Installing a window or door is an important step in making any home or building more comfortable, energy-efficient, and secure. At KDSBuilding, our NFRC-certified products are designed for easy installation, whether you are a professional builder or an experienced homeowner working with a contractor. By following the correct steps, you can ensure that your new windows and doors perform at their best for many years.

The process begins with preparing the rough opening, which means the space in the wall where the window or door will be placed. The opening should be checked carefully to make sure it is level, square, and clean. A properly prepared opening helps the product fit correctly and ensures smooth operation later. At this stage, flashing tape or a waterproof barrier can also be applied at the sill area to protect against water leaks.

Next, the window or door frame is set into the opening for a “dry fit.” This allows the installer to check that the size is correct and that there is enough space around the frame for shims and insulation. A small gap, usually about a quarter inch, is recommended to allow for adjustments. Once the fit is confirmed, a high-quality exterior sealant is applied around the frame or nailing fin to create a strong weather barrier.

After sealing, the frame is carefully positioned in the opening. Shims are used around the sides and top to adjust alignment, making sure the unit is perfectly level and plumb. When everything is straight, the frame is secured to the structure with screws or nails. For doors, it is especially important to secure the hinge side first, since this keeps the door stable and prevents sagging over time.

Once the frame is in place, the space between the frame and the wall is filled with low-expansion foam insulation. This step is very important because it prevents drafts and heat loss, while also stopping moisture from entering the home. Care must be taken not to overfill the gap, as too much foam could cause the frame to bend.

With the insulation complete, the sash or door panel is installed and adjusted to make sure it opens and closes smoothly. KDSBuilding products are designed with durable hinges, handles, and multipoint locking systems, which add security and improve daily performance. After the hardware is installed, the installer tests the window or door to confirm that it works properly.

The final step is finishing both the interior and exterior. Trim or casing is added around the frame, and caulking is applied to seal any edges. On the outside, siding or exterior trim is put back into place, giving the project a neat, professional look.

By following these steps, KDSBuilding windows and doors will be securely installed, weather-tight, and energy-efficient. Our NFRC-certified designs meet international standards, helping homeowners reduce energy costs while enjoying comfort and durability. With proper installation, your investment in KDSBuilding products will provide long-lasting value and peace of mind.