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.
Our free calculator uses recent, trusted data to estimate costs for your Patina Concrete Staining project. For a basic 125 square feet project in zip code 47474, the benchmark cost to Stain Concrete Patina ranges between $3.05 - $3.88 per square foot* .To estimate costs for your project:1.Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased. 2.or a basic 125 square feet project in zip code 47474, the benchmark cost to Stain Concrete Patina ranges between $3.05 - $3.88 per square foot* . To estimate costs for your project: 1. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased. 2.