Here, at Leslie Cornell Building Restoration Ltd, we provide free advice and affordable solutions for anyone experiencing damp walls in their old or historic building in Cornwall and Isles of Scilly. 

Damp General Causes

The most common causes of damp in solid wall construction are:

  • Inefficient guttering, downpipes and/or facia boards
  • Ineffective roofing components
  • Impermeable applications (e.g. cementitious products, Gypsum coatings and synthetic paints)
  • External ground level/s in immediate contact with the wall/s
  • Inappropriate or non-existent external drainage
  • Vegetation and/or climbing plants/shrubs
  • Inefficient/non-existent weather flashing/s

Damp General Causes

Excessive moisture levels within solid wall construction, i.e. cob, stone, brick, are generally caused by an impermeable cladding. Hard, impervious cementitious applications work very effectively on the same or similar backgrounds, however, these applications on substrates such as cob, old stone or brick, straw bale and/or wooden laths will almost certainly fail.

Damp General Causes

There are numerous inappropriate contemporary damp-proofing systems* available and when used on a solid wall construction, issues concerning damp are inevitable.

 *For basements and walls in direct contact with natural geology we would recommend Newton 500 System. For more information on this [reversible] installation click here.

If you have Damp walls in Cornwall and Isles of Scilly and would like to discuss your project, please Contact Us.

For more information about the terminology used within this website, please have a look at our Glossary.

If you have any questions about Historic Building Restoration in Cornwall, please visit our FAQ page.

Damp Walls in Old Buildings Specialist Cornwall & Isles of Scilly / Damp Problems in Solid Wall Construction Cornwall & Isles of Scilly / Damp Limitation Advice Cornwall & Isles of Scilly

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Contact us

Leslie Cornell
Unit 13/14 St Austell Bay Business Park
Par Moor Road
St Austell
PL25 3RF

Tel: 01726 337577