Pergola / August 27, 2018 / JulietteHughes
So while buying wooden pergolas ask their manufacturers if they are partially notched or fully notched. Buyers should be aware that notching creates interlocking joints and this fortifies the structure. Also notching insures that all your timbers stay straight and true over the decades because they cannot move. Most manufacturers skimp on notching partially or completely to reduce their construction costs and will tell you that hardware will take care of the issue. It does not. If just one of your Pergolas timbers has hidden stresses in it (quite common) as it weathers over the years it will turn twist or sag.
To paint a pergola for lasting protection it is important to follow the traditional procedures such as preparing the surface which include removing old paint using sandpaper to permit absorption and applying preservative towards the end of the painting. Preparation of the surface is very important before painting as it decides how much time the effect of painting will last. Any remnants of oil or dirt on the surface of the wood should be removed thoroughly. Using sand paper with 50-60 grit create an appropriate surface for good absorption of paint. If the wood is more than two weeks old or if it had been lying outside in rain sanding brushing and cleaning becomes essential.
Depending on the type of fabric used these pergolas may avoid the transmission of heat which could cause fading or damages to the roof. A tough and durable fabric that may usually be used in the making of the sails of a boat can also be used to filter ultraviolet rays and other harmful natural elements such as sunlight and heavy rain so that people can enjoy their investment for a long time. Comparative Study of Roofing Materials for a Pergola Permanent structures like metal roofs are difficult to change but they can be repainted. Fibreglass and clean plastic materials may change colour after a period but they can be discarded and new ones can be installed easily.