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personally I would not recommend using colourbound sheeting for a retaining wall as it is way to flexible, it may be fine if you have stable and solid ground but I would never give a guarantee if a client asked me to build a wall out of it. A proper wall built out of H5 grade treated pine sleepers should last a minimum of 20 years with 50 to 70 years not being out of question. You will find that most walls that do not last, use a cheap lower grade timber that is not meant for in ground applications.
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There is a few basic rules for the timber to last for example, anywhere you cut the timber and disturb the outer preservative layer you will need to re-coat with the appropriate preservative to retain the longevity.Personally I would always use a masonry wall first if the budget allows, but a well built sleeper wall will be fine.
What it will cost all comes down to how long and high the wall is. you are going to need a post at 1.2 meters intervals and the length of the sleepers are 2.4 meters long by 200mm high, so you could work out how much timber you would need from that. I'm not sure how much timber costs is in your area but from my experience I would allow about $25 a post and around $13 for a 2.4mtrx200mmx50mm sleeper plus you are going to need concrete, screws and most importantly drainage materials for behind the wall such as Geo fabric, an agg pipe and some form of gravel such as blue metal or whatever is cheapest in your local area. You may also need council approval depending on how high the wall is, so i would call out a few local landscapers for a quote and advise to run you through what needs to be done to complete the job. If you are handy on the tools you could also build it yourself.
regards,
ClarsHi alfrescodining,
The cheapest option is most likely a treated pine sleeper wall, if built properly, it will last a good few years.
You could also use just plane common bricks or blocks and bag them afterwards but it will need more work with the footings compared with the sleeper wall. another option is to go down to your local paving and brick store and check out all the different retaining wall block systems.Hope this helps
ClarsHi alfrescodining,
The cheapest option is most likely a treated pine sleeper wall, if built properly, it will last a good few years.
You could also use just plane common bricks or blocks and bag them afterwards but it will need more work with the footings compared with the sleeper wall. another option is to go down to your local paving and brick store and check out all the different retaining wall block systems.Hope this helps
Clars
