Choosing Trim for the Roof of Your Steel Building

Steel buildings should be treated like any other type of structure, especially when it is time to add some visual interest. You can achieve this by adding trim, and this is a good way to protect the roof as well. Trim can be used to channel rainwater away from the building and it also seals the joints. Since there are different types available, keep reading to decide which is best for your needs.  

  1. Gable trim – this is used where the endwall panels and the roof panel meet. It works well at the end of a gable, which is where the sloping edges of a roof meet to create a ridge. This keeps moisture from seeping into the spaces. He joints between the endwalls and the roof panels should also be shielded from moisture with gable trim flashing.
  2. Wall-to-roof trim – this is mostly used in residential steel buildings where a new structure is added to the existing one. In these cases, the new building has a lower roof, as would be the case with a garage. The trim not only provides a finished look, it also keeps the joints sealed to prevent water from getting in.
  3. Gutter or eave trim – either of these options is installed at the edge of the roof, and help to keep water away from the windows and the foundation. In addition to this function, eave or gutter trim gives the roof a neat finish. The eave trim helps to keep the water off the fascia but the gutters will channel the water to downspouts.
  4. Ridge rolls or ridge caps – these is ideal for ribbed roofing styles, and is used wherever two angles meet. Both names actually refer to the same type of roof trim. Since it is positioned at the top of two sloping surfaces it is effective at keeping water out while adding style to the roof.
  5. Valley flashing – a valley is created whenever there is a variation in roof pitch, or two areas of a roof meet at the bottom of the slopes. As expected, it is easy for water to settle in this area, so valley flashing will seal this space and move the water away.

Steel buildings and roofs can last longer than most traditional structures, and the right roofing trim can contribute to their long lifespan. You can also choose trim that matches the color of the roof and building.


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