Sourabh Jain on Instagram: "Building a home? Don’t miss this small detail 🚨 ➤ Common mistake ▫️ Water flows into the staircase area ▫️ Slippery floors = risk of falls ➤ Smart construction fix ✅ ① Create a small level difference (step) at the terrace entry ② Add another step inside, aligned with the door shutter ③ When the door closes: ▫️ Water stays outside ▫️ Staircase remains dry & safe Save this for site execution 🛠 & share it with someone building their home. (terrace waterproofing, stairc