UNSCRUPULOUS businesses are targeting residents, offering dry verge systems and minor roof repairs, warn Cornwall trading standards officers.

Dry verges are plastic coverings that are applied to the edges of the roof. When fitted incorrectly, they offer little extra protection and are easily damaged by high winds, say officers.

The companies claim to be from Cornwall or the surrounding areas but are known to have travelled from outside the county.

Leanne McLean said: ‘These traders are after quick cash for shoddy work. They deliberately call at homes where they believe elderly residents reside and will exaggerate the problem, often claiming that it needs doing immediately to avoid further damage.

‘They will often be very polite and charming at first, but then increase the pressure and urgency to agree a contract.

‘We know that they have on several occasions started work without the consent of the homeowners, leaving them feeling afraid and compelled to pay.

‘Our message is clear: do not agree to work as a result of a cold call at your door.’