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Cut Window Heat 25–33%: Curtain Materials and DIY Fixes That Work

Posted by BLG on 2026 Sep 22nd

Cut Window Heat 25–33%: Curtain Materials and DIY Fixes That Work
Cut Window Heat 25–33%: Curtain Materials and DIY Fixes That Work For raw insulating power, nothing beats a multi-layer or foam-backed thermal panel, followed closely by dense velvet, wool, and triple-weave polyester. But the material matters less than you think: a wide, floor-length curtain that seals at the edges and hangs close to the wall will outperform a heavier fabric hung loose and short. Pick a good insulating fabric, then install it like you mean it. TL;DR: Thick fabrics like velvet, wool, and triple-weave polyester perform best when installed with full coverage, close to the wal …