Mercer Heavyweight 100% Blackout Thermal Curtain

Regular price £47.99 GBP
Tax included. Taxes included. Discounts and shipping calculated at checkout.

20% Off Everything
Code: AUTUMN20

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Made to Measure
Direct-to-Consumer Pricing
Premium Craftsmanship
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Description
Our blackout thermal curtains are crafted from 370 gsm heavyweight polyester with a refined twill texture and reversible dual-tone design. Built with an integrated blackout backing, they deliver complete light blocking, enhanced insulation, and a sophisticated, modern look for any space.
Specification:
  • Fabric Type: Polyester Coated Fabric
  • Material: 100% Polyester
  • Fabric Weight: 370 gsm
  • Fabric Width: 280 cm
  • Light Blocking(Without Lining): 100% blackout when properly installed
  • Sold As: Pair/Single (Made to Measure)
Features:
  • Heavyweight Construction: Woven at 370 gsm, this substantial fabric feels thick and structured and showcases a fine twill texture for premium visual appeal.
  • Dual-Tone Design: Reversible panels offer contrasting tones on each side, adding flexibility and versatility to your room styling.
  • Complete Light Blockout & Privacy: Blocks 100% of incoming light when properly installed, creating a peaceful, private atmosphere ideal for sleep or media viewing.
  • Superior Insulation & Noise Reduction: Thick, dense weave helps stabilize indoor temperature and dampens outside noise for enhanced comfort.
  • Elegant Texture & Colors: The refined twill surface and subdued tones—from earthy neutrals to deep blues—seamlessly integrate with modern minimalism, new Chinese, and contemporary décor.
  • Eco-Friendly Dyeing: High color saturation and excellent colorfastness are achieved through environmentally responsible dyeing, ensuring long-lasting, fade-resistant fabrics.
Care & Notes:
  • Cleaning: Spot clean or hand wash gently with cold water and mild detergent; avoid soaking or scrubbing the coated side.
  • Do Not Machine Wash / Dry Clean: May damage the blackout coating.
  • Drying: Hang to air dry; avoid direct sunlight on coated surface.
  • Ironing: Low heat on front side; use a cloth or steamer; avoid direct high heat on coating.
  • Do Not Bleach: Avoid harsh chemicals.
  • Installation & Handling: Ensure rods support panel weight; keep away from sharp objects.
Shipping Info

🚚 Shipping & Production

  • Production: 2–5 working days
  • Shipping from the UK: 7–12 working days
  • Times are estimates; some orders may take longer. No refunds for delays.
  • Need your order by a specific date? Contact support@joydeco.co.uk.

📦 Shipping Notes

  • Delivery only on weekdays (excludes public holidays)
  • Delivery may be longer during sales, holidays, or extreme weather
  • We do not ship to military addresses or PO Boxes

🔍 Tracking

  • Tracking number emailed once shipped
  • Carriers: DHL, FedEx, UPS, TNT

💰 Import Duties

  • Customs fees vary by country and are not included in pricing

🛡️ Shipping Protection (Optional)

  • Covers loss, damage, or non-delivery
  • Claims must be submitted within 90 days
  • Refunds available before dispatch; no refunds once your order has been shipped

🔗 Full details: Shipping Policy

Return

🛑 Please check before ordering:

  • Most items cannot be returned for personal reasons (e.g., changed mind, size fits but not suitable, color not as expected).
  • Entitled for return or exchange only if you received the wrong item or wrong lining type. Photos and a brief explanation are required.

⏰ Return Window:

  • Requests must be submitted within 30 days of receiving your order.

💰 Refunds & Fees:

  • Return shipping cost is paid by the customer.
  • Refund = 80 % of your order value (deducting handling, packaging, and shipping fees).

⚠️ Important:

  • Contact support@joydeco.co.uk before returning or exchanging.
  • Do not refuse delivery or send the package back to the original address without confirmation.

💌 Need Help?

🔗 Full details: Refund Policy

Measuring Guide

Simplify your curtians measuring process with our easy-to-follow tips. Make sure your curtains fit perfectly!

