Who This Checklist Is For
If you're specifying Karndean for a commercial or high-end residential project and you're not doing this every day, this list is for you. I put it together after a particularly painful job in Q2 2024 where we installed the wrong collection for the subfloor condition—a $3,200 mistake that took three weeks to rectify.
This isn't theory. It's four checks I now run on every Karndean order before it hits the warehouse floor.
Step 1: Lock In the Installation Method Before You Pick a Colour
I'd rather get this out of the way first. Most of the returns I've seen—including my own—started with someone falling in love with a colour and picking the installation system as an afterthought. That order of operations will cost you.
Karndean offers four primary installation systems: glue-down (LVT), Korlok click, LooseLay, and some collection-specific variants like the Knight Tile range. Your subfloor condition dictates which one you can use.
Check your slab moisture. If you're over 85% RH on a concrete subfloor with no moisture barrier, loose-lay or glue-down can work, but Korlok click is a hard no. I learned this in 2021 when I approved a Korlok order for a basement slab that was reading 92%. The flooring cupped within 60 days.
For a typical retrofit over existing tile, glue-down is usually your safest bet if the substrate is sound. If you're working on a floor with slight leveling issues, LooseLay handles minor imperfections better. Korlok is great for floating installations—think above-grade, no moisture issues.
Pick your system first. Then browse Karndean wood flooring colours. Trust me.
A Quick Rule of Thumb
If the floor is commercial (waiting areas, corridors), go glue-down. If it's a rental or a space requiring easy replacement, go LooseLay or Korlok. The rest is aesthetic.
Step 2: Cross-Reference Your Subfloor Prep Budget
Here's where the real math happens. Karndean's product cost per square foot is one number. The total installed cost is a different animal.
I once took a client through a quote breakdown for a 2,500 sq ft project. The Van Gogh collection itself ran about $5.80/sq ft. But we had to self-level the entire slab, patch cracks, and wait for moisture readings to stabilise. That added another $1.20/sq ft in labour and materials. Had I not flagged that in the initial spec, the client would've assumed the $5.80 figure was their all-in number.
The most frustrating part of this process: installers who quote by the foot but don't include subfloor prep in their initial scope. You'd think it would be standard, but it's treated as a separate line item by roughly 60% of the contractors I've worked with.
Calculate TCO upfront. Total cost = product + adhesive (if glue-down) or underlayment (if Korlok) + subfloor materials + waste factor (7-10% for plank, 12-15% for herringbone) + labour.
Pro tip: Karndean herringbone vinyl flooring runs higher waste due to pattern matching. Budget 15% waste for any herringbone layout, minimum.
Step 3: Verify Colour Across Multiple Lighting Conditions
This one seems obvious. You'd be surprised how often it's skipped.
In September 2023, I approved a spec for a Karndean Designflooring colour called "Classic Oak" based on a 3x3 inch sample under the halogen lights of a showroom. It looked warm, golden, inviting. Installed in a north-facing room with cool LED track lighting, it looked flat and almost grey. The client hated it. We pulled the floor, lost a week, and ate the removal cost.
Now, I take physical samples to the job site and check them at three times of day: morning (8-10 AM), noon, and late afternoon (2-4 PM). If you can, bring a colour meter or at least photograph the sample next to a known reference (like a Pantone card) in each condition.
Karndean wood flooring colours like "Burnished Oak" or "Smoked Oak" can shift dramatically. The grey-beige tones in particular look completely different under incandescent versus daylight-balanced LEDs.
What I do now: take a photo of the sample next to a white sheet of paper in the same room. If the white paper looks blue, you know the lighting is cool. If it looks yellow, it's warm. That gives you a baseline to compare the sample's actual colour.
Step 4: Confirm Cleaning and Maintenance Specs for the End User
I didn't think about this until a customer called three months after install, complaining of a cloudy film on their LVT. Turned out they were using a wax-based cleaner that's fine for hardwood but leaves a residue on vinyl.
Karndean specifies pH-neutral cleaners only. Their floor care kit is formulated for their wear layers. Generic all-purpose cleaners—especially ones with lemon or pine oil—can dull the urethane finish over time.
The fix is simple: include a care card with every install. List what to use, what to avoid, and where to buy the approved cleaner. Takes five minutes, saves a headache.
Also worth noting: for Karndean herringbone vinyl flooring, avoid steam mops. The heat and moisture can weaken the adhesive in a glue-down install and penetrate the seams in a click-lock floor.
Notes and Common Mistakes
Timestamp: This was accurate as of late 2024. Karndean updates collections and spec sheets seasonally, so verify current adhesive recommendations and warranty details before a big order.
Sample limitation: My experience is based on roughly 150 projects over the last six years, mostly in commercial office and multi-family residential. If you're working on a high-moisture environment (think semi-covered porch or mudroom), your precautions may differ.
One more thing: Karndean's wear layer thickness matters. For residential, 12-20 mil is fine. For commercial (especially retail flooring), 28 mil or higher is industry standard. I once ordered floor for a boutique clothing store and skimped on the wear layer to save $0.40/sq ft. After nine months, the high-heel traffic zones showed visible scuffing. Not catastrophic, but enough that I had to go back and spot-replace.
Needless to say, I don't skimp on that anymore.
