Why Radiators Damage Antique Furniture

Radiators create a hot, dry microclimate that can shrink wood, open joints, curl veneer and embrittle leather, paint and upholstery.

Why the material is vulnerable

Damage comes from temperature and humidity gradients across the object, not heat alone. A cabinet’s back may remain cool while its front dries rapidly.

What to inspect

• Measure distance and surface temperature.
• Look for new veneer lifting and splits.
• Check joints and door fit seasonally.
• Inspect leather and painted surfaces.
• Consider pipes hidden behind furniture.

Photograph condition and identify every material before cleaning. Check hidden and protected areas; damage often begins at edges, fixings and interfaces between unlike materials.

Safe care

Increase distance, use gentle room-wide heating and monitor humidity. A heat shield may help only if safe, ventilated and not trapping moisture.

Start with environmental correction and the least interventive method. Use clean barriers, soft tools and controlled suction only where the surface is stable. Stop if colour, flakes, fibres or corrosion products move.

Avoid

• Placing furniture directly above a radiator.
• Using water bowls as unmonitored fixes.
• Moving a dried object suddenly into damp cold.
• Tightening warped doors immediately.
• Waxing over active splits.

Monitoring and specialist help

Record seasonal change and reposition vulnerable objects before damage accelerates.

Seek a conservator for active flaking, mould, structural failure, rare materials, protected wildlife products or uncertain earlier treatments.

Sources

Follow the [Canadian Conservation Institute](https://www.canada.ca/en/conservation-institute.html), [National Park Service conservation guidance](https://www.nps.gov/museum/publications/conserveogram/cons_toc.html) and object research in the [V&A furniture collection](https://www.vam.ac.uk/collections/furniture).