14/06/2021
Post regarding Armaflex Tuffcoat on an 80/60 heating system – internal within a school. Insulated services are exposed within corridors, classrooms, science labs, common rooms, etc.
We would like to hear from anyone that has had past experience of this product being installed internally, and ideally on a heating system. We are really struggling to locate a similar project install, although we have been told by the manufacturer that there are ‘many’, third party distribution networks are providing an obstacle for identification. We are really keen to see the performance, quality and longevity of Tuffcoat in operation outside of our own project.
Our own experience has seen issues with expansion and contraction – even outside of the cycling operation of the school heating system, with adverse effects evident even during the summer when the system is obviously turned off.
Having carried out our own investigations, we identified and advised the consultant, that this is not a Class O system as he specified and intended to select, but in fact it is Class E, and to this end, we have expressed our concerns as to the product suitability internally. Due to our own experiences, we would be grateful for feedback from the industry as follows:
1. Can anyone identify a Class E Tuffcoat system on an internal heating application currently in operation that we could inspect?
2. As an installer, did you have challenges installing the Tuffcoat system on this application?
3. Did you/your client have any issues post-install?
4. If a designer/consultant, have you selected this product on the understanding it was a Class O system, and if so when was that?
5. Is anyone aware of any installations in place where it was believed to be a Class O system?
6. Any other comments/advice?
Since gaining knowledge of the reality of the products fire rating, we have not carried out any further work on the system, however the manufacturer has carried out their own benchmark installation in one corridor, and the results can be seen in the photos attached, showing the product after 4 months of the heating in operation. This is the install as completed by the manufacture as a ‘benchmark’ of what we should expect to achieve. Despite significant quantities of glue being used, it is evident the install is still moving significantly, and laps/tape are visibly lifting. We would be interested to get opinions from other contractors/clients or specifiers who have used this product in an internal application, and have experience that we can utilise to learn more about what we believe to be a very complex application and unusual product specification for a system of this nature.
I look forward to comments below, and welcome any direct messages if preferred.