Evidence Engine · WI-EV v1.0.0
A living evidence synthesis of the wood literature.
Each statement below is tracked continuously against the open scholarly registries. The Evidence Score, the consensus share and the conclusion are recomputed as new work is published, and every change is versioned in public.
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431
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Compare materials and climate scenarios
Modelled service life for every indexed material under a chosen climate, facade orientation and maintenance scenario. Bars show the P10–P90 uncertainty band; hover or focus a row for durability class, spread, maintenance interval and confidence. These are modelled estimates from WI-SL v1.2.0, not measured service life.
14 yr
18 yr
12
Long-lived timber construction products deliver a net biogenic carbon storage benefit over the building service life.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Moderate confidence
- Consensus
- 100%
- Studies
- 39
- Supporting
- 7
- Contradicting
- 0
Thermal modification measurably increases the decay resistance of softwood in above-ground exterior use.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- 100%
- Studies
- 39
- Supporting
- 4
- Contradicting
- 0
Substituting timber for mineral structural materials reduces the cradle-to-gate greenhouse gas emissions of a building.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- 100%
- Studies
- 33
- Supporting
- 6
- Contradicting
- 0
The Scheffer climate index is a reliable predictor of above-ground decay hazard across climate zones.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- 73%
- Studies
- 30
- Supporting
- 2
- Contradicting
- 1
Mass timber assemblies carry a higher built-in moisture risk during construction than they do in service.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 24
- Supporting
- 2
- Contradicting
- 0
Charring rates of cross-laminated timber under standard fire exposure are predictable within the Eurocode 5 design assumptions.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 36
- Supporting
- 0
- Contradicting
- 1
Acetylation reduces the moisture-driven dimensional movement of wood by more than half relative to the untreated species.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 40
- Supporting
- 0
- Contradicting
- 0
Sustained wood moisture content above 25 percent is the controlling condition for fungal decay initiation in above-ground timber.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 21
- Supporting
- 1
- Contradicting
- 0
Silicate-based surface treatments measurably slow the surface weathering of exterior softwood.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 28
- Supporting
- 0
- Contradicting
- 0
Accelerated laboratory weathering tests reliably predict field performance of exterior wood coatings.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 39
- Supporting
- 1
- Contradicting
- 1
Untreated larch cladding reaches a service life comparable to surface-treated softwood in temperate Northern European climates.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 39
- Supporting
- 0
- Contradicting
- 0
Design detailing that keeps water off end grain affects the service life of exterior wood more than moving one EN 350 durability class.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 25
- Supporting
- 0
- Contradicting
- 0
Regular maintenance of a film-forming coating extends the service life of exterior timber cladding more than the initial coating choice does.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 21
- Supporting
- 0
- Contradicting
- 0
Preservative-treated Scots pine sapwood reaches the intended service life in EN 335 use class 3 exposure.
Under review — the register is reading the literature and will publish a conclusion once directional evidence has been indexed.
- Confidence
- Low confidence
- Consensus
- Not yet calculated
- Studies
- 17
- Supporting
- 0
- Contradicting
- 0
Method WI-EV v1.0.0. Scores are computed from indexed metadata — volume, evidence grade, agreement, peer-review share, recency and reproducibility — not from expert opinion. A high score means the literature is consistent and well-graded, not that the statement is proven. Records are retrieved from Crossref, OpenAlex, Semantic Scholar and related open registries.