IN ORDER TO SATISFY BUILDING CONTROL YOU WILL REQUIRE PRODUCT 42 (This Product) AND TOP COAT. 

Fire Resistant Paint - this is the primer

If your building inspector requires you to have 1/2 hour fire resistance to a wooden structure then look no further than the Envirograf range of internal and external paints.

To meet BS476 Part 22 and EN European Test EN 1364-1:1999
For 30 or 60 minutes of fire protection to external cladding you will need two coats of the Product 42 HW range - either HW02/E (clear) or HW01 (white) then a top coat of the HW Superb.
A primer is not required if the timber is new, untreated or tanalised. You will require a primer if you are applying to Oak.

Each product covers 8m² per litre