What is Thermaback, specifically?

Thermaback is Eclipse's branded name for a foam or acrylic layer laminated to the back of the face fabric during manufacturing. This laminated construction is why Eclipse panels consistently test at the top of the category for light blocking, generally 98% to 99.9%, versus 90% to 95% for woven-only fabrics without a laminated backing.

Is the Eclipse Palisade sold as a single panel or a pair?

As a single panel. Most Eclipse Palisade listings are for one 52-inch-wide panel, so covering a standard window with two panels means buying two separate listings, effectively doubling the price compared to brands that sell matched pairs, like Lush Decor or Exclusive Home.

Does the Thermaback backing make the curtain feel stiffer than a regular curtain?

Yes, noticeably. The laminated backing adds weight and reduces the fabric's natural drape compared to an unlined curtain or a woven-only blackout panel. Most buyers consider this an acceptable tradeoff for the light-blocking performance, but it is a real difference in hand-feel worth knowing before buying, particularly for buyers who prioritize a soft, flowing drape.

How long does the Thermaback backing typically last with regular washing?

Most owner reports describe the backing holding up well for several years of regular washing on a cold, gentle cycle with hang-drying. Heat from a hot dryer is the most commonly cited cause of premature backing degradation, including cracking or separating from the face fabric, across Thermaback and similar laminated blackout products generally.

Eclipse Palisade Blackout Curtain Review: The Category Benchmark

The Eclipse Palisade uses Thermaback triple-weave technology to block 98% to 99.9% of light, the highest tested rate in this category. At typically $20 to $25 per panel, it's the benchmark other blackout curtains get compared against. Full review.

Every other blackout curtain in this category eventually gets compared to one number: how close it comes to Eclipse's Thermaback blocking rate.

The Palisade is the clearest expression of that technology, a 52-inch panel that blocks 98% to 99.9% of light through a foam-laminated backing bonded to the face fabric, rather than relying on weave density alone.

At typically $20 to $25 per panel, it costs more per panel than most budget woven curtains, but less than most people assume for a panel that consistently tops light-blocking comparisons in this category.

The main tradeoff is the fabric itself: the same lamination that blocks so much light also makes the panel noticeably stiffer than an unlined curtain, and it is sold per panel rather than as a matched pair.

What You Are Buying

The Palisade ships as a single 52-inch-wide panel with a grommet top, available in 63, 84, 95, and 108 inch lengths and a wide range of solid colors, from grey and mineral tones through darker charcoals and blacks.

The Thermaback layer is laminated to the back of the woven face fabric during manufacturing, distinct from a separately sewn-in lining or a clip-on liner sold apart from the curtain.

Performance

Light blocking: In every colorway tested, the Palisade blocked the highest percentage of light of any panel in this category, with only a very faint residual glow visible under intense direct sun, concentrated at the panel's edges rather than through the fabric itself.

Heat insulation: The laminated backing produces a genuinely noticeable temperature difference in a sun-facing room during peak afternoon hours, consistent with the brand's stated energy-loss reduction claims.

Noise reduction: Outside noise is meaningfully dampened with the panel closed, in line with similar claims from other laminated blackout brands, though this remains a partial rather than complete noise-blocking effect.

Durability: Owner reports describe the Thermaback backing holding up for multiple years of regular use when washed cold and hung to dry, with hot dryer use cited as the most common cause of premature wear.

What It Does Well

Raw light-blocking performance is the clear strength, and it is not a marginal edge. The gap between the Palisade's 98%+ rate and the 90% to 95% typical of non-laminated fabrics is noticeable in practice, not just on a spec sheet, particularly in a room with strong direct sun.

The four available lengths make it easier to match the panel to an actual window and ceiling height rather than settling for one standard size.

What Falls Short

Per-panel pricing adds up. Because the Palisade is sold as a single panel, covering a standard window with a full pair costs roughly double the single-panel price, more than several pair-based competitors at a similar or lower total cost.

Stiffer drape. The laminated backing does not flow or gather as softly as an unlined curtain, a real if secondary consideration for buyers who care about the fabric's look when open.

Who Should Buy It

The Eclipse Palisade is right if: maximum light blocking is the top priority, whether for a shift worker, a bright bedroom, or a room facing intense direct sun.

Consider alternatives if: budget for a full matched pair is the bigger constraint, in which case Lush Decor's Insulated Grommet pair offers strong blocking in dark colorways at a lower total cost for two panels.

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