cross-laminated timber
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Search complete. 35 mentions across 10 episodes found for "cross-laminated timber".
Oct 6, 2026
Edward CohenHOST
So let's talk about materials.
Edward CohenHOST
Mass timber and cross-laminated timber, also known as CLT, these materials have been popular in Europe for not only homes, but for buildings.
Edward CohenHOST
However, in the US, we've been a little more skeptical, or we haven't updated our codes yet to understand that these materials can be safe as well.
Edward CohenHOST
And now they're finally growing fast as a sustainable building material.
Edward CohenHOST
So how does fire retardancy change the risk calculus for developers choosing mass timber or cross-laminated timber?
Wes BolsenGUEST
timber?I think CitraTech is, becomes a, a critical piece of one of the biggest risks of using mass timber, CLT, glulam, all the different things, even getting into I-joists and how we build and what we do.
Wes BolsenGUEST
I think, uh, CitraTech in- into the manufacturing of that does two things.
Wes BolsenGUEST
One is the fire retardancy, but two, something that you and I haven't talked about yet, is UL Green Guard Gold.
David LeeHOST
They have had a number of very successful projects using this product.
David LeeHOST
So we talked with Tyler all about that, how they came around to this idea, the performance aspects of it, how it compares to CLT and other things, what projects they're using it in, the capacity that they have, where it's going in the future.
David LeeHOST
All that fun stuff.
David LeeHOST
Also, I should say that we actually talked with him off air at the end about more like resilient design and fire resiliency, seismic, wind loads, and all that stuff.
21 MINS LATER
Tyler FreresGUEST
Correct.
Tyler FreresGUEST
Yeah, that's a great way to look at it.
David LeeHOST
Are there any advantages to using CLT over MPP?
Tyler FreresGUEST
You know, I'm a little bit biased about this one.
Antony WoodGUEST
It's in the floors.
Antony WoodGUEST
So if we only replaced the, the, the, the reinforced concrete slabs with CLT, with cross-laminated timber, that's a massive win for the environment 'cause we ... 'Cause that's 80% of the materials in the building, the weight of the building.
Antony WoodGUEST
A- and, and as we talk about weight, you know, the great thing about mass timber is it's much lighter, yeah? So then it has a knock-on impact, pe- positively on foundation.
Antony WoodGUEST
I mean, there's a, there's a project in, in, in Rotterdam in the Netherlands where they've built I think 12 stories of residential in mass timber on top of a shitty 1960s, uh, shopping mall.
Fred SchwassGUEST
Um, so there's different types of, uh, mass timber developments.
Fred SchwassGUEST
You know, there's, there's the full mass timber where you have a glulam frame and CLT slabs, or there is what we call the hybrid structure where we have a steel frame and CLT slabs.
Fred SchwassGUEST
And we've delivered all types of mass timber buildings.
Fred SchwassGUEST
We were actually very early adopters.
Fred SchwassGUEST
So we've certainly delivered quite a lot of it, and, and being the early adopters, um, we were a bit of a guinea pig, I would say.
Fred SchwassGUEST
Some of these buildings, uh, would not be designed the same way today.
Fred SchwassGUEST
Um, and, and the one thing I would say is from the industry in general and, you know, with the insurance markets, we've seen a bit of a move away from full mass timber structures and a bigger focus on the, on the hybrid structure where you have the CLT slabs.
Fred SchwassGUEST
Uh, I think insurers are a lot more comfortable underwriting those types of buildings.
Antonia GoergGUEST
We have it since 2021 in all offers and contracts.
Antonia GoergGUEST
And it says that we're taking back Clulam and CLT after their first life phase.
Patrick HypscherHOST
Not everyone might be familiar with the construction industry.
Patrick HypscherHOST
Just to understand, what's Clulam roughly? Yeah.
Antonia GoergGUEST
And CO3 is cross-laminated timber.
Antonia GoergGUEST
That's floors and walls, all load-bearing for the timber construction.
Markus StepplerGUEST
At the end, we are buying raw lamellas from a sawing mill and gluing them together, either to glue them, which are beams, or to two-dimensional elements from CLT.
Markus StepplerGUEST
And this is also one of the ideas for our future questions in case of circularity.
David GottfriedGUEST
But a lumber is very much part of green building as you stated and in the green building rating systems early on, we got into what is sustainable forestry and how those trees are planted so that you don't just demolish everything and do deforestation and ruin the the soil and the floods and the runoffs and replanting and guidelines uh the fsc guidelines forest stewardship council and those ended up in the lead green building rating system later another one came up sfi and uh it's very important uh for homes and buildings and now it's coming back again with this structural timber clt that's ending up in buildings and firms like google or putting it in their campuses in the Bay Area.
