The Wallpaper Company: Elevating Wallcoverings to New Heights

1. The Chemistry of Compliance: ASTM E84 Class A

When an architect specifies a wallcovering for a public corridor, "vibe" isn't the primary concern—life safety is. Fire ratings are the silent gatekeepers of commercial design.

In our lab testing, we focus on two critical metrics of the ASTM E84 (Steiner Tunnel Test):

• Flame Spread Index (FSI): A measure of how quickly a fire moves across the surface.

• Smoke Developed Index (SDI): A measure of the visibility and toxicity of smoke produced.

  
  

By ensuring our materials stay within the 0–25 FSI and 0–450 SDI ranges, we provide designers with the "Technical Permission" to be creative in spaces where safety codes are non-negotiable.

2. The Architecture of the Backing: Osnaburg vs. Non-Woven

A common mistake in the showroom is ignoring what’s on the back of the sample. In the lab, we determine the "structural integrity" of the wallcovering based on the backing material.

The Osnaburg Anchor

For high-impact areas like hotel corridors and lift lobbies, we engineer our Type II Vinyl with an Osnaburg (woven) backing. This provides the high tear strength necessary to withstand luggage bumps and heavy cleaning equipment.

The Non-Woven Precision

For luxury suites where "monolithic" looks are required, we utilize Non-Woven backings. This substrate offers zero dimensional movement—meaning the paper won't expand when wet with adhesive or shrink as it dries. The result? Seams that are virtually invisible to the naked eye.

3. The Science of the "Fifth Wall"

As discussed in our previous post on The Fifth Wall Revolution, installing material overhead introduces unique gravitational and environmental stresses.

In the lab, we test Adhesive Shear Strength and Veneer Flexibility. This ensures that our Hidra Wood Veneers can wrap a curved ceiling without cracking or delaminating—delivering the warmth of organic millwork without the weight of traditional timber.

4. Substrate pH: The Silent Killer of Perfect Seams

Even the best lab-tested wallcovering can fail if the wall itself is chemically unstable. We advise all our partners on the importance of pH Testing.

If a new concrete wall or fresh plaster has a pH higher than 9.0, it can chemically break down the adhesive, leading to bubbling and peeling. By educating our clients on pH-balanced primers and Level 5 finishes, we ensure that the "Showroom Look" lasts for the entire life cycle of the building.

5. Technical Summary for Specifiers for High-Performance Aesthetics

Variable

The Lab Standard

The Showroom Result

The Bottom Line

When partnering with The Wallpaper Company, clients aren't just buying a pattern. They are specifying a high-performance aesthetics layer that has been vetted through rigorous technical protocols. We take care of the science in the lab, so clients can focus on the soul of the design in the showroom.

Ready to see the data? Download our Technical Specification Guide or visit our Showrooms for a technical consultation.