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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.

In plain terms

2 studies are indexed, but only 0 have been classified for or against — too few to state a consensus, so no share is calculated yet.

This sentence is generated from the same numbers shown below — consensus share, confidence band and the number of indexed studies. Open any section to see exactly how it was reached.

Version 8 · WI-EV v1.2.0 · last swept 2026-10-14

Evidence Score

Insufficient evidence

2 relevant studies, 0 directional (3 needed).

Confidence

Low confidence

Too few, too old or too conflicting sources to specify from.

Consensus

Not yet calculated

0 support · 0 contradict · 2 relevant – no direction · 0 directional

Studies

2

2010–2024

Insufficient evidence: 0 relevant directional studies (3 needed for a score).

Behind the answer

All of the data, one click away.

Nothing here is hidden — it is folded, so the answer stays readable. Open any section to see exactly how the numbers were produced.

How the score is built6 weighted components, —/100 total
Volume of evidence

0 directional studies, weighted by grade.

0/30
Study quality

Mean evidence grade 29/100 across the pool.

7/25
Agreement

Not scored: only 0 directional studies (3 needed).

0/20
Peer review

50% published in peer-reviewed venues.

5/10
Recency

Median publication year 2024.

10/10
Reproducibility

100% resolvable by DOI and independently checkable.

5/5
Where the literature disagreesNo direct contradictions in the indexed pool

No direct contradictions in the indexed pool. That is not the same as agreement — it can also mean too few directional studies have been published to disagree yet.

How the consensus moved over timeConsensus recomputed using only the evidence published up to each year
YearPublishedCumulativeSupportContradictConsensus
201011000%
202412000%
Revision history7 published revisions
  1. v8WI-EV v1.2.0 relevance fix: 22 of 24 previously counted studies removed as not relevant (reasons kept in the public audit log); 2 relevant studies remain, 0 directional. Evidence Score withheld: insufficient evidence.2026-10-12 · score insufficient · 0%
  2. v71 new study indexed, Evidence Score +1 to 23.2026-09-24 · score 23 · 0%
  3. v62 new studies indexed, Evidence Score +1 to 22.2026-09-23 · score 22 · 0%
  4. v51 new study indexed, Evidence Score +2 to 21.2026-08-24 · score 21 · 0%
  5. v46 new studies indexed, Evidence Score +3 to 19.2026-08-15 · score 19 · 0%
  6. v3Evidence Score -20 to 16.2026-08-08 · score 16 · 0%
  7. v214 new studies indexed, Evidence Score +36 to 36.2026-08-08 · score 36 · 0%
Every indexed record2 studies with stance, grade and citation count

Maintenance procedures and definition of limit states for exterior wood coatings

Gerhard Grüll, Michael Truskaller, Laurence Podgorski et al. · 2010 · European Journal of Wood and Wood Products · doi:10.1007/s00107-010-0469-z

Full text: The study found both coating-system durability differences and benefits from maintenance, but did not compare which had the greater effect on cladding service life; long-term performance was outside its scope. — “Applying the maintenance coatings was beneficial to prolong a coating’s service life and to repair the observed deficiencies from imperfect coating application.”

Relevant – no direction

Judged from full text

Grade C · 0 citations

Peer-reviewed

Excluded as not relevant22 studies removed from the pool and every score component. Kept here for audit with the reason.

Measures for the maintenance of untreated wood facades

The study evaluates cleaning of untreated facades, not maintenance of film-forming coatings or initial coating selection.

Classifier · WI-EV v1.2.0 · 2026-10-12
doi:10.24451/ARBOR.9469

Quantitative analysis of commercial coating penetration into Fagus crenata wood using X-ray microtomography

The work measures coating penetration into beech rather than maintenance effects on exterior cladding service life.

Classifier · WI-EV v1.2.0 · 2026-10-12
doi:10.1038/S41598-024-64892-X

Imperfect Preventive Maintenance Strategy for a Wind Turbine Gearbox with Dual Lubricating Oil Reservoir Integrating Environmental Impact and Sustainability

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.3390/su18147390

Bioinspired living coating system for wood protection

The thesis investigates a bioinspired living wood-protection system, not regular maintenance of film-forming exterior cladding coatings.

Classifier · WI-EV v1.2.0 · 2026-10-12
doi:10.5281/zenodo.19133477

Evaluating the Condition of Exterior Wood at Feel Viana Hotel in its Initial Years of Operation for Sustainable Maintenance Planning

The study develops damage-inspection methods for hotel wood rather than testing film-forming coating maintenance or cladding service life.

Classifier · WI-EV v1.2.0 · 2026-10-12

Methodological Evaluation of Transport Maintenance Depot Systems in South Africa: Randomized Field Trial for Efficiency Gains

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5281/zenodo.18812024

Corrosion initiation and its effect on bond characteristics and service life of reinforced concrete systems with Cement-Polymer-Composite coated steel rebars

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.1016/j.istruc.2022.08.003

Methodological Evaluation of Transport Maintenance Depot Systems in Rwanda: A Randomized Field Trial

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5281/zenodo.19062855

Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/c2014-4088

Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/c2018-10673

Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/c2016-07422

Shop, Field, and Maintenance Coating of Metals

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/sspc-pa_1-2024

Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/c2022-17616

Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/c2024-20960

Coating Service Life and Maintenance Cost

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/c1986-86027

Expected Service Life and Cost Considerations for Maintenance and New Construction Protective Coating Work

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/c2008-08279

Recoating and coating rehabilitation extend the service life of petroleum pipelines

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/mp2010_49_5-20

Shop, Field, and Maintenance Coating of Metals

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/sspc-pa_1-2016

The impact of sustainability on fire safety

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.26686/wgtn.17004871

Guide to Maintenance Coating of Steel Structures in Atmospheric Service

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/sspc-pa_guide_5-2004

Guide to Maintenance Coating of Steel Structures in Atmospheric Service

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/sspc-pa_guide_5-2018

Guide to Maintenance Coating of Steel Structures in Atmospheric Service

No wood-domain term (wood, timber, lumber, softwood, hardwood, cladding or a species name) in title or abstract.

Wood-domain rule · WI-EV v1.2.0 · 2026-10-12
doi:10.5006/sspc-pa_guide_5-2022

Stance classification is automated and reviewed against each record's own abstract; it is a reading of the literature, not a measurement. The Evidence Score is a rule-based function of indexed metadata under method WI-EV v1.2.0 and does not constitute proof of the statement.

Cite this claim

Citable, versioned, machine-readable.

Each claim keeps a permanent URL and a version number. Cite the version you read — earlier conclusions stay visible in the revision history above.

APA
WoodIntel. (2026). Regular maintenance of a film-forming coating extends the service life of exterior timber cladding more than the initial coating choice does. (Evidence Engine WI-EV v1.2.0, claim version 8). Retrieved 2026-10-14, from https://woodintel.io/evidence/coating-maintenance-interval-extends-life
BibTeX
@misc{woodintel_coating_maintenance_interval_extends_life_2026,
  title  = {Regular maintenance of a film-forming coating extends the service life of exterior timber cladding more than the initial coating choice does.},
  author = {{WoodIntel}},
  year   = {2026},
  note   = {Evidence Engine WI-EV v1.2.0, claim version 8, accessed 2026-10-14},
  url    = {https://woodintel.io/evidence/coating-maintenance-interval-extends-life}
}
Open API
curl https://woodintel.io/api/public/v1/evidence?claim=coating-maintenance-interval-extends-life

Returns the score, the indexed studies with stance and grade, the contradictions, the timeline and the full revision history. Open under CC BY 4.0 — API documentation.