02/11/2026
Use Smoke Pellets to Find the Draught Fault First
A flue that won't draw properly can waste a whole sweep if the cause is a leak or a blockage you haven't located.
Light a smoke pellet at the base and watch where the smoke goes. It shows leakage, blockage and airflow in a way you can see, without guessing.
Choose the pellet to suit the job. The 5g encapsulated pellet gives 15m³ over 30 seconds, while the 8g gives 24m³ over 60 seconds, which leaves more time to trace the smoke. Encapsulated pellets have a finger-grip base and are easy to light.
On a grey day, white smoke can be hard to see. Red is available for better visibility.
Which size do you reach for most often on flue testing? We can advise on the right pellet for your work.
https://www.rps-snaplok.co.uk