Steps:

  1. Measure Your Curtain Rod or Track.
  2. Measure the Curtain Dorp.
  3. For curtain rods or tracks, measure from the top of the rod or track to your desired curtain endpoint.
  4. For curtain rings or track gliders, measure from the bottom of the ring or glider to your desired curtain endpoint.
  5. Double-check your measurements before ordering.

🔗 For detailed measurement tips: Measurement Guide

Our blackout thermal curtains are crafted from 370 gsm heavyweight polyester with a refined twill texture and reversible dual-tone design. Built with an integrated blackout backing, they deliver complete light blocking, enhanced insulation, and a sophisticated, modern look for any space.
Specification:
  • Fabric Type: Polyester Coated Fabric
  • Material: 100% Polyester
  • Fabric Weight: 370 gsm
  • Fabric Width: 280 cm
  • Light Blocking(Without Lining): 100% blackout when properly installed
  • Sold As: Pair/Single (Made to Measure)
Features:
  • Heavyweight Construction: Woven at 370 gsm, this substantial fabric feels thick and structured and showcases a fine twill texture for premium visual appeal.
  • Dual-Tone Design: Reversible panels offer contrasting tones on each side, adding flexibility and versatility to your room styling.
  • Complete Light Blockout & Privacy: Blocks 100% of incoming light when properly installed, creating a peaceful, private atmosphere ideal for sleep or media viewing.
  • Superior Insulation & Noise Reduction: Thick, dense weave helps stabilize indoor temperature and dampens outside noise for enhanced comfort.
  • Elegant Texture & Colors: The refined twill surface and subdued tones—from earthy neutrals to deep blues—seamlessly integrate with modern minimalism, new Chinese, and contemporary décor.
  • Eco-Friendly Dyeing: High color saturation and excellent colorfastness are achieved through environmentally responsible dyeing, ensuring long-lasting, fade-resistant fabrics.
Care & Notes:
  • Cleaning: Spot clean or hand wash gently with cold water and mild detergent; avoid soaking or scrubbing the coated side.
  • Do Not Machine Wash / Dry Clean: May damage the blackout coating.
  • Drying: Hang to air dry; avoid direct sunlight on coated surface.
  • Ironing: Low heat on front side; use a cloth or steamer; avoid direct high heat on coating.
  • Do Not Bleach: Avoid harsh chemicals.
  • Installation & Handling: Ensure rods support panel weight; keep away from sharp objects.

Features of Blackout Curtains

  • Energy-saving

    Blackout curtains can also help you save on energy costs by keeping out drafts and reducing heat loss during the winter, and blocking out sunlight during the summer to keep your home cooler.

  • Noise Reduction

    In addition to blocking out light, blackout curtains also help reduce noise from outside. They are ideal for bedrooms, nurseries, or any room where you want to create a dark and relaxing environment.

  • Privacy

    Blackout curtains also provide privacy by preventing people from being able to see into your home from outside.

  • Light Blocking Degree

    Blackout Curtains have certain degree of light blocking effect, but it is not 100% completely light blocking. The shading degree of this curtain is 50% -90%, and the darker the color, the better the shading effect.

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    About Joydeco

    Our Story

    img

    Joydeco is a home living brand focused on affordable luxury window décor. We design blinds and curtains for real homes — places where light changes throughout the day, routines repeat, and comfort matters more than perfection.

    Choosing window décor can feel complicated. Sizes, fabrics, light levels — small decisions that make a big difference once everything is installed.

    Joydeco exists to make that process feel easier. Built on decades of textile expertise, we design products that reduce decision stress through thoughtful guidance, clear choices, and designs that naturally fit into everyday spaces.

    So instead of overthinking, people can choose with confidence — and live with ease. Because true comfort doesn’t need to be explained. It simply feels right.

    Joydeco, affordable luxury window décor, designed to feel right — effortlessly.

