Insulation Facing Options

Insulation facing materials serve two key purposes on fiberglass blankets. First, they act as a vapor retarder or barrier to manage moisture. Second, they provide a durable, protective layer over the insulation. Additionally, this facing delivers a clean, finished appearance suitable for any metal building interior. While several options are available, WMP®-VR-R Plus is a frequently used standard facing, and WMP-50 is a common choice for heavy-duty applications. “Lamtec” and “WMP” are registered trademarks of Lamtec Corporation.

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WMP-VR Facing

✓ Polypropylene On Top Side
✓ Natural Kraft Paper Backing
✓ Light Duty
✓ Available In Black

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WMP-VRR Plus

✓ Polypropylene On Top Side
✓ Metallized Polyester Backing
✓ Light Duty
✓ Available In Black

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WMP-10 FACING

✓ Polypropylene On Top Side
✓ White Kraft Paper Backing
✓ Moderate Duty
✓ Available In Black

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WMP-50 Facing

✓ Polypropylene On Top Side
✓ Metallized Polyester Backing
✓ Heavy Duty
✓ Available In Black

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Gymguard Facing

✓ Polypropylene On Top Side
✓ Kraft Paper Backing
✓ Heaviest Duty
✓ Not Available In Black

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Facing materials are applied to fiberglass insulation blankets to serve as a vapor retarder as well as a protected cover over the fiberglass

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Tabs

Tabs are the extension of the vinyl facing past the fiberglass insulation blanket, used to seal or create a finished edge for the seams. You can get 1-6” tab on one side of the fiberglass, or 2-3” tabs. Double faced tape can be added to seal the tab to next piece of insulation. In retrofit this is usually 3” on each side and 6″ on one side in new construction. In Retro-Fit, It is either tucked up along the side of the fiberglass acting as a trim or used to cover the the purlin or girt. An option is to get a factory pre-applied adhesive on the tab, which the installer peels and sticks to the next blanket. This provides a clean seal to the seams and creates a vapor barrier.