The best style of chimney cap for a brick chimney is one that fits tightly around the brick top of the chimney. The cap should have a screen to fully enclose it to keep animals out. The best materials include stainless steel, copper, or aluminum that fit tightly or are custom fabricated for a perfect fit on your chimney.

Metal roofs do not inherently leak more than shingle roofs; when properly installed, they are generally less likely to leak. Asphalt shingle roofs are more susceptible to leaks due to factors like wind uplift, damage from extreme weather, moss growth, and ice dams. Over time, asphalt shingles also lose their protective grit, which reduces their waterproofing capabilities. In contrast, metal is a more resilient material that stands up better to heavy precipitation and high winds. However, metal roofs can develop leaks if they are poorly installed, have improperly sealed fasteners, or experience issues from thermal expansion. For this reason, professional installation and regular maintenance are crucial to ensure a metal roof's longevity and superior protection against leaks.

The four types of roof sheathing are plywood, oriented strand board (OSB), planks, and tone-and-groove boards. The overwhelming majority of homes use the first two (especially OSB) and the other two are not often seen outside of special use cases. Methods of sheathing include solid sheathing, open sheathing where there are gaps, and plank sheathing. Most roofs are solid sheathing.

A chimney liner is typically easier to install by pushing it down through the chimney with the help of a rope. Depending on your fireplace and the type of liner, installing it by pushing it up through the chimney could work, but operating from the top down is usually the best option.