My floor has been down for 1 1/2 years and I have noticed raised creases in some of the boards. It sort of looks like the wood grain is raising and it feels like the raise part has a crack in it. These boards are in my loft area and they are nailed down, not glued. I first noticed a few boards last spring and now I am seeing more boards with this identical defect. I see these defects only when light hits the board at a certain angle. When I see this, I touch the board and it has a raised crease. What wood cause this? I have also discovered 2 boards downstairs that are glued down which look and feel the same. Has anyone ever seen this before?

Are the glued boards hard to change out? Will the boards around them be damaged?

A raised crease, like it is delaminating the thin top ply of engineered??

Yes, What would cause this? Bad Manufacturing? This is the new BR111 BC Triangula that they started manufacturing with the thicker wear level.

I am going to call BR111 because I have a 30 yr. warranty on the floor, but I wanted to have an experts opinion before I call them.

Have you read exactly what the 30 year, marketing warranty actually covers??? The finish. Most have a lifetime on the construction.

Delamination of engineered is a manufacturing defect.

Call BR-111 and file a claim against the warranty, is my best advice for you.

Sounds like "checking"--splits that do not go through the full thickness of the top veneer. It's commonly a result of poor moisture control. Do you wet-mop the floor? Do you keep your living space between 30-50% relative humidity? You can make the claim, but be ready for pushback along those lines.

the 30% to 50% rule is based on the drying %. 6% to 9%.
The relative humidity of 30% results in Wood Moisture Content of 6% and 50% RH results in 9% wood moisture content.

Impossible to maintain 30% to 50% Rh year round.

Besides;;; The Standards for Engineered wood flooring, should importers wish to sell product in this country, must meet the ANSI/HPVA 2002 standard. That standard states that the flooring will not be affected by changes in RH... It also tells us that Engineered wood can flood and not delaminate. Delamination is a defect if that is what this consumer is experiencing no matter the Rh.