Condensation - Berkshire Timber Preserve


What is condensation? Simply, condensation is the moisture caused by everyday living and occurs when warm moist air comes into contact with cooler air, or a cold surface, which is at a lower temperature. It is by far the most common form of damp in our properties today.

However, it is when moisture vapour from condensation is allowed to build up over a period of time within your property that you begin to see examples of damage caused to walls, fabrics, floors and ceilings from condensation. Along with the unsightly black mould typically associated with condensation, the smell of damp will also be present making a property a very unhealthy place to live in.

Thankfully, condensation is typically a winter problem however, with a growing demand for better insulation and new forms of double glazing, it has become an ever growing pest in our properties.


Damproofing a property is to create a barrier which protects the structure from absorbing moisture from the ground.

This can be achieved by the injection of a chemical damp proof course. Other solutions may be the installation of a structural waterproofing system. Timber Preserve will survey your property and advise on the most effective treatment.

If you come across the following your property may be suffering from rising damp:

  • Rotting skirting boards
  • Mould on ground floor lower walls
  • Flaking paint
  • Cracked plasters
  • Salt contamination
  • Musty smell
  • Condensation – black mould

If no treatment is applied, the porosity of the walls allows them to act as a “sponge”. The walls absorb moisture from the ground through the capillary formation of the wall. This moisture rises and eventually shows through on inside ground floor walls. Evidence of rising damp is usually no higher than 1.5meters as it evaporates at a higher level.

If the rising damp is not treated, it can lead to other problems:

  • Dry Rot
  • Increased condensation. Unhealthy mould growth. Deterioration of the structure of the property

How it works

Each wall is drilled at regular, level intervals and the damproofing chemical is injected under pressure. This soaks into the capillaries of the wall that absorbed the moisture initially, and forms a lining which causes it to reverse its meniscus. Under normal atmospheric air pressure water cannot rise. The use of a diffusion cream works in the same way. A chemical can also be applied without the necessity of pressure injection. The wall is drilled at regular, level internals and the chemical is applied via a series of wicks inserted in the wall. This soaks into the capillaries without adding extra moisture to the wall. Timber perceive will recommend the most suitable system for your property, whether you want to maintain your property or carry out a basement conversion. Although we assess each property individually, and avoid as much disruption and inconvenience as possible, some general principles apply when damproofing work is carried out:

Floor coverings, carpets and furniture must be removed from the areas to be treated. Wall plasters are likely to be hacked off, causing dust. The use of power tools will cause noise and increase the dust problem. Re-plastering work will result in increased condensation. Re-decoration with emulsion paint cannot be carried out for at least 4 weeks. Re-decoration with wallpaper cannot be carried out for at least 6 months.

Get in touch to find out how we can help you.