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    Your browsing history

    • 5 stars: 15 (88%)
    • 4 stars: 2 (12%)
    • 3 stars: 0 (0%)
    • 2 stars: 0 (0%)
    • 1 star: 0 (0%)
    l
    ladybossplanner

    I’m reviewing/comparing several sets of curtains. Maybe this will help you narrow down your options. I’m using a double rod. And all my faith is in the anchors in the wall! Haha! My curtain combination consists of the following 4 sets of curtains in 96 inch length:- RYB HOME Linen Textured 100% Blackout Curtains, color: Burlap- Joydeco Faux Linen Blackout Curtains, color: Black- RYB HOME White Curtains Sheer - Linen Texture Semi Sheer, color: White- 100% Blackout Shield Linen Blackout Curtains, color: Cream (not shown in the video) they are on the same bar as the sheer ones, behind the black and brown sets.I intentionally hung my curtains from ceiling to floor; I have 8ft ceilings. At first it was for aesthetics but now I realize it contributes to the effectiveness of energy efficiency. And I intentionally chose to hang a combination of colors and textures for a layered look. The colors and textures give my window and room more interest and dimension. Since this is the hottest room in the house, and it’s on the 2nd floor… and I live in a desert! So I am after maximum heat blocking. I didn’t plan to use this many curtains, it just ended up that way when I wanted to redesign my office. So here is the breakdown.First,100% Blackout Shield Linen Blackout Curtains, color: Cream (not shown in the video) they are on the same bar as the sheer ones, behind the black and brown sets. Rating: 5 starsI’ll start with the ones I’ve had the longest. The one that I have on 10 windows in my home. I’ve had these up for over a year. These are fantastic! They have a gray backing and are truly 100% blackout. And they do a good job blocking heat and reducing the winter cold from coming in. Before I got these, I only had Venetian blinds and they don’t do anything for temperature or light control. My electric bill was hundreds of dollars. I noticed a big difference in the temperature of my home after putting these up. I love the cream color as it is a versatile shade that complements my decor. They were wrinkled upon arrival but a few minutes on the dryer fixed that. They hang well and look great. Well made and energy efficient. And blocks the sunlight. The linen texture is pretty but with the performance of blackout curtains. The listing does not specify if there is a multilayer construction; nonetheless, I find them to be very effective.RYB HOME White Curtains Sheer - Linen Texture Semi Sheer, color: White Rating: 5 starsI also have these on 10 windows in my home. I’ve had these up for over a year. I enjoy having these curtains to let some sunlight in while still keeping some privacy depending on the time of day and inside lighting. They are semi sheer. The linen texture is beautiful and diffuses the sunlight so it’s not so direct. The white color keeps things light and airy. They are well made and hang well. A few minutes in the dryer took care of any wrinkles from the packaging. I’m very happy with these.When I decided to redesign my office, I did not want to remove those 2 sets of curtains because I love them so much. But my office had too much white in it. I needed more contrast to make it look and feel better. So that’s when I added the double curtain rod and more curtains! This was an opportunity to put more color in the room. And I thought additional blackout curtains might be helpful against the heat. I was right!RYB HOME Linen Textured 100% Blackout Curtains, color: Burlap. Rating: 4 starsBurlap is a beautiful medium brown color. And there are multiple shades of brown woven together to make the color. I like the texture of the fabric and the gray backing. It is truly blackout. But the reason they aren’t 5 stars is because the wrinkles in the curtains are a bit aggressive. I put them in the dryer and that did not help. I sprayed them down with a little water then put them in the dryer on 2 cycles… still wrinkled. So I hung them anyway and steamed them… they are still wrinkled! Even despite hanging for weeks. While they are less wrinkled from the start, they are more wrinkled than I want them to be. I hope the wrinkles fall out with more time. Anyway, I do like everything else about these. The construction is good and I love the color. This color was not available in the other curtains I have. The weight is about the same as the cream ones. The listing says it has a multilayer construction which seems effective to me.Save the best for last!Joydeco Faux Linen Blackout Curtains, color: Black. Rating: ALL the Stars! Haha! 100 Stars!Okay now these curtains are ELITE! Now these feel like luxury curtains. They are actually heavier than the other brands I have. The sewing is immaculate. Not that I saw anything wrong with the others. But the thing is, I NOTICED how perfect the stitching was on these. they feel different, like the layers are more robust within the fabric. The listing says it has a multilayer construction which seems very effective to m...

