How could this have happened to my log burner?
How could this have happened to my log burner?
Author
Discussion

Mick Dastardly

Original Poster:

278 posts

40 months

Saturday 11th January
quotequote all

Just gone to light it and noticed a bit of the grill had broken off and fallen through, but how could this possibly happen with cast iron?

Any ideas, PH hive mind?


markiii

4,053 posts

210 months

Saturday 11th January
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it gets hot, it cools

all metal has a fatigue point, guess that bit reached it

Desiderata

2,738 posts

70 months

Saturday 11th January
quotequote all
What are you burning? Coal or logs?
If burning wood, you should allow a layer of ash to build up on the grate and don't clear it daily. The wood burns more efficiently and cleanly when fed with oxygen from above rather than up through the grate.

Easternlight

3,658 posts

160 months

Saturday 11th January
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Cast iron. Strong but very brittle.

Gtom

1,740 posts

148 months

Saturday 11th January
quotequote all
Cheap Chinese metal.

It doesn’t matter if the grate is from the manufacturer, a decent uk supplier or the cheapest place on the net, chances are it will be coming out of the same factory.

My parents house had an open fire, as a kid I can remember my dad swapping the grate maybe every 3 or 4 years, if not longer. Before the fire was removed late last year a grate wouldn’t even last 12 months.

On a different note, have you tried the top down method for lighting your fire? Much, much better!

romft123

1,393 posts

20 months

Saturday 11th January
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I have replaced both side plates and the top plate on mine after 8 years of usage......Why do you have a grate in your fire??

Mick Dastardly

Original Poster:

278 posts

40 months

Saturday 11th January
quotequote all
Desiderata said:
What are you burning? Coal or logs?
If burning wood, you should allow a layer of ash to build up on the grate and don't clear it daily. The wood burns more efficiently and cleanly when fed with oxygen from above rather than up through the grate.
Cheers, I didn’t know that. I’m burning ash logs, but I’ll take the tip about leaving ash on the grate in future.

romft123

1,393 posts

20 months

Saturday 11th January
quotequote all
Mick Dastardly said:
Desiderata said:
What are you burning? Coal or logs?
If burning wood, you should allow a layer of ash to build up on the grate and don't clear it daily. The wood burns more efficiently and cleanly when fed with oxygen from above rather than up through the grate.
Cheers, I didn’t know that. I’m burning ash logs, but I’ll take the tip about leaving ash on the grate in future.
NO GRATE. Burn directly onto the bottom of the burner

Chumley.mouse

722 posts

53 months

Saturday 11th January
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romft123 said:
I have replaced both side plates and the top plate on mine after 8 years of usage......Why do you have a grate in your fire??
Looks like a multi fuel with a grate and ash pan.

Lonoxe

199 posts

48 months

Saturday 11th January
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I recall being told a while ago that if the ash pan isn’t emptied when full such that the ash is in contact with the grate, then the ash can generate lots of heat onto the grate above. Apparently the grate deteriorates and fractures quicker when it gets heat from the ash tray below it as well as the fuel on top of it

Getragdogleg

9,443 posts

199 months

Saturday 11th January
quotequote all
I leave a bed of ash and keep the ash pan empty on the advice of the wood burning stove installer.

Hereward

4,659 posts

246 months

Saturday 11th January
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Who is the stove manufacturer, please?

romft123

1,393 posts

20 months

Saturday 11th January
quotequote all
Getragdogleg said:
I leave a bed of ash and keep the ash pan empty on the advice of the wood burning stove installer.
No ash pan, no grate

Getragdogleg

9,443 posts

199 months

Saturday 11th January
quotequote all
romft123 said:
No ash pan, no grate
Mine is a Morso with a grate and ash pan, so Im kind of stuck with that but its 10 years old, looks brand new and I have not had any hassle with it. the guy who fitted it came last year to sweep the chimney and said it was almost totally clean so keep doing what I m doing !

I only burn dry wood.

Marcellus

7,191 posts

235 months

Saturday 1st February
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No matter how thick your grates are eventually they'll burn through.

Mine are c40mm thick when new



But 18months later;


But that is from burning MDF dust in a 350Kw/1.2m Btu burner for 10 hours a day.

Even so, there's nothing to be done to stop it other than replace when they break, same as domestic burners.

Edited by Marcellus on Saturday 1st February 17:51