By the early 1990s, Rwanda, a small country with an overwhelmingly agricultural economy, had one of the highest population densities in Africa. About 85 percent of its population is Hutu; the rest is Tutsi, along with a small number of Twa, a Pygmy group who were the original inhabitants of Rwanda.
1 Power sanding, stain and seal â This is a very aggressive procedure normally used on decks that have not been well kept or are changing color. The average cost is $2 to $4 per square foot.  Light sanding, stain and seal â This is a general annual treatment for a deck.
To restain a deck, inspect the deck and repair it if necessary, clean the deck, then use a sprayer to apply the stain. This method takes approximately one weekend. You need a sprayer with a 2-inch brush and at least 5 gallons of stain to cover 500 square feet. Full Answer >.