Why choose rock?
From the great pyramids in Egypt to the mountain tops of Machu Pichu, to the great wall of China, there is a reason why ancient civilisations all chose rock. It simply works, and has survived the ultimate test of time, time and time again. If that doesn’t convince you we have examined the most common factors when choosing between rock and timber retaining walls – cost, durability and appearance.
At first glance a quote for a timber retaining wall may appear far cheaper than there rock counter part. However, this value is short lived due to the inherent problems of timber retaining walls. Timber retaining walls are renowned for their short lifespans, tendency to rot and termite issues. The cost to remove and replace a failed wall (especially if a house is now in the way) far outweighs doing it right the first time. With boulder walls, construction costs are once off as a properly constructed boulder retaining wall will last a lifetime.
Treated and hardwood sleepers have an average lifespan of ten years. This can be significantly less if drainage around the wall is insufficient. Timber walls are prone to failing, either as a result of poor design leading to tapping of water behind the wall or as a result of being located in areas with high levels of shade and natural water retention causing water rot. Another consideration with timber is white ants – typically CCA timber is treated with Copper Chromium arsenic, over a period of time this weathers down and leaves no white ant protection. These problems do not occur in boulder walls. A properly constructed boulder wall should last a life time – we can refer you to walls we created thirty years ago that still look as good as the day they were created.
Now this once is an easy choice timber retaining walls just don’t look as good as rock walls. The addition of a quality rock wall will add value to any property. Boulder retaining walls can be constructed using a variety of rock types and come in a variety of tones to best suit your property. Whether it’s the cool tones of sandstone or darker hues of blue metal we are sure to have an option to suit your taste and budget.