Caulk Backer Rod, Gray, 250 ft L, 1/2in Dia MPN:809ZU5

This Caulk Backer Rod from M-D Building Products is a versatile and essential tool for any construction or DIY project. Its 1/2 inch diameter and 250 foot length provide a reliable seal against moisture and air leaks in various applications, including window and door installation, weatherproofing, and insulation. The gray color blends seamlessly with most building materials, ensuring a professional finish. With its durable construction and easy installation, this caulk backer rod is a must-have for any project, providing long-lasting protection and peace of mind for homeowners and professionals alike.

Top product features:

• Provides a gap between the backer rod and the surrounding surface for caulk to adhere to
• Helps to prevent caulk from being squeezed out beyond the intended area
• Can be easily cut to fit specific lengths and curves for precise application

Top product applications:

• Weatherproofing
• Sealing gaps around windows and doors
• Insulating and sealing gaps in foundation walls