Exposure zones and homes with CWI

Was Your Home Suitable For CWI?

Exposure zones, type of property and state of repair. Was your home unsuitable for CWI?

A brief guide about what to look for first, if you suspect incorrectly installed Cavity Wall Insulation is damaging your house or health.

Here at CRISAS are always happy to help you identify the causes of damp and mould in your home.

Before you contact us, there are a number of key indicators that you can investigate yourselves.

The effects of botched CWI installation can take a number of years before they manifest completely, so it is essential that you try and spot the risks early.Ignoring it can make the issues difficult and expensive to fix.
Some factors may be tricky to recognise, particularly if you bought, rented or inherited your home after the CWI was installed.

Hopefully this short article will point you in the right direction. At the very least we think it will allow you to determine if you should seek professional advice.

1. Exposure Zones and Location

The location of your property and it’s exposure to wind-driven rain is usually the first factor you should consider. The British Standard Rain Index Map divides the UK into 4 distinct exposure zones.

Exposure zones 1 and 2, which are mostly in the Eastern side of Britain, are generally considered suitable CWI . These zones suffer least from wind driven rain.

The scale however, does not take into consideration individual properties. Some may have little surrounding cover or particular walls may be more vulnerable than others.
Zones 3 and 4, which includes the West of Scotland, the North West coast, Wales, Cornwall, Dorset and Somerset and numerous other locations, are considered to be inappropriate areas for the installation of CWI.
Check this map and determine in which zone you are located.

british-standard-rain-index

2. Type of Property

Certain house builds such as precast concrete, timber-framed and steel framed buildings will not accommodate standard CWI.
Combinations of these builds, such as an extension or garage etc added to an existing home may also make a property unsuitable for standard Insulation.

3. Signs of Damp, Mould or Mildew

Any signs of damp, particularly on external walls should be investigated promptly and is a common sign of incorrectly installed or damaged insulation.

4. Increased Fuel Bills

Damp walls or walls with cold spots can often make warmth management particularly difficult. You may find your heating bills are steadily escalating and are certainly costing more than those of your friends and neighbours.

5. Smell

A house will often smell damp way before it shows signs of mould. So rely upon your senses!

6. Respiratory and Skin Complaints

If you notice that you or your family are suffering more  winter colds and flu-like complaints than their friends and peers, this can sometimes be a symptom of the spores that are created by mould.

If you suspect that any of the above affect your home then now is the time for action.

There are a growing number of companies that will be happy to supply you with a free self-assessment form and some friendly advice.

The link below will take you to a free download.

It is easy to follow and will help you to asses the risks for yourself.

Botched CWI Home Check List