Vanguard Roofing operative sealing a roof ridge with mortar to keep damp out

Damp Proofing in Hampshire, Wiltshire & Berkshire

Expert damp diagnosis and treatment. Rising damp, penetrating damp and condensation solutions with written guarantees.

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Professional Damp Proofing Services

Damp in your home is more than a cosmetic problem. Left untreated, it can cause structural damage, timber decay, mould growth and health issues. Identifying the type and source of damp correctly is essential before any treatment can be effective.

We carry out thorough damp surveys to diagnose the cause accurately, then carry out the appropriate treatment. Whether it is rising damp, penetrating damp from a roofing defect, or condensation, we fix the source of the problem, not just the symptoms.

Damp proofing by Vanguard Roofing Services

Damp Proofing Services

Every damp problem is different. We diagnose the cause accurately and apply the right treatment for lasting results.

Rising Damp Treatment

Chemical damp-proof course injection to stop moisture rising through masonry. Replastering with salt-resistant render to restore affected walls.

Penetrating Damp

Identifying and fixing the external source, whether it is a roofing defect, failed pointing, defective render or blocked drainage. The key is fixing the cause.

Condensation Solutions

Improved ventilation, extraction, insulation and dehumidification to reduce condensation and prevent mould growth in your home.

Damp Surveys

Thorough investigation using moisture meters and visual inspection to correctly identify the type and source of damp before recommending any treatment.

Timber Treatment

Treatment of timbers affected by wet rot or dry rot caused by prolonged damp exposure. Removal of affected sections and preservative treatment.

Waterproofing

External waterproofing of walls, basements and below-ground structures to prevent water ingress. Tanking systems and drainage solutions.

Signs You Have a Damp Problem

Damp presents itself in different ways depending on the type and severity:

Visible Signs

  • Tide marks or staining on walls
  • Peeling wallpaper or blistering paint
  • White salt deposits (efflorescence) on brickwork
  • Mould or black spots on walls or ceilings
  • Musty or damp smell in affected rooms
  • Wet patches after rain on internal walls

Structural Signs

  • Crumbling or soft plaster
  • Skirting boards pulling away or rotting
  • Floorboards feeling soft or spongy
  • Timber lintels or joists showing decay
  • Condensation persistently on windows

Damp problems get worse over time, not better. Book a free damp survey to find out exactly what is causing the problem.

Damp Proofing FAQs

Rising damp typically affects ground-floor walls and leaves a horizontal tide mark up to about one metre high. Penetrating damp comes through walls or roofs and is often worse during wet weather. Condensation is caused by moisture in the air and tends to appear on cold surfaces, particularly in bathrooms and kitchens. A proper damp survey is the only reliable way to diagnose the cause accurately.

Costs vary widely depending on the type of damp, the size of the affected area and the treatment required. A chemical damp-proof course injection for a terraced house may cost a few thousand pounds, while more complex work involving structural repairs will be more. We provide free surveys and written quotes.

A standard chemical damp-proof course injection can usually be completed within a day. Replastering the affected walls afterwards typically takes an additional day or two, and the new plaster will need several weeks to dry out fully before decorating. We will give you a clear timeline before starting.

Not if the cause has been correctly identified and properly treated. This is why accurate diagnosis is so important. Our damp proofing work is backed by written guarantees, and we address the root cause rather than just covering up the symptoms.

Standard home insurance policies do not usually cover damp proofing or rising damp treatment. However, if the damp has been caused by a sudden event such as storm damage or a burst pipe, your insurer may cover the cost of the repair that caused the damp. It is always worth checking your policy.

Painting over damp without treating the cause is never a good idea. The moisture will eventually push through any paint or coating, and the underlying problem will continue to cause damage to your walls, timbers and plaster. Proper treatment of the source is always the right approach.

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