The whole point of you fixing a gutter and downspout is to see to it that you are effectively collecting rainwater and transferring it either to a collection point or a drainage area. The most common gutters that you will find in a residential home would be in the size of six and five inches, and that comes in two shapes. Depending on where you live and the weather conditions, you might have to install a very wide gutter if it rains heavily. This is so that collection of rainwater is effective. Having an extra downspout is also a very good idea as it would work well to see to it that the rainwater is effectively collected.
Determining the size of the gutter as well as downspouts you need is important so that you can be able to fit the right size. If you fix a gutter that is not the right size, you will not be able to effectively collect rainwater. You need to correctly measure the slope of the roof as well as the facets of your roof. From your calculations, you must be able to come up with the square footage to get the gutter that will fit perfectly and therefore effectively capture rainwater.
A factor that you must look at when measuring the gutter size that you need is the roof-pitch factor which in simple terms is how steep your roofs pitch is. If it is very steep, then the amount of rain collected is more in comparison. You must also be aware of the amount of rain that falls in your area and work with the maximum levels. You want to install a gutter and downspout that will be able to collect all the rain that falls irrespective of the amount. If the area you live in experiences a lot of rain, then you will need to install a wide gutter to effectively capture it.
When it comes to sizing the actual gutter that you will use, you have to look into two factors. You must be able to calculate the correct size by looking at the roof pitch factor, the intensity of rainfall and then multiply the two to arrive at what we call the adjusted square footage. If you are not able to effectively come up with the measurements, you can look into getting estimates and then working with general sizes.
Gutters and downspouts are made from different kinds of metal and its important that you choose one that will not put a strain on your roofing structure. You have an option of choosing between aluminum, zinc, copper or vinyl among others. Understanding how different materials affect the weight of your gutter will ensure that you make the correct choice when choosing one. Gutters and downspouts made out of steel are a bit expensive and also very heavy while aluminum is easy to get and widely used because they are very light.