What is the Best Mastic for Sealing Ducts?

When it comes to sealing ducts, it is important to use a product that meets the UL 181B standard and bears the mark 181B-FX for pressure sensitive tape or 181B-M for putty. Learn more about what type of mastic is best for sealing ducts.

What is the Best Mastic for Sealing Ducts?

When it comes to sealing ducts, it is essential to use a product that meets the UL 181B standard and bears the mark 181B-FX for pressure sensitive tape or 181B-M for putty. This is especially true when installing new ducts in interior frames or attics, or when installing a boiler and a socket for radiating. If you are using putty to seal joints in fiberglass plate ducts, it is recommended to use fiberglass mesh tape for all joints. Additionally, rivets, screws, and putty can be used to reconstruct ducts. To reduce air loss and increase energy efficiency, it is important to seal all joints and add insulation around ducts, especially in unconditioned spaces.

Specialized equipment and personnel are necessary for the production of specialized insulating parts, and managed inventory services in the workplace can help contractors achieve the necessary productivity while providing a cleaner and safer environment. Plastic and steel clamps (traction belts) are available for flexible ducts. Sto makes two products - a mesh tape and a sticky material - designed to seal air leaks at the seams of the coating. When sealing fiberglass plate ducts, it is important to use high-quality putty or adhesive tape. Additionally, the ducts should be wrapped in silver bubble wrap insulation. The argument in favor of omitting putty in ducts located within the conditioned space is understandable.

The Simple Saver textile coating system uses a strong, low-permeability vapor retarder to create the space necessary for the designed insulation thickness between structural elements and isolate secondary conductive elements from the secondary framework of the indoor air conditioner.