Why Not “Do It Yourself”?

I’d want to believe that any one person can produce unique pieces that are as good, if not better than the next.

With that, this is a step by step guideline of a “Do It Yourself” (DIY, henceforth) project on how to change windows to bigger ones from much smaller ones.

So, here goes;


  • Chalk
  • Chisel
  • Spirit Level
  • Hammer
  • Mortar; workable paste of cement, sand and water used to bind building blocks together
  • Building blocks i.e. blocks
  • Spade
  • Trowel



  • Foremost, clear the proposed working space. Identify the windows of interest and the position of the lintel or ring beam.
  • Then take to marking the proposed sizes with chalk on the windows.


  • Case of the Water Closet, cover the fragile ceramic sanitary fittings i.e. cistern, bowl or sink, with anything plastic to shield from debris.
  • Mark straight lines along a spirit level while leaving an allowance around the frame for mortar.
  • Now use a chisel to remove putty to free the panes from the frame of the existing window. Since safety is paramount, secure the panes away from the working space.


  • With the hammer, knock the chisel along the marked straight lines gently and picking up appropriate force to free the frame.


  • Later, remove the freed frame from position and likewise, secure it away from the working space.
  • Place into position, the new frame.


  • Hammer into pieces a block or two to fill the allowance left after fitting in the opening the new frame with mortar.


  • Once in position, fit panes into the frame.
  • Plaster thickening around the window is an optional effort to maximize on the building’s aesthetics.


  • Lastly, clear and clean the working space.

Alterations of any sort to a building can quite be taxing since such an undertaking might take hours on end to complete but never despair because that’s often how you add value to a property – through maintenance, and the end product is always rewarding.


And voila, that’s your DIY guideline on how to re-fit windows. I suppose fitting windows in a new building call for about the same “bureaucracy”.


  • Common glazing thickness options for windows are 4mm and 6mm.
  • Window frames are available in sliding, folding or hinged configurations.

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