Caulk guns are devices that help people use caulk, a type of sealant, effectively. Caulk is a substance used to seal and adhere, such as closing a gap or crack between a window frame and jamb, or a sink and a vanity. Most any space can be sealed using caulk and a caulk gun.

Is a caulking gun necessary?

The quick answer to this question is yes, you can apply caulk without a gun. ... A caulking gun gun applies steady pressure on the tube so you can get a smoother and more even finish. You can also apply pressure with your hands, but using a caulking gun decreases the risks of making a mess.

Do you need a caulk gun for construction adhesive?

Why a Caulk Gun Is an Essential Tool for Builders

Silicone caulking and other types of caulks and adhesives prevent water infiltration which is absolutely essential in construction. ... A good caulking gun allows you to apply the products that will seal out water properly.