A Step-by-Step Guide On How to Caulk a Window

Over time, the windows may wear out or shift and pull to different positions within the home. These gaps let in cold air, increasing the cost of energy used and decreasing the room's comfort. Knowing how to seal a window from the inside and properly insulate it can significantly help during​ winters.

• Choose the right caulk: Silicone-based caulk is the best material for windows. It offers superior flexibility and water resistance compared to acrylic or latex caulks, making it ideal for areas exposed to moisture.
• Seal from the inside and outside: Sealing both inside and outside creates a double barrier, improving energy efficiency and protecting against leaks. While not always necessary, sealing both is ideal in harsh weather, whereas sealing one side may suffice in milder conditions.
• Inspect annually: Over time, caulking can deteriorate due to wear and weather exposure. Check your windows for signs of cracking, peeling, or gaps in the caulk, as these indicate it may need reapplication. Gently press along the caulk line to ensure it’s still flexible and appropriately adhered. If you notice any areas where air or water might seep through, it’s time to reseal.

Understanding how to caulk a window and implementing these steps will make your home warmer, more energy efficient and free from drafts.