Here is a comment from a flooring forum that should warn you against thin hardwood floors.
Thin hardwood to cover gap 2 inches.
All of our thin wood and project ready hardwoods are 24 inches long.
Instatrim 3 4 inch covers 3 8 gap flexible self adhesive caulk and trim strips for floors ceilings countertops and more gray 10ft long 1 pack 4 1 out of 5 stars 3 155 14 95 14.
Start by measuring width.
They are kiln dried surfaced sanded on 2 sides.
In smaller rooms such as the typical bedroom you could leave as little as a 3 8 gap.
One between the kitchen and the living room first image and another between the kitchen and the outside door second image.
Typically the gap is about a 1 2 inch.
How much of an expansion gap you will need will largely depend on the size of the room.
This type of gap filler is made from solid 3 4 inch hardwood just like the cabinet face frame.
Whitewood can cost around 6 dollars for plank that is 1 inch 25 mm by 4 inches 10 cm by 8 feet 2 4 m.
You can stain the wrap any color you like.
On the other hand if the rooms are large like by a couple thousand square feet a 3 4 gap would most likely be recommended.
At their widest the gaps are an inch wide and about a half inch deep at the deepest.
So if you want to wrap a beam that is 3 inches 7 6 cm wide on the sides and 4 inches 10 cm by 8 feet 2 4 m long it will cost about 36.
I have two half inch gaps in the flooring in my kitchen.
1 2 inch 12 7 mm 5 8 inch 15 88 mm however you can find engineered with the top veneer of 3 4 inch 19 mm and even as thick as 33 32 26 16 mm which is just over an inch thick in rare instances.
Seam binders are easily secured to wood and concrete floors with.
The width of the gap is determined by the length of the run and the type of wood.
Measure and mark 1 2 inch out from each wall plus the width of the first board and use a chalk box to snap starter lines.
Finding a new hardwood flooring option that matches the width thickness and species of an original hardwood flooring can be quite a puzzle.
Solid wood needs a bigger gap than engineered wood because it expands and contracts more.
I speak from experience on this.
The larger the room the more space will be.
This is all solid hardwood sheets not plywood and is never glued.
The 2 1 2 inch x 72 inch unfinished hardwood seam binder easily covers a seam or gap between two flooring surfaces of equal height.
Our thin wood sizes are not nominal for example if you order a 6 wide board you will get a board exactly 6 wide or wider.
Typical cabinet fillers range from about 2 inches in width to over 4 inches.