French windows might soon be a thing of the past as the country prepares for a rainy day.

Bloomberg reports that French Premier Manuel Valls says he will ban windows from 10th through 15th centuries and require the installation of wind-resistant glass.

According to Bloomberg, this would require an additional $1,500 in costs to install wind-resistive glass for each window.

Valls will also require the use of more energy than currently used to install the windows.

Vimes says the ban will save about €1 billion ($1.6 billion) annually in energy costs, which will be used to reduce emissions from the building industry.

Bloomberg notes that the French government has pledged to pay $50 billion ($68 billion) in fines over the next two years for failing to install these wind-resistance windows.

In February, Valls said the government was going to set aside $50 million to help install wind and solar-powered windows. 

The move to install more wind-free windows comes as the European Union and the United States have been grappling with the issue of climate change, with both sides pushing for measures to reduce greenhouse gas emissions.

On Thursday, President Donald Trump signed an executive order to increase federal funds for solar and wind energy, including $100 million to the Environmental Protection Agency and $20 million to National Oceanic and Atmospheric Administration. 

Valls has previously said he will implement his plans to ban windows by 2021, but he has yet to offer an official date for the ban to take effect.