Mandatory if the window is low to the ground. There are special building codes that builders should be aware of. I recommend that you consult with experts, for example, you can contact Pom Waterproofing https://www.pomwaterproofing.ca/window-well/. They did waterproofing for me and I was satisfied. Punctual guys, responsible, finish the work on time, give a guarantee for the work performed. Use high-quality modern materials. There were no problems with them.
Hi. Do you guys like trading?? To get the maximum benefit from forex trading, you need to study the dynamics and forecast of the currencies. So you can benefit. I can advise you of the best forex brokers for beginners