Step-by-Step Guide to Installing uPVC Casement Windows

Installing uPVC casement windows can enhance the aesthetics and functionality of your windows. Casement windows are pretty to look at. Moreover, they are made out of uPVC material that offers incredible durability and weather resistance with low overall maintenance requirements. This makes it a popular choice among new-age homeowners.

In this blog, we will go through the step-by-step process of installing uPVC casement windows.

Gather the Necessary Tools and Materials

Before starting the installation process, make sure you have all the required tools at your disposal:

• Tape measure
• Level
• Silicone gun with silicone to match the external frame finish
• Foam gun
• Fixing screws
• Screwdriver (cordless if possible)
• Hammer
• Chisel
• Hand saw or electric saw
• PPE equipment, such as safety glasses and gloves

Step-By-Step Guide For Installing uPVC Casement Windows

Step 1- Survey

Assess the window opening for structural issues or defects. Measure the width and height at multiple points to identify irregularities in the base structure. The smallest measurements are called “tight” sizes. Measure diagonally to record the squareness as well. These measurements will help ensure that the windows fit correctly and function properly.

Step 2- Fitting Tolerance

The tight sizes obtained help deduct fitting tolerances to allow for the expansion and contraction of the uPVC frame. A clearance of 5-10 mm around the frame is recommended, but this may vary depending on the window size and colour. Ensure that these tolerances are settled before finalising the uPVC casement window model.

Step 3- Frame Positioning

Place the uPVC window inside the prepared opening. Use a spirit level to ensure that the horizontal and vertical members are level and plumb. Temporary packers and wedges might not be able to hold the frame in position during this process. Thus, the uPVC casement window must be properly aligned to ensure functionality and longevity.

Step 4- Fixing Methods

People can choose various methods for fixing uPVC casement windows. The popular options include:

• Through Frame Fixing: Drill pilot holes of a minimum of 40 mm through the frame surrounding the wall. This helps in keeping the screw penetration in check. Once the hole has been made, insert the fixing screws through non-degradable packers to keep the position of the frame in place to prevent distortion. Avoid tightening the screws too much to prevent the window framework from bending or getting distorted.
• Fixing Lugs: Attach fixing lugs to the exterior of the frame and secure them to the surrounding structure. This method is often used when thorough-frame fixing is not suitable.
• Polyurethane Foam: This method is used when mechanical fixing is not possible. Under such circumstances, the foam suppliers’ guidelines should be followed. Foam should only be used where a minimum of two mechanical fixings per jam are provided for best results.

Step 5- Glazing

Before glazing, ensure that all the glass units comply with regular regulations and standards. Place setting blocks at appropriate points to support the glass and maintain frame clearance.

Insert the glass inside the frame with utmost care and caution, ensuring even spacing and alignment. Finally, secure the glass with glazing beads, tapping them into place with a non-marring mallet.

Step 6- Apply Insulation and Sealant

Expanding foam will provide acoustic and thermal insulation between the frame and the wall. Once the foam has cured, trim any excess material flush with the wall surface. Apply a continuous bead of silicone sealant around the exterior perimeter of the frame to create a weatherproof seal.

For a professional appearance, choose a high-quality sealant that matches the frame finish.

Step 7- Final Inspection and Cleaning

Once installed, inspect the entire body of the window to ensure that all the moving parts are operating properly. Check that the window opens, closes and locks smoothly. Clean the glass and frame surface to remove debris or fingerprints and ensure that all the protective films are removed to keep the area tidy post-window installation.

Conclusion

Following this step-by-step guide will ensure a successful installation of uPVC casement windows. Consult with the professionals at AIS Windows to ensure optimal results and enhance your home's comfort and security with top-quality uPVC casement windows.