Johns Manville Polyiso Rigid Insulation Board 2.6 in. x 4 ft. x 8 ft. (Sheet)

Polyiso Rigid Insulation Board (2.6 in. x 4 ft. x 8 ft.)

Johns Manville polyisocyanurate (polyiso) rigid insulation board in a 4 ft. x 8 ft. sheet with 2.6 in. thickness. Designed for high-performance insulation applications where a rigid, easy-to-handle board format is preferred.

Key Features:

• Rigid Board Format: 4 ft. x 8 ft. sheet makes coverage straightforward for large areas
• High-Performance Insulation Core: Polyiso construction for efficient thermal insulating value in a slim profile
• Thickness for Build-Up: 2.6 in. board supports assemblies needing added insulation depth
• Jobsite Friendly Handling: Board-style insulation is easy to stage, cut, and fit as needed
• Category Fit: Intended for insulation and weatherproofing projects using flat rigid insulation boards

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What are the board dimensions and thickness?
A: Each sheet is 4 ft. x 8 ft. and 2.6 in. thick.

Q: What type of insulation is this?
A: It is a rigid polyiso (polyisocyanurate) insulation board.

Q: How is this product sold?
A: It is sold by the sheet (Unit of Measure: SH - Sheet).

Q: What category does this fall under?
A: Insulation & Weatherproofing → Flat & Fan Fold Rigid Insulation Boards.

Quietly Powerful Insulation, Cleanly Composed

There’s an understated luxury in materials that make a space feel effortlessly calm—this rigid polyiso board is exactly that kind of upgrade. In a generous 4' x 8' format with a substantial 2.6" thickness, it supports enveloping comfort without demanding attention. Use it where performance matters most, creating a more stable, insulated shell that lets your finishes shine. It’s the behind-the-scenes essential that elevates everyday living.

Choose this Johns Manville 2.6 in. x 4 ft. x 8 ft. polyiso board to build a more comfortable, better-insulated assembly—one sheet at a time.