A Flooring Buying Checklist: What Your Supplier Must Tell You Before You Order

Helen Clark
1 day ago
4 min read

Buying engineered oak flooring isn’t just about choosing a colour. Before you place an order, there are technical details your supplier should clearly explain — especially if you want a floor that lasts decades, not years.

At JS Woodcraft Flooring, we finish our boards in-house in Yorkshire, so we believe customers should understand exactly what they’re buying.

1️⃣ Wear Layer Thickness – The Most Important Number on the Spec Sheet

If there’s one thing to ask your supplier, it’s this:

How thick is the real oak top layer?

At JS Woodcraft, our most popular constructions are:

16/4mm – 16mm total thickness with a 4mm solid European oak wear layer
20/6mm – 20mm total thickness with a 6mm solid European oak wear layer

Why does this matter?

The wear layer determines:

✔ How many times the floor can be sanded✔ Its long-term durability

✔ Its lifetime value

✔ Its suitability for commercial settings

A 4mm wear layer (16/4mm) already offers excellent longevity and can typically be sanded and refinished multiple times in the future.

A 6mm wear layer (20/6mm) provides even greater lifespan — ideal for:

Heavy domestic use
High-end properties
Commercial spaces
Wide plank or long-length formats

If a supplier avoids stating the wear layer thickness clearly, that’s a red flag.

2️⃣ Core Quality – What’s Beneath the Oak?

Engineered flooring is only as strong as its core.

The base layers beneath the oak veneer control:

Stability
Movement resistance
Suitability for underfloor heating
Long-term structural integrity

At JS Woodcraft, we use high-quality birch multi-ply core bonded to European oak.

This ensures:

✔ Minimal movement

✔ Greater stability than solid oak

✔ Compatibility with underfloor heating

✔ Structural reliability in wider boards

Cheap alternatives often use lower-grade plywood or softwood layers, which can compromise stability.

Ask your supplier:

Where is the board manufactured?
What type of core is used?
Is it suitable for underfloor heating?
What is the moisture tolerance?

If they don’t know — they’re likely reselling.

3️⃣ Colour Sampling – Why the Sample Isn’t the Whole Story

Colour is where most buying mistakes happen.

Here’s what your supplier should explain:

Lighting changes everything

North-facing rooms, south-facing rooms, artificial lighting — all alter tone perception.

Grade affects appearance

Rustic boards show more knots and variation, prime grade is cleaner and more uniform.

Bespoke finishing varies slightly

Because oak is a natural product, every board absorbs oil differently.

At JS Woodcraft, we:

Produce fresh samples
Offer sample boxes
Finish boards in-house
Control colour consistency at our Yorkshire factory

Ask:

Is this sample from a production batch?
How much natural variation should I expect?
Can I see the grade in a larger format?

4️⃣ Lead Times – Especially for Bespoke Floors

Not all engineered oak flooring is off-the-shelf.

At JS Woodcraft:

All products are finished to order
Choose, the width, thickness, grade, bevel, texture and finally the colour - Truly bespoke
Stair cladding is templated and manufactured in-house

A supplier should clearly state:

✔ Production time

✔ Finishing time

✔ Delivery schedule

✔ Whether the boards are stock or made-to-order

Quick shipping isn’t always a good sign — especially if you’re expecting bespoke quality.

5️⃣ 16/4mm vs 20/6mm – Which Should You Choose?

Here’s a simple guide:

✅ Choose 16/4mm if:

You want excellent durability at a competitive price
It’s a residential setting
Standard plank widths are being used
You want underfloor heating compatibility

✅ Choose 20/6mm if:

You’re installing wide planks (e.g., 220mm–300mm)
It’s a commercial environment
You want maximum future re-sanding capability

Both constructions provide stability and longevity when manufactured properly.

6️⃣ Board Length & Width – The Hidden Premium Factor

Thickness isn’t the only number that matters.

Length and width dramatically affect the look, stability and value of your floor.

At JS Woodcraft, we offer:

Standard plank lengths around 1.9m–2.2m from our Core range
Long-length planks up to 2.8m from our Elite range
Widths ranging from 100mm to 300mm

Why length matters

Longer boards:

✔ Create a more seamless, flowing appearance

✔ Reduce visible joins

✔ Elevate the overall aesthetic

✔ Feel more premium in larger rooms

Short, random-length boards can look busy and less refined — especially in open-plan spaces.

Wide Boards Require Stronger Construction

When you move into wider formats (220mm–300mm), stability becomes even more important.

This is where 20/6mm construction with a 6mm wear layer and high-quality birch multi-ply core really shows its value. Wider and longer boards require superior engineering to minimise movement and ensure long-term performance.

If a supplier offers very wide boards at a surprisingly low price, ask:

What is the wear layer thickness?
What core is being used?
What are the actual board lengths?
Are they fixed long lengths or heavily nested?

Final Checklist Before You Order