    J
    J. VanLaningham

    This truly blocks all light from coming through the fabric; I bought the one described as "3-layer". See in my photo that it visually appears like just one heavy layer, but I have enough experience with drapes to know that if it was just regular fabric, sunlight would 'glow' through the weave. This is an attractive heavy 'blackout' fabric! Wonderful. Just remember that you can't have any gap around curtain edges if you want to have the room as dark as midnight.

    N
    Nicole

    Beautiful thick curtains. They do a phenomenal job blocking the sun and making the room pitch black.Highly recommend.

    L
    Laura

    The curtains definitely do what they are supposed to do. I would purchase again.

    L
    LizO

    I give these a 4 1/2 star but of course you cannot do that. I knocked a 1/2 star off only for the fact that all manufacturers need to do one simple change to back tab curtains so they hang better and that is to bring the back tab down about a 1/2 inch in order for them to gather better at the top, especially given the weight of these curtains. Otherwise, these are seriously quality curtain panels and the cost is amazing!The "X_Triple Grey" are 96 inches and they are truly black out. I looked long at the description because going through other reviews, many seemed disappointed with them but since there are two different types of curtain panels on this product page, you need to know that one is 100% black out and the other one is room darkening - these are distinctly different. Look for the "X_Triple" in order for 100% black out.The fabric is thick because there are three layers and they weigh about 7 pounds for both panels. That's a lot of fabric! It's is not as flowing as I would like. To put it one way, it's like a thick denim. But I wanted a thick material that keeps the cold out during the winter months as I have an 8 foot patio door so for that reason I keep the stars higher up.I got these the day prior to me writing this but I knew immediately that these were going to fit my needs well. I still need to get them hemmed for the specific allowance for the patio door they are covering and fix the back tab (again, that's on all manufacturers who create a back tab product. I would have preferred a track system to mount on the ceiling (which would have reduced the need to hem) but the budget and the fact that winter is coming didn't allow me to do that so I got a double rod here on Joydeco(that I also like) that fit my budget better.One way I know these are truly black out is that I have a street lamp out back that is so bright, you could light a stadium with one lamp. Okay, a bit of an exaggeration but it's the only thing I truly dislike about my home. When I turned the lights off for the night last night, with the wrap around rod I used, there was zero light coming in.So if you're looking for a good quality black out curtain that also has thermal qualities to it, the X Triple curtain panel is what you need.

    S
    Shania Lynch

    My favorite curtains! Blackout, great material, color is amazing, soft, easy to clean

    P
    Porchia

    Thick, black heavy curtains that block out all outside light. Works very well!! Got them for the living room to help it stay cool since the sun sets in my living room. I bought more for the bedroom and I sleep like a baby since no light enters my room and my blinds aren't making noise because I have my ceiling fan on high. These are awesome curtains.

    j
    jessica

    It’s not what I wanted but it was still A VERY GOOD QUALITY! Very thick

    T
    Todo muy bien lo recomiendo
    Muy buenas

    Buena calidad

    S
    Sean sullivan

    These curtains are long enough for high window coverings that go down to the floor, nothing fancy, but still effective. We live in Phoenix and get a lot of sunshine in the morning in our bedroom.. these not only help block out the sun, they have helped save cost on our electric bill. Great quality for the cost.

    L
    Liz

    Good quality blackout curtains and they are beautiful! The streetlight shine right into my bedroom and I like to sleep in complete darkness. These curtains are true blackout. Just make sure they are hung floor to ceiling so light doesn’t stream through the top and bottom.

    C
    Connie M.

    Truly black out. We use it on tension rod across a hallway to make the back bedroom and bathroom private and darken the hall light.

    K
    Kendy LaRoche

    Work great, help block extreme temperatures from the room, too

    P
    Professor Rawlerson 💕💚

    These are blackout curtains. They serve it's purpose.

    J
    Janice Jung

    These look very nice and do a great job of blocking out light.

    E
    Esther

    I love the color. The curtains are so beautiful

    P
    Predrag Opacic

    Amazing product, 100% blackout. I've purchased one and next day another one