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How-To Replace a Sill Cap

The sill cap is along the top edge of the sill. Depending on the type of this, this could be a composite material, wood material or plastic. Some sill caps can be removed and replaced due to normal wear.

In this video, Therma-Tru provides a comprehensive, step-by-step, tutorial explaining how to replace an adjustable sill cap in a door unit. Replacing an adjustable sill cap requires using tools that are not provided by Therma-Tru. Feel free to contact Therma-Tru with any questions or concerns about maintaining a door unit.

Please click here to go to Therma-Tru’s replacement parts page.

Updated on July 19, 2019

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