I prefer to use a waterproofing brush when I apply deck stain or waterproofing sealant. A waterproofing brush is specifically designed for the tasks of sealing, staining and waterproofing. A General Purpose waterproofing brush will hold a generous amount of stain or sealant without shedding bristles when applying. Yes, there will be the occasional loose bristle, but I do not have to constantly remove loose bristles.
I use a three inch General Purpose waterproofing brush to apply deck stain or waterproofing sealantto a wooden deck. The black plastic handle is comfortable to grip and the no angle bristles spread stain or sealant evenly. The three inch brush width is the right size to apply stain or sealant to individual deck or fence boards. The boards on my back deck are 4 and three quarter inches wide (a five inch wide deck board). Note: wood boards are not the size as advertised, for example, a 2 x 4 is not a full two inches by four inches.
A three inch General Purpose waterproofing brush is also the right thickness to reach between deck boards to apply stain or sealant to the sides of the boards. Decks generally have a gap between boards to allow rainwater to drain. It does not make sense to me to just protect the top of the boards when rainwater reaches the sides too. It requires extra effort to apply between the boards, but the extra protection is worth the effort. Staining between the deck boards is easier and far less expensive than replacing the deck.
A General Purpose waterproofing brush is fairly easy to clean, depending on the deck stain or sealant that is used. I like to clean the brush with water at the end of the day or when the project is finished so that I can reuse the brush. The handle has a hole at the end so the brush can be stored on a peg board or hung up to dry after cleaning.
While a cheap, disposable brush may seem like a good deal when comparing prices in the store, a General Purpose waterproofing brush delivers quality results on-the-job. I do not like to spend my time removing shedding bristles when I apply a deck stain or waterproofing sealant. If I can see loose bristles sealed in the finished product, then it stands to reason that others will see them too.
A General Purpose waterproofing brush is a quality product for quality waterproofing projects.