Which fabric holds up best in strong sun?

Polyester and polyester blends, generally, because synthetic fibres hold colour and dimension under ultraviolet better than natural ones. Wool resists fading well too but is a heavy specification for a hot room. Silk is the weakest against light. Linen and cotton drape beautifully and both weaken with sustained exposure, which is what lining is for.

Is lining really necessary?

Yes, and it is the most underrated line in the quotation. The lining takes the ultraviolet hit instead of the face fabric, evens out how the windows read from outside, and adds a thermal layer that matters more than the curtain itself when the glass is hot. Spending heavily on a face fabric and then economising on lining is the fastest route to disappointment within a year.

How much difference does the window orientation make?

A great deal. A south or west facing window takes direct sun for hours and needs a different specification from a shaded or north facing one in the same house. The right conversation starts with which way the window faces and how many hours of direct sun it gets, not with a colour.

Are blackout curtains enough on their own?

They handle darkness but not daytime. Rooms with strong sun work better with two layers, a sheer or roller blind managing glare and privacy during the day, and a heavier or blackout curtain for the evening and for insulation. Two layers give a level of control one cannot.

Choosing curtain fabric for Gulf sun

Fibre decides most of what happens to a curtain here, and it decides it before anyone opens a colour book.

A fabric that looks superb under showroom lighting can be the wrong choice for your window, and the reason is usually orientation rather than quality. A west facing window in Abu Dhabi takes direct sun through the hottest part of the day. That is a design condition, not a detail.

What sunlight does to fabric

Ultraviolet works on two levels. It fades the dye, which changes the colour, and it breaks down the fibre itself, which weakens the cloth. The second is the more serious one, because nothing shows until the fabric tears at an ordinary touch.

Heat and humidity add their own effects. Moisture makes natural fibres expand and contract, which is why linen hems tend to drop a little over time.

The fibres, and what each one does

Linen drapes beautifully and breathes, and its irregularity is part of the appeal. It weakens under sustained ultraviolet and it moves with humidity.

Cotton is easier to work with and usually less expensive. It shares linen’s vulnerability to long exposure, and lining improves its life considerably.

Silk handles light more attractively than anything else and tolerates it least. Unlined silk at a west facing window is a short-term decision regardless of what it cost.

Wool resists fading and hangs with a weight that gives a curtain real presence, though it is a warm specification for a hot room.

Polyester and blends hold colour and dimension under sun far better than natural fibres. That is why so much of what genuinely performs in this climate is a blend rather than a pure natural fibre. A good blend gets close to the look of the natural cloth with the stability of the synthetic.

Solution-dyed and performance fabrics are made for exposure and have improved a great deal in appearance. They are worth looking at for the most punished windows.

Weight and fullness

Fabric is usually quoted in grams per square metre, and the figure tells you how it will hang as much as how it will wear.

Lighter cloth needs more fullness to look like anything, which means more width of fabric per metre of window. Heavier cloth holds a fold on its own, but it asks more of the track and needs more stack-back space at the sides when the curtain is drawn open.

The lining does the protecting

This is the part that gets skipped, and it is the cheapest place to spend well.

The lining takes the ultraviolet instead of the face fabric, which is the single biggest factor in how long the curtain lasts. It also makes the windows read consistently from the street rather than as a row of different colours. And it adds an insulating layer that does more for the room than the curtain fabric does when the glass is hot.

There are blackout linings, thermal linings and standard ones, and the right one follows the room. A bedroom wants something different from a sitting room.

Two layers beat one

Rooms with strong sun work better with a sheer or roller blind handling daytime glare and privacy without shutting out the light, plus a heavier curtain for the evening and for insulation.

A note on samples

A small swatch will not tell you how a fabric reads across a three metre drop. Pattern scale, sheen and the way light passes through all change with area. Look at a large piece, and look at it against the window it is destined for rather than under showroom light.

Our library on Al Najda Street holds more than 12,000 materials, fabrics and finishes, and there is no minimum order. The curtains page covers measuring, headings and hanging.

Questions

Questions we get asked

Which fabric holds up best in strong sun?: Polyester and polyester blends, generally, because synthetic fibres hold colour and dimension under ultraviolet better than natural ones. Wool resists fading well too but is a heavy specification for a hot room. Silk is the weakest against light. Linen and cotton drape beautifully and both weaken with sustained exposure, which is what lining is for.
Is lining really necessary?: Yes, and it is the most underrated line in the quotation. The lining takes the ultraviolet hit instead of the face fabric, evens out how the windows read from outside, and adds a thermal layer that matters more than the curtain itself when the glass is hot. Spending heavily on a face fabric and then economising on lining is the fastest route to disappointment within a year.
How much difference does the window orientation make?: A great deal. A south or west facing window takes direct sun for hours and needs a different specification from a shaded or north facing one in the same house. The right conversation starts with which way the window faces and how many hours of direct sun it gets, not with a colour.
Are blackout curtains enough on their own?: They handle darkness but not daytime. Rooms with strong sun work better with two layers, a sheer or roller blind managing glare and privacy during the day, and a heavier or blackout curtain for the evening and for insulation. Two layers give a level of control one cannot.