What Is An Expansion Joint For Gutters?

The gutter expansion joint is a very important point in the rainwater system and can go unnoticed, either due to lack of knowledge at the time of installation or due to low-skilled labor, who do not know how to solve this critical point in a cover.

Do you want to know what is the function of expansion joints in a gutter repair and why are they so important? Keep on reading All About Gutters Inc guide you to know everything.

What Is An Expansion Joint?

Expansion joints are pieces that are placed between the different sections of the gutter and that allow these to function correctly, allowing the natural movements of the gutters and thus avoiding the breakage or the appearance of cracks in the joints.

However, it is not necessary to have them provided for in all systems: it is recommended to place expansion joints on facades of more than 30 linear meters and always leaving a space between each joint.

How Should The Installation Of An Expansion Joint Be Carried Out?

To place the gaskets, the first thing that is taken into account is their shape. In general, there are two options:

You can find pieces that are mounted between two ducts, causing them to become independent sections. For it to work properly the end is closed with a lid and they are joined, also placing a downpipe on each side.

You can also find expansion pieces that are placed under the welded joint of two gutters. This material is made up of two metal pieces joined by a rubber zone that allows the elements of the construction to expand.

Types Of Expansion Joint Depending On The Material Used In The Gutters

Installing one type of expansion joint or another will depend entirely on the material used in mounting the gutters.

In aluminum or galvanized gutters, covers are used on the sides of the ducts to join and a sheet metal finish is placed that is fixed only to one of the areas. Thus, in the event of movements, stresses that may cause cracks and breaks in the system are avoided.

For zinc gutters, as it is a very delicate and complicated material, it is recommended to choose an expansion joint with a rubber band and weld it on both sides of the pipe. Thus, from the central section, it will act as a support, reducing the impact of any movement in the joint.

For other materials, such as PVC or copper, it is best to carefully analyze the particular case and place expansion joints that support the entire movement of the roof.