Heat-treated pine.
 
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Agneta C Lindström
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Type of construction: Deck

Year of construction: 2019

Material: Tropical wood (bangkirai)

Placement: South facing

Possible biological attacks: Algae formation 1 year after, but this obviously depends on how much greenery you have in your garden. There is a solid 20m cypress right next to the deck which affects quite a bit. It works fine to remove with any algae wash that is sprayed out.

Possible mechanical issues:

Strong screws needed! This material is not for the weak! Stainless A4 with solid dimensions. The wood moves significantly and easily separates the wheat from the chaff. Hidden fastening is not recommended! I have had a dispute with Beijer Bygg about this.

Maintenance:

Each spring spray cleaner on the deck with, for example, a pressure washer, wait 30 mins. Then thoroughly clean with a terrace washer. If needed, repeat 1-2 more times.

Provide any maintenance tips considering the material.

High pressure works fantastically well! It is extremely hard and doesn't budge an inch. At the same time, it's insanely difficult to scrub with a rotary brush/soap for the exact same reason. The big tip is to invest in a good power washer with an attachment for application and finish with high pressure before the season. Not much else is needed!

"Satisfaction": Describe how you have experienced/are experiencing the choice of material for the current construction. Are you satisfied/dissatisfied with the material choice/treatment? Indicate on a scale of 1 to 5, where

5 - Bangkirai is expensive! But it is incredibly elegant, stable, and feels great underfoot.
 
  • Wooden deck made of Bangkirai tropical hardwood, showing varying shades due to lighting and perspective, adjacent to a white brick wall.
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Marlen Eskilsson Marlen Eskilsson said:
Today, there are many products for decking for patios and outdoor spaces that are new, and therefore we do not have sufficient experience with them. What we know can be read here - Test: Best Wood Species for Decking and Terraces

Wood expert Jöran Jermer would also like to hear from consumers about their experiences.

Share your experiences here in the thread, so Jöran can compile everyone’s experiences into a report that we all can benefit from. Specify this:

Type of construction: Deck, fence, plank, etc.?

Year built:

Material: Pressure-treated NTR A, Pressure-treated NTR AB, Accoya, Kebony, Heat-treated, Larch, Pine core, Organowood (impregnated), Organowood (surface-treated), Sioo x, Tropical wood (bangkirai, cumaru, etc.), other?

Placement: Direction? Shade/sun?

Possible biological attacks: rot, discoloring fungi (mold) and approximately how long after the construction year the attacks were observed

Possible mechanical problems: unusual cracking, dimensional changes, corrosion, any other issues and approximately how long after the construction year they were observed

Maintenance: Describe if the construction has been maintained in any way (washing (with what?), wood oil (which one?), other (what?) and at what approximate interval. What effect has the maintenance had (the wood has retained its original color, maintained a nice and pleasant surface, other, or has been largely without effect (=wasted time and money).

Provide any maintenance tips considering the material.

"Satisfaction": Describe how you have experienced/are experiencing the choice of material for the current construction. Are you satisfied/dissatisfied with the material choice/treatment? Specify on a scale of 1 to 5, where

1= very dissatisfied, never again that material

2= dissatisfied

3= neither/nor/Ok

4= Satisfied

5= very satisfied, will use again and recommend
After hobby-building 14 decks, I think Siberian larch gets a 4.
 
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Marlen Eskilsson
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Have brown pressure-treated decking, likely the lowest quality. The installer missed "right side up" in several places, which causes blackening. Installed about 15 years ago.

Used Rusta's wood impregnation back then, about 350 SEK / 3 liters with silicon content (most likely the same content as the "more expensive" ones).
I can state that I don't need to scrub as much now—for algae and green slime—as the previous deck that was oiled every year. RISE has also confirmed this with silicon!

Turns silver-gray over time—whether it's nice is a matter of taste!

Spoke to Hagmans Kemi. They are trying to develop a hydrophobic product "that sticks"—"maybe with color!"
Going to wash it thoroughly again and apply new silicon... I'm soon 80... and I don't want to scrub unnecessarily!
 
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