Curtain Fabric Guide: Blackout, Sheer, Linen Blend & Eyelet Headings Explained

Quick Answer: Curtain specification combines two decisions: fabric type (blackout, sheer voile, linen blend, velvet) and heading type (eyelet, pencil pleat, tab top, rod pocket). Blackout is achieved through three constructions: coated interliner, foam-back lining, or triple-weave woven fabric — each at different weights, drape characteristics and cost points. Eyelet headings are the UK and USA retail standard; pinch-pleat is standard for hospitality. Curtains from Pakistan are produced in all fabric and heading combinations for retail, hospitality and institutional buyers.

Curtain Specification: Fabric and Heading Together

Curtains are one of the highest-value items in the home textiles category — and among the most technically complex to specify correctly. For procurement managers sourcing curtains from Pakistan, two decisions determine the product's market fit and retail performance: fabric type and heading type. A blackout lining specification in the wrong heading configuration, or a sheer voile in a heading type the destination market does not recognise, creates returns and markdowns.

Pakistan's home textile manufacturers produce the full curtain fabric range — blackout, sheer, linen blend, velvet and polyester — alongside all major heading types. This guide covers what the specification decisions mean for procurement.

Blackout Curtain Fabrics

Blackout curtains block or significantly reduce light transmission. Three distinct constructions achieve the blackout effect, each with a different weight, texture and cost profile.

Foam-Backed Blackout

Construction: A woven fabric (polyester, cotton-polyester blend, or jacquard) with an acrylic foam coating applied to the back face. The foam layer is what blocks light. A third woven lining is sometimes bonded over the foam for a cleaner reverse appearance.

Blackout performance: True blackout (0% light transmission) is achievable with foam backing of sufficient density. Most retail specifications target 95–99% light blocking — certified by a lux measurement test rather than visual inspection.

Weight: 250–400 GSM for the finished multi-layer construction.

Limitation: Foam backing can crack under prolonged machine washing at temperatures above 40°C. For hotel programmes using professional dry-cleaning, this is not an issue. For retail programmes with machine-washable care claims, the foam must be cross-linked acrylic — verify with the mill before specifying.

Woven Blackout (Triple-Weave or Double-Layer)

Construction: The blackout effect is achieved through weave density alone — a triple-weave construction uses three intersecting yarn layers that block light through the physical density of the fabric structure.

Advantages over foam backing: Fully machine washable at 30–40°C; softer drape; no risk of foam cracking; more sustainable (no acrylic coating).

Blackout performance: 90–98% light reduction — excellent for most retail and hotel applications. True 100% blackout is harder to achieve than with foam backing.

Weight: 200–320 GSM depending on weave density.

Best for: Hotel room curtains in 4-star and above properties; retail programmes targeting eco-conscious consumers; programmes where long care life is a marketing claim. Hotel programmes combining curtains with coordinated cushion covers and pillow covers can be sourced in a coordinated programme.

Blackout Lining (Applied Separately)

A separate blackout lining fabric is sewn to the back of a decorative woven or printed curtain at the heading. The lining does the light-blocking work; the face fabric provides the visual character.

Advantages: Decouples the decorative design from the functional performance — allows any face fabric to become a blackout curtain by adding a certified lining.

Lining materials: Cotton sateen with foam back is the standard. Microfibre blackout lining is lighter and easier to sew. For the full certifications and compliance requirements on blackout lining materials under EU chemical regulations, verify the OEKO-TEX scope covers both face fabric and lining.

Sheer Curtain Fabrics

Sheers filter light rather than blocking it — creating diffused, ambient light while maintaining daytime privacy. The retail category includes several distinct sheer constructions.

Voile

Construction: A plain-weave fabric in very fine polyester or cotton-polyester blend yarn. The open weave creates the characteristic sheer, transparent effect.

Weight: 60–100 GSM. Much lighter than blackout fabrics.

Design: Voile can be plain (white, ivory, pastel colours), printed with reactive or pigment print, or woven with small dobby or clip patterns. Embroidered voile is a premium retail segment in the UK and EU.

Care: Machine washable at 30°C. Polyester voile does not require ironing if hung immediately from the wash.

Organza

A stiffer sheer than voile — the crisp, structured drape is its visual signature. More common in formal interior and theatrical applications than everyday retail.

Linen Blend Curtain Fabrics

Linen and linen-cotton blend curtains are a growth segment in UK, Northern European and Australian retail — driven by demand for natural, textured aesthetics in contemporary home furnishing.

Construction: Typically 45–70% linen content with cotton to improve washability and reduce shrinkage. Pure linen curtains require more careful care instructions.

Aesthetic: The slubby, natural texture of linen reads as premium and artisanal. Linen blend curtains photograph well for lifestyle retail marketing and e-commerce product pages.

Heading types on linen: Eyelet and rod pocket headings are the most practical for linen — the weight of the fabric makes pencil pleat less desirable for lighter-weight linen blends. Heavy linen (200+ GSM) suits pinch pleat headings for a structured, formal look.

Care label requirement: Specify maximum 30°C machine wash and "cool iron on reverse" for linen-heavy blends. Higher temperatures cause significant shrinkage. For EU retail, fibre content percentage must appear on the care label under EU Textile Regulation 1007/2011.

Velvet Curtain Fabrics

Velvet curtains are the premium curtain segment — UK and Northern European retail peak from September to February. Cut pile in cotton, cotton-polyester or polyester-only velvet creates the rich, light-absorbing surface.

Light filtering: Velvet's dense pile provides natural light reduction (40–70%) without requiring a separate blackout backing — though a blackout lining can be added for full light control.

Weight: 350–550 GSM. The heaviest curtain fabric at standard construction.

Heading suitability: Pencil pleat and pinch pleat headings work well with velvet's drape weight. Eyelets in velvet require reinforced eyelet rings to prevent tearing under the weight.

Care: Dry-clean only for most cut velvet. Some polyester velvets are machine washable at 30°C — specify care requirements with the mill and confirm on the care label before buyer approval.

Heading Types — The Critical Retail Specification

The heading type determines how the curtain hangs and how it is sold at retail. Heading type preference varies significantly by market.

Eyelet specification detail: Specify eyelet diameter (standard 35–40mm internal diameter for most pole diameters; 50mm for thicker poles), eyelet colour (silver, antique brass, black, brushed nickel), and heading height (standard 7–9 cm from top edge to eyelet centre). See the certifications and compliance page for REACH requirements on eyelet metal components for EU retail — nickel content in metal fittings is restricted under EU Regulation 1907/2006.

Lining Options

For hotel programmes, unlined curtains are rarely specified above 3-star level — thermal lining is standard for energy efficiency and sound reduction. For retail, the trend in the UK and EU has moved toward offering both lined and unlined options in the same fabric, allowing consumers to choose.

Certification Requirements

Sourcing Curtains from Pakistan

MZ Global Trading sources curtains in all fabric types and heading configurations from Pakistan's certified home textile manufacturers. Programmes covering curtains alongside coordinated cushion covers and pillow covers are available through a single consolidated RFQ.

Request a sourcing quote with your fabric type, heading specification, lining requirement, drop and width dimensions, and annual programme volume — we return mill options and indicative FOB pricing within 3–5 business days.