The study also found that girls and young women were more likely than boys and young men to have coenzyme Q10 deficiencies. Boys and young men were more likely to have vitamin D deficiency. Patients with chronic migraines were more likely to have coenzyme Q10 and riboflavin deficiencies than patients with episodic migraines, the study found.
ThisOldHouse.com estimates it took two people five hours and six bags ($150-$180) of material to resurface a 9'x27' driveway and a 3'x18' walkway (about 300 square feet). Renting a pressure washer to clean the existing concrete before resurfacing can add $40-$75 to the total DIY costs.
Over time, a concrete patio is likely to crack. So when calculating the cost of your concrete patio, consider that you may have to repair or resurface it in the future. Resurfacing costs between $35 and $50 per square metre, on top of the cost of the new concrete.