Thermwell V5854 Insulation Window Tape 5/8in X 54ft

Product Description

The THERMWELL V5854 is a premium insulation window tape designed to seal and secure window insulation film during cold-weather weatherization projects. Measuring 5/8 inches wide by 54 feet long, this tape provides a reliable bond between film insulation and window frames, reducing air infiltration and heat loss. It is engineered for use with Frost King window insulation kits and supplies enough tape to complete a standard multi-window installation. HVAC service technicians, weatherization contractors, and knowledgeable DIYers use this tape as part of a complete window draft-sealing assembly.

This tape is suited for residential applications where window insulation film is installed over drafty or single-pane windows to improve thermal performance during heating season. It is specifically called out as a companion product for Frost King window insulation kits and is sold in a package quantity of 10 rolls, making it practical for multi-unit or multi-room jobs. Each roll delivers 54 feet of coverage, giving installers enough material to frame several standard windows per roll.

Key Features

• 5/8 inches wide by 54 feet long per roll — sized for standard window insulation film applications
• Compatible with Frost King window insulation kits for a matched installation system
• Sold in a package of 10 rolls for multi-window or multi-room projects
• Designed to create a secure bond between insulation film and window frame surfaces
• Supports reduction of air infiltration and conductive heat loss at window openings

Compatibility

Designed for use with Frost King Window Insulation Kits. Suitable as a general-purpose insulation window tape for residential window film weatherization assemblies.

Installation Notes

Window insulation tape is typically installed by weatherization contractors or knowledgeable homeowners as part of a seasonal energy-efficiency retrofit. Before applying, clean the window frame surface thoroughly to remove dust, grease, and moisture to ensure proper adhesion. Apply the tape along the frame perimeter before stretching and securing the insulation film. Follow the instructions included with the window insulation kit for proper film tensioning and sealing sequence.