Mainly caused by using material unsuitable for exterior use. Fungal attack can spread with contact to water and soil. The fungus spreads quicker in moist, shady and cool areas. Often when Fungal decay starts to occur, there is little you can do to prevent it from slowly decaying the entire structure.
Causes discolouration, peeling of the sealant and may cause planks to expand and contract that results lifting boards pushing against each other.
UV exposure burns off the top coating of the Deck boards and allows dust and water to accumulate on the surface. In time, wood can start splitting cracking and lifting it`s grain.
Extreme cases of heat, drought and moisture cause Expansion, contraction, cracking, splitting, warping, cupping and hairline cracks. Also in cases where the wrong material was chosen for the climatic application.
Left untreated from the start. A very popular technique to get the wood to have a silvergrey finish. This technique is only suitable for certain hardwood species with very dense and stable qualities. The pigmentation of the wood gets washed out and bleached by the UV exposure. Once this effect has been achieved it is advisable to start treatment to preserve the wood.