The best light-blocking window treatment depends on whether you need a removable cover, full curtains, or a way to stop light leaking around existing blinds. The BKSAI portable shade is best for magnetic, no-drill installation; Sumobaby suits buyers who want a larger adhesive-mounted cover; and MIULEE curtains offer a traditional rod-hung option. For side gaps, BERISSA is designed to pair with blinds, while MIULEE’s linen-look curtains provide a room-darkening option with a decorative finish.
| Product | Best For | Installation Style |
|---|---|---|
| BKSAI Portable Blackout Curtain | Removable blackout coverage | Adhesive-backed magnets |
| Sumobaby Portable Blackout Blind | Large temporary coverage | Self-adhesive hook-and-loop tape |
| MIULEE Dark Grey Curtains | Everyday room darkening | Grommets and curtain rod |
| BERISSA Light Blocking Strips | Side gaps around blinds | Self-adhesive strips |
| MIULEE Linen Blackout Curtains | Full blackout with a linen look | Grommets and curtain rod |
BKSAI Portable Magnetic Blackout Curtain
Best for: People who need removable light coverage for a bedroom, nursery, media room, or travel use. This 39-by-57-inch curtain uses magnetic attachment rather than a curtain rod or drilling.
The maker describes the 420D Oxford fabric as providing complete blackout. Adhesive-backed magnets attach to the window frame, and the curtain’s iron pieces align with them. The listing also says the cover can reduce direct sunlight and help limit heat entering a room.
Why it was selected: Its portable format and tool-less magnetic setup make it distinct from conventional rod-mounted curtains. Consider: Measure the window before choosing it; the listed dimensions may not cover larger windows.
Sumobaby Portable Blackout Window Blind
Best for: Buyers looking for a 50-by-60-inch temporary window cover that does not require drilling. It is made from polyester and uses reflective silver coating with high-density black fabric.
Sumobaby says the shade blocks sunlight and UV rays, darkens a room, and can reduce heat. Installation uses 15 pairs of self-adhesive hook-and-loop tape, which the listing says can be applied to flat surfaces such as glass, walls, and aluminum alloy windows.
Why it was selected: Its larger listed size and removable attachment system make it a practical choice for temporary coverage. Consider: Adhesive mounting depends on the surface; check that the intended area is flat and suitable for the tape.
MIULEE Dark Grey Grommet Blackout Curtains
Best for: Bedrooms and living rooms where a conventional pair of curtains is preferred. The package includes two 40-by-63-inch panels, with six silver grommets per panel and a stated 1.6-inch inner diameter.
The 225 GSM polyester fabric uses triple-layer weaving with a black-yarn middle layer. The product information gives different light-blocking levels by color: darker shades block up to 95%, medium shades up to 80%, and white reduces light by 60%. It also describes UV reduction and privacy benefits.
Why it was selected: This option combines a standard rod-hung format with clearly stated, color-dependent light reduction. Consider: The listing does not claim every color blocks all light; choose a darker shade for stronger light reduction.
BERISSA Light Blocking Strips For Blinds
Best for: People who already have shades or blinds but see light coming through the sides. The two PVC strips measure 58 inches long and include a built-in light-blocking brush, according to the product details.
The self-adhesive strips are designed to be measured, scored, and snapped or trimmed to fit. Their brush is intended to address scattered light that may pass through side gaps. They are a targeted add-on rather than a full window covering.
Why it was selected: It addresses a common problem that curtains and shades may leave behind: side leakage. Consider: Measure the gap and window before trimming; installation requires cutting the strips to fit.
MIULEE Linen-Look 100% Blackout Curtains
Best for: Buyers who want full blackout coverage in a traditional curtain style with a faux-linen appearance. The set includes two 52-by-84-inch panels, each with eight grommets and a 1.6-inch inner diameter.
The product listing describes the curtains as blocking 100% of light and using triple-weave construction for insulation against heat and cold. It also states that the fabric can reduce noise and provide privacy. The grommet design is intended for hanging on a curtain rod.
Why it was selected: It offers wider panels and a longer drop than the other listed rod-hung option, making it worth considering for larger or taller windows. Consider: Confirm panel dimensions and rod fit before buying; the listing does not specify that the set includes a rod.
Buying Guide: How To Choose Light Blocking Window Treatments
Do you need a temporary cover or a permanent setup?
Portable magnetic and hook-and-loop shades suit renters, travel, or windows where drilling is not wanted. Rod-hung curtains are a better fit for daily use when a curtain rod is already available. Side strips make more sense when existing blinds work well but leave visible gaps.
How much light reduction do you need?
Check the product’s stated performance rather than relying on the word “blackout” alone. MIULEE’s dark grey curtains list up to 95% light blocking, with lower figures for lighter shades. The other listings describe complete or 100% blackout, but actual coverage also depends on window size, fit, and light leaking around the edges.
Which measurements should you check?
Measure the glass or frame and decide whether the covering must extend beyond the window to limit edge leakage. Compare those measurements with each panel or shade’s listed dimensions. For curtains, check both panel width and length, plus the grommet diameter against the rod you plan to use.
Is installation and surface compatibility important?
Magnetic and adhesive products avoid traditional mounting hardware, but they rely on their attachment method and the window area’s shape or surface. BERISSA strips must be trimmed, while hook-and-loop tape is described for flat surfaces. If easy removal matters, review how the adhesive is applied and follow the product’s installation directions.
Frequently Asked Questions
What is the best type of window treatment for blocking light?
It depends on the window and installation needs. Full blackout curtains or a fitted portable shade cover the main window, while side light-blocking strips target gaps around existing blinds.
Do blackout curtains block every bit of light?
Not always. Fabric performance varies, and light can enter around the sides, top, or bottom. Check the stated blocking level and consider window coverage and fit.
Can portable blackout shades be installed without drilling?
The BKSAI and Sumobaby options use magnetic or adhesive hook-and-loop attachment instead of drilled hardware, according to their listings.
How can I reduce light leaking around blinds?
Measure the side gaps and consider purpose-made light-blocking strips such as BERISSA. They are designed to attach beside blinds and can be trimmed to fit.
Are darker curtains better for blocking light?
For the MIULEE dark grey curtains, the listing states that darker colors block more light than medium or white shades. Compare the specific fabric and color claims before choosing.