Hello, in our new house (solid construction) we have a straight concrete staircase.
The treads are made of 4cm (1.6 inches) thick stained oak wood. The risers are made of birch.
The steps were installed in mid-March. The treads are developing more and more cracks. I first noticed this on an upper step, where there is a bulge and also a crack. Since today, the bottom step also has a crack.
There is clearance on both sides to allow the wood to expand.
Do you have any idea what might be causing this?
The treads are made of 4cm (1.6 inches) thick stained oak wood. The risers are made of birch.
The steps were installed in mid-March. The treads are developing more and more cracks. I first noticed this on an upper step, where there is a bulge and also a crack. Since today, the bottom step also has a crack.
There is clearance on both sides to allow the wood to expand.
Do you have any idea what might be causing this?
M
Myrna_Loy12 Apr 2022 17:02This is too dry for wood. At around 55% relative humidity (rH) wood is stable; 35% rH is a level where visible drying processes occur, especially if the wood was significantly wetter during installation in the house.
C
Coletrickle_780812 Apr 2022 17:11So a 4cm (1.6 inches) thick oak stair tread would split after just three weeks?
C
Coletrickle_780814 Apr 2022 12:44Since yesterday, we have had a relative humidity of 42%, and today it is at 49%.
Perhaps the low value was also due to the fact that we only moved in recently, I’m not sure.
The stair builder was here, and the 3 steps will be replaced. He has the following suspicion: since all the cracks are always at the back right or left, and the steps are additionally screwed in there, he assumes it is most likely the screw.
Perhaps the low value was also due to the fact that we only moved in recently, I’m not sure.
The stair builder was here, and the 3 steps will be replaced. He has the following suspicion: since all the cracks are always at the back right or left, and the steps are additionally screwed in there, he assumes it is most likely the screw.
Similar topics