Free samples posted anywhere in the UK✦25-year structural warranty✦The same in-house fitters for over 11 years✦Every enquiry answered within 24 hours✦Free samples posted anywhere in the UK✦25-year structural warranty✦The same in-house fitters for over 11 years✦Every enquiry answered within 24 hours✦

Our highest grade of oak. Boards are selected for minimal knots, very few natural blemishes and a consistent colour and grain, so the floor reads as one calm, even surface. The result is pure clarity: clean grain with very little to distract the eye.

Clean by nature and engineered for lasting stability, faithfully, through decades of everyday life.

The Prime Grade Collection is cut from American oak and graded hard: long, clean boards with barely a knot, in tones that stay deliberately quiet — spring rye, tulip blossom, winter snowdrop, afternoon haze.

Where our rustic floors bring character, prime grade American oak flooring brings calm; it is the grade architects specify when the room, not the floor, should do the talking.

Texture without noise Several floors in the collection carry sawn marks — fine, parallel workshop lines that catch light without adding visual clutter.

It is a way of giving a prime board texture while keeping its uniformity, and it photographs far more subtly than it feels underfoot.

Formats and next steps The collection runs in 190mm planks and 90×450mm herringbone, so a hallway can turn to pattern while the living space stays long and linear.

Order free samples to compare the tones in your own light.

Prime Grade Oak,
Answered

The questions we are asked most often.

Ask Us Anything →
What does prime grade mean?
Prime is the cleanest grade of oak: boards are selected for very few knots and an even colour and grain, so the floor reads as one calm surface.
What wood is the Prime Grade Collection made from?
American oak, graded hard for long, clean boards with barely a knot.
Is prime grade oak more durable than other grades?
No. Grade describes appearance only; durability comes from the wear layer and finish.
Does prime grade oak work with underfloor heating?
Yes. Every engineered floor in the collection is suitable for underfloor heating.

Try the collection
in your own light.

Order free samples to see them at home, or send us a photo of the room and we will suggest where to start.

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Read next: Oak flooring grades explained →
From a seed to a legacy — generations of craft with LIGNORA