M-D Building Products Weatherseal Platinum Expandable Foam – Black, 1-1/2 in

Overview

Meet the M-D Building Products Weatherseal Platinum expandable foam, a versatile solution designed to seal uneven gaps around windows with a sleek black finish. This 8 ft long strip is 1-1/2 in wide and 1-1/2 in high, making it suitable for a range of standard frame gaps while blending with dark frames and trims. The product features an expandable open-cell foam core that adapts to irregular surfaces, creating a more consistent barrier against drafts and moisture when applied correctly.

The installation is straightforward thanks to a simple peel-and-stick approach. This means you can apply the weatherseal directly to clean, dry window frames without special tools, enabling a quick upgrade to your sealing plan. The black color helps the seal disappear into the surrounding hardware, improving the overall look as well as the function.

Key benefits at a glance

• Expandable open-cell foam that fills gaps gradually and adapts to uneven surfaces
• Peel-and-stick design for easy, DIY-friendly installation
• Long 8 ft length with a compact 1-1/2 in width and height for versatile framing
• Black color to blend with most window frames and trim
• Prevents heat or air conditioning loss by forming a solid barrier when compressed
• Watertight seal potential when the foam is compressed by about 80%

The result is a seal that can help reduce drafts and moisture intrusion while adding a practical, low-profile finish to windows. The expandable foam works with a range of uneven gaps, making it a flexible choice for older homes, retrofit projects, or areas with irregular frame tolerances. While the product description highlights energy-saving potential and weatherproofing, actual results depend on proper surface preparation, gap size, and compression during installation.

Who is it for?

• Homeowners upgrading drafty windows
• Renovators seeking a simple, DIY weathersealing option
• Property managers looking for a versatile, long-seal solution for various frame gaps

To get the best results, clean the surface, measure your gaps, and apply the adhesive strip along the frame in a steady, even line. The foam will expand to fill the space and compress to seal as needed. This product is designed to work as part of a broader weatherization strategy, offering a practical option for improving comfort without a major overhaul.