The Fiberglass WMP-VR-R facing has been the most popular metal building insulation choice in recent years, likely due to its public familiarity. There are four popular fiberglass facings: WMP-VR-R, WMP-10, WMP-30, and WMP-50. Each facing has its unique benefits, features, and specifications. This blog post will focus on WMP-VR-R, often referred to with a ‘plus‘ notation.
When it comes to insulating metal buildings, pole barns, or warehouses, most direct their attention towards the insulation material itself, such as the fiberglass thickness, R-value, and installation process. Though these aspects are important, what deserves as much attention is the facing itself. It is the facing that protects and enhances that insulation. I believe the most reliable and cost-effective is WMP-VR-R (Plus).
What is WMP-VR-R Facing?
The Fiberglass WMP-VR-R facing is a vapor barrier-reinforced vinyl covering designed specifically for metal building insulation. Here are some features:
- What is see is the White Polypropylene Film. This film provides a clean, attractive, and bright appearance. Since this film showcases the interior of the building, appearance is a crucial selling point.
- The key feature of the facing is the Scrim Reinforcement. It adds tear resistance and durability to the insulation.
- The vapor retard feature is the metalized polyester. It is located on the back side, which faces outward.
Most people are unaware of what the “Plus” refers to: it is a heavier tri-directional fiberglass scrim and improved lamination strength, offering greater longevity in demanding environments.
Five Benefits of WMP-VR-R Facing
1. Vapor Barrier
The primary reason for adding an insulation facing is to control moisture. With this in mind, WMP-VR-R serves as an ideal vapor retarder. In metal buildings or pole barns, condensation can be a significant issue, leading to mold, corrosion, and structural damage over time. The WMP-VR-R (plus) has a perm rating of 0.02 or lower; in other words, it effectively blocks moisture movement into the insulation and the building structure.
2. Durability
Metal Building Insulation is often exposed in shops, warehouses, agricultural structures, and industrial buildings. For this reason, an insulation with a higher tear and puncture resistance is a must. The last thing you want is a tear, wherein you will lose some thermal efficiency. Again, the “Plus” refers to a heavier tri-directional scrim.
3. Appearance
The interior look of your building is important. You will be looking at it every time you enter the structure. The bright white polypropylene finish not only makes interiors look cleaner and more professional but also helps reflect light, which can reduce the need for artificial lighting.
4. Easy Installation
Of the four facings noted at the top of the blog, the WMP-VR-R (plus) is the easiest metal building or pole barn insulation to install. Installers have noted that it is flexible, pliable, handles well, and doesn’t easily wrinkle. The reinforced scrim also means it won’t easily split at the seams, making it a time-saver during large projects.
5. Cost-Effective
Although some suppliers may charge a little more for WMP-VR (plus) than WMP-10, it pays for itself in reduced damage, lower maintenance, and extended insulation life. Most suppliers charge more for WMP-30 and WMP-50, though the perm ratings are not better. Here is a Fiberglass Insulation Wholesale Calculator to assisting in comparing pricing:
WMP-VR-R
Normal Strength
Our WMP-VR-R (plus) Tensile Strength (MD / XD) 35 lb/in / 35 lb/in
Perm Rating 0.09
The fire rating is Class A-1.
The thinner vinyl layer means it is easier to roll, cut, and install. WMP-VR-R is also the least expensive of the four.
Choose WMP-VR-R when you want the most economical option. The facing will handle normal wear and tear similar to WMP-10 and WMP-30. similar
WMP-10
Superior Strength
The WMP-10 Tensile Strength (MD / XD) 40 lb/in / 35 lb/in
Perm Rating 0.2
The fire rating is Class A-1.
The metalized polyester back allows it to reflect radiant heat away from the structure
WMP-30
Industrial Strength
The WMP-30 reinforced vinyl fiberglass insulation is the ideal insulation for high-humidity areas, with a perm rating of 0.2. It has superior moisture resistance, improved thermal performance, and greater durability, thanks to its superior puncture and tear resistance, as well as its tri-directional scrim, compared to the WMP-10.
WMP-50
Premium Strength
The WMP-50 reinforced vinyl fiberglass insulation provides even greater moisture resistance, superior thermal performance, and enhanced durability compared to the WMP-VR-R, WMP-10, and WMP-30. It is an ideal choice for high-abuse areas and exposed applications needing extra durability. It is FSO’s #2 insulation seller.
Why Spend Hard-Earned Money On Fiberglass WMP-VR-R Facing
Your building was an investment; it needs to be protected. It’s as simple as that. You will undoubtedly be putting valuable items within it from time to time. If you don’t shield your structure from condensation, the enclosed items are at risk. There must be a realization that selecting WMP-VR-R (Plus) facing isn’t just about protecting your fiberglass insulation—it’s about protecting your entire investment, which includes the building and its contents.
Your structure needs a vapor barrier. Your insulation needs protective reinforcements to prevent it from tearing or puncturing. And you need peace of mind and comfort.
