Pergola / August 26, 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.
You can generally save more by using plans rather than kits. However when you use plans you still have to buy the materials and tools from the materials list that accompanies the plan. In this case the materials you will buy are not yet fitted so you will have to cut and shape them yourself. But if this is not an issue with you because you are fairly skilled and have the basic tools then using plans would be very cost-efficient. Kits on the other hand cost a lot more than plans. If you have below average skills you might want to spend on a pergola kit. The kits will already come with a detailed how to instruction list basic tools and cut or shaped materials that are supposed to fit perfectly when assembled correctly.
Plastic and Fibreglass Another variation of roofing for pergolas includes using plastic or fibreglass. The advantage of these options is that they are lightweight and inexpensive. They may also be easily cut to size and allows the light to filter in depending on the colour of the roof. They also protect the pergola from the harsher elements of the weather including the rain and snow. Also ultraviolet radiation may be reduced when using these two options. Although plastic may not be a green choice Fibreglass can be manufactured from recycled materials. Polycarbonate Polycarbonates are thermoplastic polymers which can be easily moulded and has a high impact resistance along with other advantages such as heat resistance ease of shaping flame retardancy and toughness.