Mass Timber is Changing Real Estate
What is mass timber?
Mass timber is a broad term that encompasses various types of panelized and engineered wood products including columns, beams, and panels. Designed as an alternative to carbon-intensive building materials like concrete and steel, it has comparable strength and a lighter weight.
Mass timber provides both aesthetic appeal as well as the potential to contribute to the decarbonization of buildings.
What’s driving mass timber adoption?
Progressive building codes
New mass timber products
Innovative building systems
More designers and builders with expertise
Increasingly affordable products and systems
Interest in sustainability-driven building materials and designs
With the wide range of mass timber uses and applications, as well as the increased availability of new building materials on the market, wood is a preferred option for low-carbon, “green” construction.
Types of engineered wood:
Laminated Veneer Lumber (LVL)
Wood veneers are bonded under heat and pressure into large blocks called billets. Applications include beams, trusses, planks, and rafters.
Nail-Laminated Timber (NLT)
Lumber is stacked on edge and fastened with nails or screws. Applications include floors, ceilings, decking, roofing, and elevator shafts.
Dowel-Laminated Timber (DLT)
Similar to NLT, but instead of nails the panels are friction-fit with hardwood dowels. Applications include horizontal spans, flooring, and roofing.
Benefits of mass timber
Reduced carbon footprint.
A 2019 University of Washington study conducted a life cycle analyses of two similar buildings, comparing a hybrid CLT commercial building to a reinforced concrete building. It was found that the hybrid CLT building had a 26.5% reduction in Global Warming Potential.
Why? Because timber acts as a “carbon sink”, preserving carbon that is stored in the wood, preventing its release back into the atmosphere as carbon dioxide.
With sustainable forest management and manufacturing, timber can capture and store carbon for a building’s full lifetime.
Prefabrication allows for quicker construction and minimizes material waste.
Engineered wood can be prefabricated to exact specifications in a factory, as opposed to cutting and assembly on-site.
This not only speeds up the construction process, but also reduces material waste because space for MEP, windows, and doors can be included in the manufacturing process.
Earthquake and fire resilient.
Timber is strong, lightweight, and highly ductile which makes it an attractive material choice in high-seismic regions. When concrete cracks due to seismic events, buildings typically require demolition and reconstruction. In contrast, wood-frame buildings can be designed to avoid damage to the primary structure and are thus more easily repaired.
Engineered wood is also very fire-resistant. In the event of a fire, the outer layers of the timber char at a predictable rate. The char layer acts as protective insulation to slow down combustion and the inside layers can retain their strength. Materials like steel are less predictable under combustion once they reach yielding temperature.
Source: Naturally Wood
Mass timber is aesthetically pleasing
Mass timber also makes for stunning wood interiors. Not only do the biophilic properties of exposed wood make spaces pleasant, building with timber creates an opportunity to use the structural materials as the finishes, reducing the total amount of material needed.
The future of mass timber?
Mass timber is a relatively new material, and research and testing are still in early stages. Timber buildings have become increasingly popular, especially in Canada and Europe over the past few decades, and building codes have responded to allow for more advanced wood structures.
As of 2021, provisions for up to 18 stories of Type IV-A construction have been accepted into the International Building Code (IBC).
Interactive Mass Timber Maps
Explore mass timber projects in the U.S and Canada.