How to choose the right lining?

How to choose the right lining.

Words by
James Dunlop Textiles
Photography James Dunlop Textiles

“Working all year round, lined Drapery is an important tool in creating a thermal insulation barrier. ”


Windows play a major role in controlling the temperature within a home. During winter it is easy to lose heat, and in summer it is easy to overheat a home if windows are not appropriately covered. Professionally fitted, lined Drapery can reduce window heat loss by 40-60% when closed*. Working all year round, lined Drapery is an important tool in creating a thermal insulation barrier.

There are many advantages to Drapery lining:

  • Creation of a thermal insulation layer.
  • Protects soft furnishings from sun damage.
  • Resistance to dust and mildew.
  • Creates a dark room environment (dim or black out).
  • Prolongs the appearance and life of your drapes as lining helps protect the fabric from harmful UV rays.
  • Improves drapability.
  • Stronger acoustic properties with more layers.

Note: In a hot climate, lining helps to reduce heat transfer into the room.

Pinch Pleat Blockout Curtains

Types of Drapery Lining.

There are several different types of lining which can be chosen based on the requirements of each Drapery installation.



One layer (1 Pass) of coated acrylic suede compound is known as thermal lining. It offers the advantages of insulation and energy savings, helping to keep rooms warm in the winter and cool in the summer. It is important to understand that a certain amount of light will pass into the room with this construction. As with all quality linings, thermal lining not only protects soft furnishings from fading, they are also treated to resist mildew and enables good drapability.

The manufacturing process of a thermal lining involves a thermal coating being applied directly to the reverse side of the fabric to reduce the amount of harmful ultraviolet light passing through the fabric, whilst increasing the insulation.



Three layers (3 Pass) of coated acrylic suede compound is known as ‘blockout’ (or blackout) thermal lining. This process offers the same benefits of thermal lining but also totally eliminates light penetration. Blockout lining naturally minimises the risk of natural flaws in the fabric from showing through. It also adds body to the fabric and provides a good stable base for Roman Blinds.

TIP: when drawing your curtains during the day, a blockout lining will ensure the colour of your main drape isn’t saturated/washed out by sunlight.


Dimout/Triple Weave

Unlike coated linings, a dimout lining is a woven construction which allows a small amount of light to pass through – hence the name ‘dimout’ as opposed to ‘blockout’. It is a popular lining in both commercial and residential applications due to its affordability, washability and noise reduction properties. It has a soft, thick handle which adds fullness to a light weight fabric such as silk and taffeta.

TIP: Darker dimouts achieve a higher degree of light reduction than lighter colours.



Interlining adds body and fullness to lightweight fabrics such as silk and taffeta. Its composition is typically either a blend of polyester/viscose/cotton or 100% napped cotton. Interlining also improves insulation and acoustic properties of a room through noise reduction and provides extra protection from harmful UV rays. It works as additional padding for headboards and Pelmets when used between the face fabric and lining.


Advancements in technology have led to coated lining layers being made of a silicone compound, which creates a soft agile handle and has the added benefit of not eliciting or holding any loose dust as experienced with acrylic suede lining. Silicone backed lining is a coated lining product with three layers of silicone on one side, providing protection from elements such as sun and moisture. This product is also washable, making it easier to maintain, however it cannot be dry-cleaned.


Note for coated linings:

For both thermal coated and blackout coated linings, the coated side of the fabric must face the glass to maximise UV and mildew resistant properties.

Thermal lining and blockout lining is NOT machine washable, it may be gently hand washed if necessary, drip dried with coated surfaces facing out. Professional cleaning by a specialist is the recommended option.



Fire retardant.

Linings with fire retardant attributes have either had a treatment applied to the yarn/fabric retrospectively or the fibre/yarns used to produce the fabric have been engineered to possess inherent FR characteristics. FR linings meet all government requirements/standards and are suitable for residential and commercial use.


Environmentally better, Oeko-Tex.

Oeko-Tex Standard 100 is an independent international certification. Linings that carry this certification mean that the fabric is free from harmful substances and safe for people and the environment. For more information visit OEKO-TEX.

dollar curtains + blinds has specialised in crafting custom made window coverings in Melbourne for over 50 years. Contact us today, visit a store or book a free design, measure and quote. Our Interior Consultants can help you to make the perfect choice.

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