Removing externally beaded windows, typically found in uPVC double-glazed units, involves carefully detaching the beading strips that hold the glass in place from the outside. Here's a step-by-step guide:
Tools You'll Need
- Putty knife or Lead Knife: These are specifically designed for prying without damaging the uPVC. Using the correct tool is critical.
- Hammer (Rubber Mallet): May be needed to gently tap the knife into position.
- Gloves: To protect your hands.
- Safety Glasses: Essential to protect your eyes from flying debris, especially glass.
- Soft Cloth or Cardboard: To protect the surrounding frame and the glass from scratches.
Step-by-Step Guide to Removing External Beading
-
Preparation is Key: Place a soft cloth or cardboard between your tool and the frame to prevent scratches. This is crucial for maintaining the window's appearance.
-
Identify the Beading: Examine the window to identify where the beading meets the frame. Usually, there will be a visible seam.
-
Start at a Corner: Begin at one of the corners, usually the bottom corner, of the beading. This is often the easiest point to start the removal process.
-
Insert the Knife: Gently insert the tip of the putty knife or lead knife into the seam between the beading and the frame.
-
Gentle Prying: Carefully and gradually pry the beading away from the frame. Avoid using excessive force, as this could damage the uPVC or crack the glass. If needed, gently tap the knife with a rubber mallet to encourage it to slide in.
-
Work Along the Beading: Once you've created a small gap, work along the length of the beading, gradually increasing the gap until you can remove the entire strip.
-
Remove Remaining Beadings: Repeat steps 4-6 for the remaining beadings. A typical window will have four beading strips. It's often easiest to remove the vertical beadings first, then the horizontal ones.
-
Support the Glass: As you remove the last beading strip, be prepared to support the glass pane. It will now be loose and could fall out.
-
Clean Up: Once all the beadings are removed, clean the frame and glass to remove any debris or sealant.
Important Considerations
- External vs. Internal Beading: It's crucial to determine whether the window is externally beaded or internally beaded. Externally beaded windows have the beading visible on the outside. Removing internally beaded windows from the outside is difficult and potentially damaging.
- Safety First: Always wear safety glasses and gloves to protect yourself.
- Professional Help: If you're uncomfortable with any part of this process, it's best to consult a professional glazier. Damage to the window or injury could result from improper removal.
- Replacement Beading: When refitting, ensure you obtain the correct replacement beading. This can often be sourced from the original window supplier or a specialist uPVC supplier.
