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Which Side Of Blackout Fabric Should Face The Window?

Which Side Of Blackout Fabric Should Face The Window?

A blackout curtain is made of a fabric that does not allow light to pass through. This fabric is frequently used as a liner for bedroom curtains when light control is critical for sleep. It is sometimes combined with thermal blind material to reduce heat loss through windows. 

What are blackout curtains?

The blackout layer often comprises tightly woven cloth, and the best blackout curtains include a foam or rubber backing to block out light totally. When correctly placed, blackout curtains block 99 percent of light due to the dense back coating or lining.

Today, you can’t tell the difference between blackout and ordinary curtains, and they come in various colours. You should pay attention to know which side of blackout fabric faces the window. 

Face out 

The fabric used for blackout curtains isn’t actually black. The cloth is white on both sides. One half is finished, but the other isn’t. The finish is stitched on the exterior, so it will be closest to the window when the curtain is hung. All drapery liners are intended to be used on the finished curtain with the finish side out. 

While liners are rarely visible when the drape is correctly hung, they are occasionally visible, and the drapery designer wants the liner to appear nice in those situations. The fabric is also made to work with the face facing out. If your decorator fabric has a rubbery side, it should be facing inward and towards the back. The fabric used for blackout curtains isn’t actually black. The finish is stitched on the exterior, so it will be closest to the window when the curtain is hung.

How to Determine Which Side of Curtain Lining Fabric Is Right?

  • Feel the blackout or dim out lining’s surface one side will be smooth, while the other will be rough. The rough side is on the right, and it should be facing the road.
  • Locating the pinholes in cotton or mixed fibre is woven fabric’s selvedge. This is the right side, which will feel harsh. Pins inserted through the edge up from the underside to the topside, which is the right side, are used to hold the fabric taut during the manufacturing process. These holes may vanish with laundry, so note one side before going through the process.
  • Choose a liner with a flannel backing for further insulation. The right side of the flannel-backed cotton should be against the wrong side of the drapery fabric, and the fuzzy side should be against the wrong side.
  • On one side of the cloth, the diagonal lines of a twill weave will flow in one way, while on the other side, they will run in the opposite direction. Choose one side and utilise it as the right side to avoid misunderstanding with twill, which might seem the same on both sides because of the weave. Just remember to remain consistent. The only exception is if one side has longer surface threads than the other. The longer surface threads indicate the wrong side.
  • Consistency is key. Choose one side and use it as the right side for all of your curtains if the two sides are extremely similar in look.
  • If the cloth has a shiny surface, choose the shiny side for the right side. This might be the consequence of very fine fibers with a satin weave, or it could be the product of a chemical finish. The chemical finish may wear off with time, and the weave’s sheen may fade, but it looks great while it’s fresh


Drapery liners are stitched into the drapery fabric’s backside. To keep the lining hidden from view in the room, the liner is shorter than the bottom border of the drape. The sides of a curtain with a blackout lining should reach several inches beyond the glass of the window, preventing light from leaking around the borders.

Traverse Rods

Pairing the curtains with a box-style traverse rod and pleated drapes is the greatest option for minimising sunlight. To collect any escaping light through the top border of the curtains, a cornice box should be placed over the top of the window treatment. When the drape is closed, the traverse rod allows the sides of the drape to loop back to the wall and the inside edges of the drape to overlap, providing maximum light blocking.

Which side of blackout fabric faces out?

Some blackout liners are sewn directly into the curtain, while others have a distinct structure with one side that looks like vinyl and the other that looks like fabric. Although the blackout feature works independently of the lining’s direction, the fabric side faces the window to assist preserve the coated side.

The right side of the liner is exposed to the outside environment. Also, what is the best way to attach a blackout lining to curtains? Putting Blackout Linings in Place. Place the curtain face down on a level surface to begin.

When using conventional curtain hooks, first place the hook into lining tape, then curtain tape, and then choose the appropriate hook location for the curtain pole or track.

For either side, there are rational and practical arguments. One group believes that curtains should be hung facing out the window so that passers-by may view your wonderful floral design. While another believes that the pattern should be faced inside the room so that you can see it and passers-by can see the reverse side.

Wrapping it up 

You can receive huge range of benefits when you pay attention to find the which side of blackout fabric should face the window. Consider the above things it will guide you to pick the best one.

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