Pergola / August 28, 2018 / JulietteHughes
It gives colour to the wood and also conceals some of the natural defects and characteristics that may stand out obscuring the real beauty of the wood. Paint is also beneficial because they prevent moisture damage and rust. Acrylic paints are the best choice for painting pergolas as they provide the best protection. The durability of pergola depends on the materials chosen for its construction. As the roofs are permanently exposed to the elements of nature the paint chose may fade easily. Also materials such as fabric may fray or fade and plastic or fibreglass roofs may get warped or change colour.
Also any iron fittings may rust and cause red stains which may react with other pigments or stains. To prevent this stainless steel nails may be used and a constant vigil kept to encourage the Pergola to stay dry. A commercial mildew remover or other multi-purpose cleaners and help keep the roof spotless. Stains that are caused by the reaction of water deposits on the wood may also be removed by washing it with cleaners. Chalking is another form of discoloration which is caused by weathering of paint or disintegrating of pigment particles which appear as a powder.
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.