Hi, I have already stained my cladding with decking oil. What product can I put on this to make it fire retardant? Also, does the interior of the build also require to be treated to make this up to standard? It's a 12m² summer house made from timber, mdf, chipboard and timber cladding. Thank you.
Unfortunately we do not have a fire protection option we can recommend for application to oiled timber.
We would recommend consulting building control to ascertain which elements of the structure they wish to be protected and to what level.