Advice Hub: Damp

Damp can be unsettling for any property owner, particularly when its cause is unclear or opinions conflict. In this section, Collier Stevens explains common property damp issues in a clear, practical way, helping you understand when specialist inspection is required and what steps to take next. 

Our advice combines local knowledge with professional standards expected of a chartered surveyor. Whether you need reassurance, a formal report, or advice from a property surveyor in Kent or London, our guidance reflects the approach we take when assisting clients across London and the South East.

small repairs matter - broken drain pipe - building survey chislehurst

Small home repairs that prevent expensive damage

Regular maintenance of your home is essential. Don't put off cheap DIY jobs or small repairs that can lead to major repairs later on. Make sure to keep the exterior paintwork in good condition, and fix any leaky drainpipes and guttering. Clear blocked gutters, fix dripping taps and overflow pipes, and have an annual boiler service. By taking care of these key maintenance jobs, you can prevent costly repairs and problematic survey reports.
internal damp, rising and penetrating damp

Dry rot vs. wet rot: what is the difference?

As a professional surveying firm, we are frustrated by surveyors who only recommend a "specialist damp report" without identifying the root cause of the issue. These so-called specialists often have their own services to sell, and their reports can be inaccurate and costly. Chartered Building Surveyors are trained to identify the cause of damp and provide effective solutions.
cavity wall

Identifying cavity wall insulation problems

Cavity wall insulation is recommended as a means of improving a building’s thermal efficiency. However, not all cavity walls are suitable for insulation. The problem with this process is that it fills the cavity with a material that can allow water in causing dampness and condensation. The installation of retro fit cavity wall insulation is covered by the Building Regulations and must be carried out and designed by a person in a competent installer scheme.
Raindrops cling to a fogged window, creating a soft focus effect that obscures the view outside.

Condensation dispute calls for expert help

The Collier Stevens team is frequently called upon to advise on condensation issues. They helped a landlord who was having problems with a tenant's complaints about condensation, and mould growth. To obtain a complete picture of the environmental conditions in the flat, the team left a small recording environmental meter on-site for three weeks to record RH and air temperature every five minutes.
defective and broken sash window in need of repair, timber decay

Buying a house with sash windows?

Sash windows are a beautiful addition to older or period homes, but they can be draughty and offer poor thermal performance. If you want to keep them, there are many defects that will reduce their life. If replacement is needed, current building regulations require double glazed units. Homeowners with listed properties should consult with the local authority before making any changes.
water damaged brickwork and pointing

Don’t put off minor building repairs – 79p now or £1,000 then?

Neglecting a small issue like a missing gutter end cap can lead to major problems in a property, as demonstrated by a recent survey. Water dripping down the front elevation due to a missing end cap had caused damage to the soft red bricks, leading to internal penetrating damp and the need for costly repairs. Don't overlook small repairs as they can save you from bigger expenses in the long run.