Degradation agent
Mould & blue-stain
Surface fungal growth favoured by sustained high moisture content, assessed under EN 927-3 weathering.
The diagram below shows every direct connection this node has in the graph. Each line is one edge; expand a neighbour group below to read exactly why that connection exists and which standard or dataset it comes from.
Species (12)
- Norway Spruce← is vulnerable to
WI-SL resistance profile: moisture = 38/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Siberian Larch← resists well
WI-SL resistance profile: moisture = 72/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Western Red Cedar← resists well
WI-SL resistance profile: moisture = 74/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Thermally Modified Ash← resists well
WI-SL resistance profile: moisture = 88/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- European Oak← resists well
WI-SL resistance profile: moisture = 76/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Acetylated Radiata Pine← resists well
WI-SL resistance profile: moisture = 96/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Douglas Fir← moderately resists
WI-SL resistance profile: moisture = 58/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Scots Pine (heartwood)← moderately resists
WI-SL resistance profile: moisture = 48/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Thermally Modified Pine← resists well
WI-SL resistance profile: moisture = 84/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Sweet Chestnut← resists well
WI-SL resistance profile: moisture = 74/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Robinia (Black Locust)← resists well
WI-SL resistance profile: moisture = 82/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
- Iroko (FSC certified)← resists well
WI-SL resistance profile: moisture = 84/100 (ordinal, from EN 350 durability class, extractive chemistry and movement).
Source: WI-SL v1.2.0
Climate zone (4)
- Coastal Scotland← elevates risk of
Coastal Scotland has a humidity load of 86/100, above the 60 threshold used here to flag a dominant degradation driver.
Source: wood.ts:climates[]
- Stockholm, Sweden← elevates risk of
Stockholm, Sweden has a humidity load of 74/100, above the 60 threshold used here to flag a dominant degradation driver.
Source: wood.ts:climates[]
- Singapore← elevates risk of
Singapore has a humidity load of 94/100, above the 60 threshold used here to flag a dominant degradation driver.
Source: wood.ts:climates[]
- Pacific North-West, USA← elevates risk of
Pacific North-West, USA has a humidity load of 82/100, above the 60 threshold used here to flag a dominant degradation driver.
Source: wood.ts:climates[]
Treatment (4)
- Penetrating / semi-transparent coating← mitigates
Minimal-to-thin film coatings (EN 927-1) that erode rather than flake, favouring recoat-without-strip maintenance.
Source: en927-1
- Preservative impregnation← mitigates
Pressure impregnation to a declared penetration class (NP) and retention for the intended use class (EN 351-1).
Source: en351-treat
- Thermal modification← mitigates
Heat treatment that removes decay-feeding sugars, assessed as a performance class under EN 350 clause 4.
Source: en350-perf
- Acetylation← mitigates
Non-biocidal chemical modification of the cell wall, assessed by measured mass-loss and moisture-exclusion performance.
Source: en350-perf
How edges in this graph are derivedWI-GRAPH v1.0.0
Species → agent edges come from the WI-SL resistance profile (0–100 ordinal scale derived from EN 350 durability class, extractive chemistry and movement). ≥70 is read as "resists well", 45–69 as "moderately resists", below 45 as "is vulnerable to".
Climate → agent edges fire when a climate's driver value (UV, humidity, salt or freeze-thaw load) is 60 or above, read directly from the climate dataset.
Treatment → agent / standard edges come from the paraphrased standards corpus used across the site (EN 927-1, EN 351-1, EN 350 clause 4, EN 13501-1).
Species → standard edges reuse the exact source list already published for each Global WoodIntel Score sub-score.
Machine-readable: GET /api/public/v1/graph?node=agent-mould · CC BY 4.0