When it comes to dense urban areas, code strictness and local cladding restrictions seem to be growing, not shrinking. So, what do you do when rules get in the way of creativity?
While the knee-jerk reaction might be to play it safe and retreat to uninspiring materials, codes aren’t meant to stifle creativity. They’re designed to ensure performance, and luckily, restriction does not require compromise if the right system-based solutions are chosen.
Typical Reasons for Restrictions
While the International Building Code (IBC) is still the national standard framework of building codes, most jurisdictions adopt a state or local code that incorporates the IBC and modifies it. This is especially true in high-density urban environments and often includes requirements that limit the material palette for schools, as well as high-rise residential, healthcare, and government buildings.
Some examples of high-density areas that incorporate the IBC and additional local codes are:
- New York City:
- Fire safety is the primary driver of the restrictions due to the extreme density.
- NYC Building Code (BC) section BC 718.2.6 governs the use of exterior wall assemblies containing combustible components.
- Chicago:
- Wind and fire safety informs the high-rise building standards.
- Concerns over longevity and wind-driven rain from Lake Michigan create a bias toward “permanent” and noncombustible materials.
- Boston:
- Outdated fire-safety amendments are combined with new energy codes.
- Architects struggle to fit thick insulation and fire-safe cladding into a wall assembly without creating a thermal bridge.
Moisture intrusion is also a concern in urban canyons, where there is a risk of long-term structural degradation that comes with wind-driven rain and limited sunlight to dry everything off.
If the codes are the rules of the game, how do you win? The misconception is that it requires a retreat to heavy masonry or unexpressive metal panels. In reality, there’s no need to compromise on aesthetics.
What StoVentec® Is and Why It Fits These Markets
Sto’s answer to this dilemma is StoVentec, a family of Rainscreen systems that provide a single-source solution that is engineered and tested with these stringent codes in mind. StoVentec systems eliminate the risk of multiple manufacturers with potentially incompatible elements or a “liability gap,” and it’s designed so that every component works in unison.
Here’s how StoVentec fits these dense urban markets and their strict codes:
- Drained-and-back-ventilated rainscreen with noncombustible cladding options
- StoVentro™ sub-construction is thermally broken and adjustable
- AAMA 509 and NFPA 285 compliant
- Compatible with continuous insulation and has full StoGuard® AWRB continuity
- Energy efficient
With performance and technical compliance taken care of, design goals come next.
Design Freedom Without the Tradeoff
Urban building restrictions do not have to be a death sentence to creative expression. Color, texture, or glass are not off limits with the right solutions. Here’s how Sto allows creativity to shine, even within strict codes and performance standards.
- StoVentec Glass:
- Sleek, modern facade with opaque glass-faced panel options
- Allows for high-impact, branded, and signature facade moments
- StoVentec Fiber Cement:
- Prefinished facade panels in a range of colors and textures
- Offers panel-scale flexibility, vertical or horizontal application and concealed or visible fasteners
- StoVentec Render:
- Ability to create traditional surface aesthetics like stone, wood, brick, concrete, and plaster finishes
- Ideal for complex geometries and smooth transitions
- StoVentec Masonry Veneer:
- Rainscreen system with adhered thin brick
- Achieves the look of brick or stone within a lightweight system
All StoVentec systems utilize StoVentro sub-construction, the invisible, yet crucial support structure for rainscreen facades. StoVentro effectively absorbs wind loads and dead loads, is easy to install and adjustable.
Using options like StoCast® resin-cast shapes (simulating wood or brick) alongside high-gloss glass panels can create a rich urban facade where the building can be high-impact at the skyline level and textured at the pedestrian level.
Performance That Matches Urban Conditions
Urban settings are aggressive, with many stressors affecting a facade over time.
Environmental issues like pollution, grime, and biological growth are a daily concern. The self-cleaning properties of some Sto coatings, like StoColor Lotusan or the quick-drying capability of StoColor Dryonic.
The climate can also be a source of harmful conditions for a facade if no precautions are taken. Cycles of freezing and thawing can cause rigid claddings to crack or delaminate. Sto systems are tested to withstand these extreme temperature shifts.
Wind-driven rain creates moisture retention inside a building’s envelope. That’s why systems like StoVentec is crucial in a concrete jungle, where sunlight might be scarce.
Because a building is an investment, Sto coatings and finish options allow for long-term aesthetic retention and the preservation of a design’s intent for the future.
How to Specify in a Restricted Market
Specifying in a restricted market is not always a straightforward process. That’s why planning is key.
Engaging Sto’s technical experts early in the design phase ensures the chosen assembly aligns with the specific jurisdiction and occupancy requirements from day one.
You can also use the Sto Wall Selector to confirm tested assemblies for the substrate and design pressure. This minimizes the risk of late-stage changes or compromises that can affect the end result.
It is difficult to overstate the advantages of coordinating AWRB, insulation, sub-construction, and cladding under one manufacturer. Choosing a single source of system-based solutions simplifies the submittal process and ensures compatibility between every layer of the wall assembly.
While code and performance restrictions may seem tough to meet, they don’t have to be. The right system doesn’t just clear the code; it gives the design something to work with. The goal is to make smart system-based choices early in the game and then let the creativity flow. Sto is there to bridge the gap between the rules you need to follow and the building you want to construct.
Are you in a restricted market? Consult Sto’s experienced team on StoVentec assemblies for your occupancy and code path online, or call us at 800-221-2397.