ᐅ Warped Decking Boards – Are They Usable?

AndreasPlü schrieb:
Would you do that, or is this standard?

Somewhere in the delivery terms or similar, there should also be information about warped floorboards. This is not always a valid reason for complaint but must be accepted up to a certain extent because wood is a natural product. Depending on the classification and supplier, this varies. They can be installed, as described, but it takes a bit longer. And with 2 out of 29 boards affected, that is still quite manageable.

@dertill has already described very well how to handle it effectively. The spacers make the process easier and more durable.
This is how our decking boards looked:

With the mentioned tools, they could be managed well.

In the end, the result was a terrace that brings joy every time you see it.

dertill schrieb:
Since I've just been through this with several decking boards:

Which boards did you end up installing? Thermally modified wood, larch, or something else? Are you satisfied with your choice?

boxandroof schrieb:
What type of decking boards have you installed? Thermo-treated wood, larch, or something else? Are you happy with your choice?

I initially leaned towards thermo-treated pine or thermo ash but ultimately chose classic larch for several reasons.

The terrace is about 34 m² (370 ft²) in size. The price of the wood was an important factor since all other options would have been at least twice as expensive. I installed 28/120 mm (1.1/4.7 inch) boards without any profiling, so they are smooth. At the moment, I’m very satisfied. How long that will last remains to be seen. I followed the main guidelines for structural wood protection, so I’m not too worried about long-term stability in general. As for splitting or checking, we’ll see. Working with larch is also easier than with hardwoods, and since this is my first own terrace, I didn’t want to make things unnecessarily difficult or struggle with particularly expensive wood.

Here is a picture of the terrace. The photo is from February, so it wasn’t finished yet. On the right, you can see the wood pile. The decking was extended about 6.5 m (21 ft) to the right with boards that are 2 m (6.6 ft) long instead of the 4 m (13 ft) ones shown here. (The pergola was built by the previous owner).

@AndreasPlü what type of wood do you have?

dertill schrieb:
I initially leaned towards thermally modified pine or thermally modified ash, but for several reasons decided on classic larch.

Thanks for the feedback and the information!
When fastening from above, it hardly shows due to the wood grain. We had planned to make it hidden, but now I’m not sure if the effort is worth it.

We are also strongly leaning towards larch or Douglas fir. Unfortunately, the samples of thermally modified pine and wood/plastic composite materials that I had were not convincing.

We also have Siberian larch, length 6 + 5 m = 11 m (19.7 + 16.4 ft = 36.1 ft). Some pieces were slightly warped. There are helpful tools available, for example from the manufacturer Wolfcraft, such as clamps and spacers. It worked smoothly for us.