STEP-BY-STEP ASSEMBLY OF AN INSULATING CURTAIN

In this example, we assemble a curtain for a window opening that is 50 cm wide and 100 cm tall. 
1) Prepare the materials needed for the curtain. These are:

  • A 52 x 102 cm front panel (in this case made of thick white cotton canvas).
  • A 48 x 100 cm sheet of transparent polyethylene with a thickness of 0,1 mm.
  • An upper batten made of pine with a cross section of 1 x 3 cm and a length of 48 cm.
  • Three lower battens made of pine with a cross section of 1 x 2 cm and a length of 48 cm.
  • A 52 x 102 cm back panel (in this case made of yellow polar fleece).
  • Thumb tacks to fasten the front panel and plastic sheet to the battens. We use thumb tacks for aesthetic reasons since the front panel is visible from the room.
  • A stapler to fasten the back panel to the battens.



2) Trace the position of the battens on the plastic sheet. 
Make sure that
  • The top edge of the upper batten is aligned with the top edge of the plastic sheet;
  • The bottom edge of the lower batten is aligned with the bottom edge of the plastic sheet; and 
  • The remaining battens are evenly distributed over the height of the plastic sheet.



3) Slip the battens under the plastic sheet and use the marks traced on the plastic sheet to align them properly.
Since the length of the battens is equal to the width of the plastic sheet, the ends of the battens should also align with the sides of the plastic sheet.


4) Lay the front panel over the plastic sheet.
  • The front panel is slightly longer and wider than the plastic sheet, so when in place:

     A) The top of the front panel should be aligned with the top batten;

     B) The bottom of the front panel should extend by ~2 cm below the lower batten and base of the plastic sheet; and

     C) Each side of the front panel should extend by ~1 cm past the ends of the battens and sides of the plastic sheet.






5) Use tacks to fasten the front panel and the plastic sheet to the battens. 

  • Place a tack within 1 cm of the ends of each batten.
  • Use enough thumb tacks between both ends of the battens to properly fix the fabric and plastic to the battens
  • On the upper batten, the spacing between the thumb tacks should be between 10 to 20 cm. 
  • On the lower battens, the spacing between the thumb tacks can be increased to double the spacing used on the upper batten.



6) Flip the curtain over.



7) Place the back panel over the partially assembled curtain so that it rests directly on the battens. 
The back panel has the same dimension as the front panel, so when in place: 
  • A) The top of the back panel should be aligned with the top batten; 
  • B) The bottom of the back panel should extend by ~2 cm below the last batten and base of the plastic sheet; 
  • C) Each side of the back panel should extend by ~1 cm beyond the ends of the battens and sides of the plastic sheet.




8) Use staples to fasten the back panel to the battens.
  • Place a staple within 1 cm of the ends of each batten. This will ensure that the material maintains its full width and touches the sides of the window opening.
  • Use enough staples between both ends of the battens to properly fix the fabric to the battens.




9) You are done!