Glulam (Beams + Columns)
Laminated timber beams and columns forming a renewable, visually warm structural system with long-span capability. Typical uses: frames, long-span roofs, columns, portal structures.
Carbon and evidence
Product Evidence
Generic material record — no manufacturer product attached.
Evidence Base
Category estimateNo product evidence is attached to this generic material, so nothing on this card is numerical. The guidance below is qualitative — an AI-assisted category profile — for early design discussion, not for figures.
Next step: request a current product EPD or manufacturer carbon declaration, or swap in a branded product that holds one.
What's missing (3)
- •No current product EPD is recorded.
- •No quantified carbon result is recorded.
- •No product-specific circularity or material-health claims are recorded.
Service Life — the B4 Replacement Input
60 years · basis not recorded
≈1 installation over a 60-year building study period.
Design & Specification Notes
Laminated timber beams and columns forming a renewable, visually warm structural system with long-span capability.
Typical Uses
- •Primary frame
- •Long-span elements
- •Load-bearing supports
Key Performance
High load-bearing capacity for primary frame.
Specification Actions
- •Provide FSC or PEFC chain-of-custody proof (and origin details if reclaimed).
- •Verify adhesive type and formaldehyde emissions
- •Verify fire treatment is non-toxic and doesn't impair recyclability
Indicative Health & Indoor Air
- •formaldehyde
Natural material with good indoor air quality. Verify adhesive emissions class (E1 or better) for enclosed spaces.
Category baseline
No baseline established
No published figure for this category meets the declared unit, lifecycle modules and standard needed to sit alongside product declarations.
Searched and rejected. Published glulam figures disagree by roughly 46% (117.6 vs 172.18 kgCO2e/m³ A1–A3), and the lower one is itself derived from a per-kg factor via an assumed 420 kg/m³ softwood density rather than published per m³. CLT figures found were A1–A5 and net negative, mixing biogenic carbon into the scope. A baseline here needs a source that publishes per m³ at A1–A3 on a stated biogenic convention; none was found. All five products in this category declare per m³, so the unit is not the obstacle — the absence of a comparable published figure is.
Products in this category
5 products from 4 manufacturers. Ordered by the evidence each record holds, never by commercial standing.
Specification
- Finish
- Glulam timber beams and posts
- Service life
- 60 years