How to Remove Purple Primer Stains From Concrete (PVC Cement Trick)
Spilled purple PVC primer on the garage floor? Wiping alone leaves a stain. This plumber's trick uses PVC cement on a rag to lift purple primer off concrete — fast, cheap, and it actually works.
🧰 Tools for this repair
Quick links to the gear I use on this job.
- Purple Primer Cement Combo
Price:$11.75
Order now at
Video Tutorial
Quick overview
Steps at a glance
Estimated time: 5 min
- 1
Blot the spill right away
Wipe fresh purple primer with a dry rag as soon as you can — but expect a faint stain to remain even after a quick cleanup.
- 2
Use PVC cement on a clean rag
Dampen a fresh rag with PVC solvent cement (the glue, not the primer) and rub the stained concrete in small circles.
- 3
Lift the stain onto the rag
The purple transfers from the floor to the rag. Rotate to a clean section of rag and repeat until the stain is gone.
- 4
Ventilate and dispose safely
Work with the garage door open, wear gloves, and let the floor dry before you walk equipment over it.
If you run PVC pipe — plumbing, sprinklers, HVAC drains — you know the mess. Purple primer preps the joint, PVC cement welds it, and one slip leaves a bright purple tattoo on your concrete that a paper towel never fully fixes.
I filmed this fix on my YouTube channel years ago and it still gets questions: “How do you get purple primer off the garage floor?” The answer is counterintuitive — you use the cement, not the primer, on a rag.
In this guide, I’ll show you:
- Why purple primer stains stick around
- The cement-on-a-rag trick step by step
- What surfaces it works on (and what to avoid)
- Safety basics for solvent cleanup
- The combo pack I keep for repairs and cleanup
Why Purple Primer Stains Concrete
Purple PVC primer (often labeled “primer and cleaner”) is dyed so you can see where you prepped the pipe and fitting. That dye is meant to be visible — which is great for joints and terrible for your slab.
When you spill:
- Fresh spill — you can blot most of it, but a ghost stain usually remains.
- Dried stain — water and soap barely touch it. You need a PVC-compatible solvent.
- Wrong fix — pouring more primer spreads the purple. Scraping gouges the concrete.
The trick from the video: solvent cement softens the cured primer enough to transfer it from the floor to your rag.
What You Need
- PVC solvent cement (the glue — medium or clear body is fine for cleanup)
- Clean rags you can throw away — cotton shop towels work
- Gloves — nitrile or chemical-resistant
- Ventilation — open garage door, fan if you have one
- Purple primer + cement combo for the actual job — I use the Purple Primer Cement Combo so both bottles are already on the truck
You do not need a wire brush, pressure washer, or paint stripper for a typical primer drip.
Step-by-Step: Remove Purple Primer From Concrete
Step 1 — Blot fresh spills immediately
If the primer is still wet, hit it with a dry rag. Get what you can. Do not smear it into a bigger puddle.
Even with a fast wipe, expect a faint purple mark. That is normal — that is what we fix next.
Step 2 — Dampen a clean rag with PVC cement
Pour a small amount of cement into the cap or onto a rag — not onto the floor.
You want the rag damp with solvent, not dripping a puddle across the stain.
Important: Use cement/glue, not purple primer. Primer adds purple. Cement dissolves it.
Step 3 — Rub the stain in small circles
Press the rag on the stain and work small circles, same motion as cleaning a bench top.
You should see purple transfer onto the rag. Move to a clean section of towel and repeat.
On the video floor, the stain disappears from the concrete once the cement lifts the dye — it ends up on the rag instead of smeared around the shop.
Step 4 — Let it flash off and ventilate
Solvent cement evaporates fast. Leave the door open until the spot is dry and the smell clears.
Dispose of rags safely — solvent-soaked towels can be a fire hazard. Spread them flat to dry outdoors or follow your local hazardous waste guidance if you soak a lot.
Watch the Full Demo
The embed above is the original 59-second shop demo — spilled primer, quick wipe, cement on a rag, stain gone. Same combo pack I link below.
If you are on mobile, the short also lives at YouTube.
Where This Works (and Where It Does Not)
Works well on:
- Bare garage slabs and unfinished concrete
- Shop floors where you already use PVC products
- Small drips and footprints from primer cans
Use caution on:
- Painted or epoxy-coated floors — test a corner first; solvent may soften the coating
- Asphalt or paver joints — chemistry is different; spot-test only
- Clothes and skin — this article is about concrete. For hands, wash immediately when wet; for fabric, pretreat before the heat of a dryer
Safety Notes (Do Not Skip)
PVC cement is flammable and fume-heavy:
- No open flames, welders, or water heaters firing nearby while you work
- Gloves — primer and cement dry skin fast
- Eye protection if you are working overhead and dripping is possible
- Kids and pets out of the garage until fumes clear
This is standard shop practice for plumbers and HVAC techs — short cleanup, good airflow, done.
The Combo Pack I Use
For repairs and cleanup, I keep primer and cement in one kit:
Purple Primer Cement Combo
- Purple primer for proper joint prep
- PVC cement for welds — and the concrete cleanup trick in this guide
- Handy size for service calls and garage projects
👉 See my Purple Primer Cement Combo pick (Amazon affiliate link)
DIY Veteran Tips
- Cap your cans — most stains happen when the primer brush drips on the way to the pipe
- Cardboard under the joint — cheap insurance on finished slabs
- Dedicated cleanup rag — do not reuse the cement rag on pipe joints
- Label your rags — purple on a white towel looks like a crime scene; toss it when done
- Film the before/after — this one is satisfying to show apprentices
Final Thoughts
Purple primer on concrete looks permanent until you know the trick: PVC cement on a rag lifts the stain when a wet wipe alone fails. It is the same reason the products share a shelf — compatible solvents, opposite jobs.
Watch the demo above, grab the Purple Primer Cement Combo if you need both bottles anyway, and keep a rag handy next time the primer brush drips.
Got a different stain or surface? Drop a comment on the video — I answer shop-floor cleanup questions there first.
Creator picks
Tools & products for this job
Gear I reach for on this kind of repair. Each links to my full review where available.
Purple Primer Cement Combo
This is the perfect combo pack for your plumbing repairs and installs.
Price:$11.75
Order now atAs an Amazon Associate, I earn from qualifying purchases at no extra cost to you. Links open Amazon's secure site — we never see your payment info.
Quick answers
