Dealing With Protrusions

Any part of a roof that needs an external pipe, duct or flue should ensure they have adequate flashing surrounding where they pass through the metal roofing sheets. If you need to cut any of the metal sheeting away, you should ensure you have created additional framing support in order to adequately support the sheets.

Depending on the angle and position you choose to cut, you will need to give additional attention to the back of the flashing. Ensure provisions are made for adequate drainage of corrugations and troughs. Some protrusions have their own specialty flashings kits such as velux windows, or temperature pipes. Pipes that run hot or cold usually use a kit known as dektite. If you are using one of these protrusions you may wish to check the manufacturer’s website for your kit requirements.