The latest reports came on Thursday, November 5, in the Scottish Borders area.
Three men called at properties in Kingsland Road, Selkirk, and Abbotslea in Tweedbank. They were able to inspect the roofs for defects on some properties after gaining the trust of homeowners.
Afterwards they stated that they had found either loose tiles or produced a piece of rotten/damp wood. On some occasions they have managed to access the roof space via the attic before arranging an appointment to come back on the following day.
The men, however, were unable to produce suitable identification and no money was exchanged.
Police believe the same men have been operating in the area for months and are targeting older residents.
An investigation is now underway and anyone who has information that can help identify the unsolicited callers is asked to come forward.
The first male is described as in his late 20s, around 5ft 4ins tall, heavy build with short mousy blonde hair that has a natural wave.
The second suspect is in his 30s, taller than the first male, has a slim build with messy mousy brown hair and bad teeth. He was also wearing a blue rain jacket at the time of this incident.
The final male is in his late 20s, between 5ft 5ins tall and 5ft 7ins tall, dark hair and wore a bright blue bubble jacket and a tight woollen black hat with white band.
The men are travelling in a white-coloured Transit Van and a white-coloured Citroen Berlingo with ladders on the roof.
Detective Constable Elizabeth Miller of Police Scotland said: “Fortunately, the homeowners did the right thing and refused to hand over any money. Instead, they contacted the police and we are now pursuing various lines of inquiry in order to trace these men.
“From the descriptions given and the similarities in their action, there is a strong chance that these men may be responsible for at least one other report related to bogus workmen in the area.”
“Anyone with information that can help us identify them is asked to come forward immediately.”
Information can be passed to officers through the non-emergency 101 number or alternatively, the charity Crimestoppers on 0800 555 111.