The best way to replace rotted exterior trim is by using a piece of new trim that is the same as the old trim. If you are unable to find a piece of new trim that is the same as the old trim, then you can use a piece of new trim that is similar to the old trim.If you are using a piece of new trim that is different than the old trim, then you will need to cut or measure the new trim so that it is the same size as the old trim. You will also need to drill holes in the new trim so that it can be attached to the wall or house.

All of the exterior trims rotted. How do you replace rotted exterior trim? Well, it depends on what type of exterior trim you're talking about. If it's a piece of wood trim, you can usually just replace the piece of trim that's rotted. If it's a metal trim, you might need to replace the entire metal strip. And if it's a plastic trim, you might need to replace the entire plastic strip. If you need to replace the entire trim piece (or strip), then you'll probably need to remove the old trim first.