# What Is Conservation in Construction?
**Conservation in construction refers to the preservation and protection of building materials, components, or entire historic structures against decay, deterioration, and damage. The goal is to maintain the original character and structural integrity of a building for as long as possible.**
## Conservation vs. restoration
While the terms are sometimes used interchangeably, they have distinct meanings:
– **Conservation** focuses on maintaining and protecting what already exists, using preventive measures and minimal intervention.
– **Restoration** involves returning a building or element to a previous known state, which may include reconstructing lost features.
Conservation follows the principle of doing as little as possible but as much as necessary.
## Types of conservation work
– **Preventive conservation** — Controlling environmental conditions such as moisture, temperature, and pollution to slow deterioration. Examples include improving drainage, installing ventilation, and applying protective coatings.
– **Remedial conservation** — Stabilizing materials that are actively deteriorating, such as consolidating crumbling stone or treating timber against rot and insects.
– **Material conservation** — Treating specific building materials like natural stone, brick, timber, plaster, or metals to extend their lifespan.
## When conservation is required
– Listed or heritage buildings where original materials must be preserved
– Aging structures showing early signs of material decay
– Buildings in harsh environments exposed to moisture, frost, or pollution
– Timber structures at risk from fungal attack or insect infestation
## Conservation principles
Professional conservation follows internationally recognized guidelines, such as those from ICOMOS (International Council on Monuments and Sites). Key principles include reversibility of treatments, minimal intervention, use of compatible materials, and thorough documentation of all work performed.
## Related terms
– Restoration
– Renovation
– Heritage building
– Monument preservation
– Patina
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