Pros
- Highly transparent for maximum natural light
- Strong tenacity from soft PE material resists everyday wear
- Simple adhesive straps enable tool-free install and easy access
- Versatile for combining films to cover larger areas
- Foldable design supports reuse year after year
Cons
- Not suited for windows opened very frequently
- Vulnerable to punctures from sharp objects like knives
- Requires careful measuring to ensure proper overhang
This Mellroom Adjustable Window Insulation Kit is designed for homeowners battling winter drafts, offering a 47x63in transparent polyethylene film that's cuttable to fit various window sizes including the frame. Ideal for apartments, homes, or any space needing simple seasonal insulation, it uses hook-and-loop adhesive straps for a secure seal without tools or drilling.
Standout features include its 180μm thickness for wind resistance, near-total clarity to preserve views and sunlight, and the ability to peel back for ventilation. In real-world use, it effectively blocks cold air infiltration while allowing easy window access, making it practical for milder days. The soft PE material provides good tenacity, holding up against moderate winds when properly installed.
Build quality shines in its reusability; fold and store the film for future winters, and combine two kits for bigger coverage. Installation is straightforward per the included manual, though uneven frames may need folding or trimming. Drawbacks include unsuitability for high-traffic ventilation windows and sensitivity to sharp tools.
Overall, this kit delivers reliable performance for cost-conscious users seeking an easy, effective way to insulate without permanent changes. Highly recommended for occasional winter use where light and air access matter.
Brand: Mellroom
Coverage: Up to 120cm x 160cm (or 120cm x 320cm when combining two films)
Thickness: 0.18mm (180μm or 7mil)
Dimensions: 63in L x 47in W
Material: Polyethylene (PE)
Best Sellers Rank: #29 in Weatherproofing Window Insulation Kits
Recommended Use: Window insulation for winter, keeping cold out
Measure your window including the frame, then select a kit larger by at least 2-4 inches on each side. For wall mounting, add extra for the 1-inch strap width. Cut the film to fit, and fold 90 degrees for narrow or uneven frames.
Use indoors on glass windows; for outdoors or non-glass, secure with nails. Avoid frequent openings to maintain seal integrity. Combine films with straps for oversized windows, and store folded when not in use.