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Post by kaneabel on Apr 2, 2021 18:15:06 GMT
Hi all,
After using my DIY Pompeii oven for 3 summers, the chimney and front arch have collapsed this February after we had a cold snap in February. The dome is intact. I think it can be repaired but am currently not able to do it myself(plus I doubt my DIY skills). Any recommendations for somebody who is able to repair the oven for me at a reasonable price
Kind regards,
kaneabel
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Post by truckcab79 on Apr 6, 2021 12:55:14 GMT
Hi there. Check out my builds. I would be able to do this for you. Only issue is work schedule. Currently booked out for weeks. Dependent upon how bad it is I might still be able to fit in. Need some pictures though. Feel free to contact via here or my own website. I’m in borehamwood so you should be reasonably local. www.secateur.co.uk |
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Post by kaneabel on Apr 7, 2021 17:52:26 GMT
Thanks. I have attached some pics. As you can see the dome is intact but the arch has collapsed cleanly. I am in Barnet so not far away. Would be great if we can speak on the phone once you take a look.    |
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Post by truckcab79 on Apr 8, 2021 8:06:28 GMT
Oh dear. All fixable though. Would like to see it in person to determine what should be done. As it happens I seem to have loads of clients in Barnet and should be there at some point this weekend in Northumberland Road. I’ll try to private message you to swap numbers and get an address for you and then sort out a time to visit. No obligation or charge for estimates.
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Post by truckcab79 on Apr 9, 2021 5:51:52 GMT
I’ve messaged you my number but WhatsApp me via my website if you haven’t received for any reason. www.secateur.co.uk |
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Post by downunderdave on Apr 9, 2021 7:00:08 GMT
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Post by truckcab79 on May 27, 2021 10:06:45 GMT
Pleased to say that I’ve just finished working for kaneabel on this. Integrity of the main oven was no issue. Very nicely built and apparently performing well up until the collapse. In between dodging rain showers we have: Taken out the damp calcil under the landing stage Poured a new concrete landing stage base Cleaned up all the old firebricks for re-use Relaid the landing stage entrance Rebuilt the inner arch. Cleared all the old loose mortar from the dome. Stabilised the remainder and given it two thick coats of render with lots of fibreglass fibres added to help guard against further cracking. Built a new outer arch Supplied and fitted a larger 6” flue and rain cap Weather aside a really enjoyable project and very pleased with the final finish. Kaneabel posted his own ‘Before’ pictures earlier which actually make it look worse than it was so here’s my own. ‘As Found’ and ‘As Left’ Just needs a coat of masonry paint or preferably KRend when it’s all fully cured and it’s good for many more years. Edit - Pictures not showing on mine. Will try later unless they suddenly appear Now they’re showing in the wrong order. Hopefully you can work out which is which. 😂 www.secateur.co.uk            |
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Post by downunderdave on May 28, 2021 10:19:51 GMT
Water getting into the insulation under the floor is a common problem with wood fired ovens, particularly those out in the weather. Most insulation materials love to suck up water, some more than others. Some water resistant calcium silicate insulation board or foam glass are two good choices that either don't or minimally absorb water. A roof or enclosure is a good solution but involves more labour and cost. Most ovens are of the igloo style and common water entry sites are around the flue pipe, where the expanding metal pipe can cause cracks in the outer shell, corrosion if it's not stainless and a little gap that rain can enter from water running down the outside of the pipe. A good solution is to make the gap a little wider in the initial build and fill it with high temperature silicone which remains flexible at the same time as preserving the seal.
Another common point of water entry is around the base of the outer dome shell where it meets the supporting slab. Often a crack will develop here and water running off the dome and on to the flat supporting slab will enter through this crack. This area should be inspected occasionally and sealed up even if it's tiny as the insulation loves to suck up water. If the supporting slab can be made to slope away from the outer dome shel so much the better as the water running off the dome will be discouraged to pool in that area.
As water wants to find its way to the bottom the underfloor insulation is likely to be the wettest should water get in. It will be removed by heat but can take months of fires. In order to allow the water vapour to escape more quickly a few holes either cast into the supporting slab on construction or drilled through from underneath if already built, will help enormously in drying. The water will travel in the opposite direction of the fire and any steam pressure will actually assist in pushing it out these holes.
I hope this might help new builders or those undertaking repairs.
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fox
valid member
Posts: 63 
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Post by fox on May 28, 2021 11:15:35 GMT
Certainly looks better than it did !
Is there actually any insulation on the dome?
Three coats of weather shield will stop a lot of damp penetrating the new cement. (If the outside of the dome does not get to hot)
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Post by truckcab79 on May 28, 2021 19:37:19 GMT
Yep. Not sure of the thickness but where the render had completely come away it was clear that there was a good layer of ceramic blanket under there and calcil under the base.
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Post by oblertone on May 29, 2021 6:59:40 GMT
Good recovery and very neat work 👍🏾
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