How To Replace Weatherstrip

Weatherstrip is tucked into the bottom guide rail as shown. Gilbert suggests being very gentle to avoid weatherstrip damage.

Any areas where weatherstrip isn't secure get a small dose of Weatherstrip Adhesive, which is allowed to tack off before the weatherstrip is pressed into place.

Installation should look this good when you're finished with the door.

Roof rail weatherstripping is next. Gilbert applies 3M's Weatherstrip Adhesive #8011 sparingly as shown before using an acid brush to spread it out. Ford didn't use adhesive in this application 40 years ago. However, for added security, Gilbert suggests minute amounts of adhesive.

The roof rail guide is tightened up firmly before weatherstrip goes in. Gilbert will apply a very thin film of Weatherstrip Adhesive with an acid brush and allow it to tack off before installation.

Next, we're going to lay down 3M's Rope Caulk #08578 (also called "dumb-dumb") at the quarter window to provide a tight seal between the weatherstrip and body. Rope Caulk stays flexible and will not leak.

Here, we're laying in the roof rail weatherstrip for our Mustang SportsRoof. Three threaded studs secure this weatherstrip at the quarter window, which means the quarter window must be removed. For that to happen, you've got to remove the interior quarter trim panel and rear seat.

Roof rail weatherstripping is secured via three Tinnerman's nuts. You're going to need a 3/8-inch socket to snug them up.

Gilbert applies a thin film of Weatherstrip Adhesive to the roof rail guide. An acid brush will be used to spread it.