Sealing firing place

[jayc89]

It's pretty windy here today. Just lit a fire in our wood burner and noticed a pretty nasty draught coming from above the closure plate. It looks to be coming from where the plate meets the brickwork, rather than around the flue. 

 

What's best to seal this with, fire cement?

 

 

[Dave Jones]

i foamed our register plate all around the edge prior to screwing it onto the angle iron. cemented/fire rope the stove pipe where it goes through the register plate. One of those jobs have to do each year as the cement does tend to crack/flake due to the hot/cold cycle.