David GottfriedGUEST
And we're now trying to see how strong it is and how tall we can go with laminated timber.
John BrinkHOST
And what you're referring to, David, is CLT, which is cross laminated timber, where you use one layer of timber this way, the other one this way, and then another one this way, usually three, but they can go higher and higher longer, wider.
John BrinkHOST
And so that is a big part of structures today to towers really that can be developed from using natural products, lumber in particular.
John BrinkHOST
FST for its stewardship council.
12 MINS LATER
David GottfriedGUEST
And I keep going deeper and deeper as a green guy.
David GottfriedGUEST
Yeah, we can make homes net zero positive.
David GottfriedGUEST
We can use CLT and new laminates.
Russell HixsonHOST
All right, next up, tariffs meant to hurt Canada could be backfiring.
Russell HixsonHOST
So according to a new analysis from the Canada Mortgage and Housing Corporation, US tariffs on Canadian softwood lumber and transformed wood products, so that could be CLT, engineered wood products, those could inadvertently lower domestic residential construction costs by redirecting timber supplies back into the Canadian housing market.
Russell HixsonHOST
So the study reveals that utilizing surplus domestic timber could reduce ground-oriented housing construction costs by up to 17% in select major markets.
Russell HixsonHOST
So the analysis indicates that retaining more wood products within Canada could spur a 3.5% national increase in annual ground-oriented housing starts.
Ben WareingGUEST
So we're always looking to use as much wood as possible and other low carbon materials.
Ben WareingGUEST
But wood in particular, you know, as I say, we're doing this library project at the moment with CLT and glulam wood structure.
Ben WareingGUEST
We've done quite a few projects of late with engineered wood structures.
Ben WareingGUEST
We've done just recently a primary school engineered wood.
Ben WareingGUEST
So we're always looking to use as much wood as possible and other low carbon materials.
Ben WareingGUEST
But wood in particular, you know, as I say, we're doing this library project at the moment with CLT and glulam wood structure.
Ben WareingGUEST
We've done quite a few projects of late with engineered wood structures.
Ben WareingGUEST
We've done just recently a primary school engineered wood.
Christof WeissenseerGUEST
Sehr mühsam, teilweise auch, [lacht] aber, aber spannend auch.
Christof WeissenseerGUEST
Ähm, und in letzter Zeit, äh, geht's ganz klar die Entwicklungen so in den großvolumigen Wohn- und Bürobau und, äh, da vor allem so ab zweitausendsechszehn, würde ich sagen, so das hybride Bauen, wo unsere Holzbau, äh, Fachleute, äh, sich auch angelernt haben, Betonfertigteile zum Beispiel zu versetzen oder Holzbeton-Verbunddecken oder CLT-Decken, weil ich das einfach in Frage gestellt habe, okay, was ist das für ein Unterschied, ob wir unsere eigenen Riegelwände dann die CLT-Decken, das war noch normal, dass ein Holzbauer versetzt dann eigentlich a Holzbeton-Verbunddecke.
Christof WeissenseerGUEST
Wer soll das versetzen? Soll das der Zimmerer oder der Baumeister versetzen? Und dann letztendlich hat sich eigentlich immer herausgestellt, dass die Qualität, ähm, der Zimmerleute höher ist als von die Maurer.
Christof WeissenseerGUEST
Einfach die Genauigkeit, gell.
Christof WeissenseerGUEST
Und man muss auch hinterfragen, ist das dann nachhaltiger, wenn ich drei Gipsplatten auf a Holzsäule drauf tu oder gleich a Betonsäule, die ich, was ich aber auch wieder demontieren kann.
Christof WeissenseerGUEST
Also unser Ziel quasi ist heute, wir reden von reinen Montagebaustellen, was unter kontrollierten Bedingungen in, äh, Werken produziert werden können.
Christof WeissenseerGUEST
In verschiedene Werke gibt es ein Betonfertigteilwerk, da gibt es ein CLT-Werk von der Holzindustrie, da gibt es ein BSH-Werk und dann gibt es das, was wir eben selber machen, den Rahmenbau.
Christof WeissenseerGUEST
Und wir sind quasi viel mehr schon heute Engineering, äh, äh, Unternehmen, was halt selber die Riegelwände produziert und, und die Montagen macht.