where regulations allow it.
Storage and Ongoing Maintenance
Good habits keep resin bound paving tools working for years:
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Store tools dry, indoors and away from direct sun.
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Lubricate moving parts and check the mixer for loose bolts or worn paddles.
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Inspect rubber seals on the discharge door each month.
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Keep a dedicated tool kit for resin work so no other trade contaminates it.
Training also helps. Crews who learn proper mixing and cleanup routines make fewer mistakes, and our Resin Bound Training covers these habits on site. For a full overview of the process, see our guide to installation steps.
Clean tools mean cleaner installs. Wipe as you work, run aggregate through the mixer, strip the paddles at the end of the day and store everything dry. These steps protect your investment and keep every surface looking professional.
At Resin Rock, we supply resin bound materials, resin bound products and the equipment installers rely on every day. As trusted resin bound material suppliers, we offer resin bound solutions and resin bound surfacing materials backed by real installer experience. Visit Resin Rock to see the full range, and speak with our team about the right resin bound installer tools for your next job.
Frequently Asked Questions
Can I use water to clean resin bound tools?
No. Water reacts with polyurethane binders and creates a hard film. Use a cleaner approved by the resin manufacturer.
How often should I clean the mixer?
Scrape and wipe after every batch, then do a full clean at the end of each working day.
Can I clean a cement mixer and reuse it for resin?
It is not recommended. Resin installation needs a forced action mixer for even coating and consistent results.
What is the best way to remove dried resin?
Scrape what you can, soak the part in approved cleaner, then scrub. Replace the tool if damage remains.
