Timber conservatories can last for up to 80 years, if not longer. The best way to make sure that your conservatory lasts for longer and stands the test of time is to choose one that is manufactured by the experts using the highest quality materials. Dempsey Dyer's wooden conservatories made using modified Accoya timber, for exceptional durability. You may have to replace your windows and doors of your conservatory in this time, but the conservatory structure itself will serve you and your family very well for many years to come.