You could do it, but it would be a lot of work and you might not do a good job. Installing insulation is a big job. It's not something that most people can do in a weekend. If you're thinking about doing it yourself, I suggest hiring a professional to do it for you. That way, you can be sure the job will get done right and you won't have to worry about it.

Yes. It is a relatively easy process that can be done by most people with some basic DIY skills. The first step is to measure the area you want to insulate. Once you have the measurements, purchase the insulation and cut it to size. Next, use a staple gun to attach the insulation to the wall or ceiling. Finally, seal any gaps in the insulation with duct tape.