There is a 20% tariff on products from China and 25% on many goods from Canada and Mexico. What is sure is that they will increase the cost of DIY projects and home renovations, says Pelin Pekgun, at Wake Forest University School of Business. …“While prices will not rise immediately, higher material costs, potential shortages and supply delays could result in tighter renovation budgets in the coming months.” …One of the most significant products the tariffs will impact is lumber. More than 25% of cement and concrete are imported from Canada and Mexico, so the cost of pouring foundations and flatwork, such as driveways and walkways, will likely increase. …Many other building materials will likely get more expensive, including flooring, cabinets, countertops and lighting. Though not a direct consequence of tariffs, labor costs are also a growing concern in the construction industry, says roofer Michael Green.