I am looking for a specification for 1/2 hour fire protection to a structural galvanised steel bay pole. The poles would be prepped using T Wash etching, so I am looking for the product references for the relevant primer and intumescent paint. The poles are not visible and therefore do not require any specific colour matching.
We are assuming the sections in question are lightweight galvanised cold rolled sections. Intumescent would not be suitable for this because:
- The steel thicknesses are usually very low giving the section a very high section factor.
- They are strain hardened because of cold rolling which pushes the steel to its yield point to extract the extra strength in steel beyond its elastic range. The yellow book also describes that the limiting temperature for cold rolled steel sections will be lower than that of carbon steel sections.
If this is not the case, please contact our Technical Team to discuss your requirement further on 0113 2455450 (option 2) or email [email protected]