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Post by bookemdanno on Nov 20, 2012 12:55:48 GMT
Don't frrettle petal. I dont' really think it's necessarily down to no DPC. Its just one of those things. You'll get that if a gutter drips down a sheltered wall too. Air circulation to evaporate any dampness from the brick faces is more important. Maybe even install guttering to your roof, and fit a downpipe off to a drainaway or flowerbed away from the area.
Get a fungicidal wash from a builders merchants and follow the instructions. It'll work better if the bricks are dry, as it'll be taken into them. So have a go now, and get another one done after a long dry spell in the late spring. It'll keep coming back eventually though, unless you can improve any airflow around the building. With putting our little ovens in gardens corners, we're sort of opening ourselves up to these sort of problems. The Autumn provides a perfect environment for a little algal growth due to rainfall, mists, etc and occasional lifts in temperature. Personally, i think it'll just add a little character to your lovely oven.
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Post by DuncanM on Nov 21, 2012 13:38:08 GMT
Cheers for the response Terry/bookemdanno, Terry - The damp isn't anywhere on the main oven structure/chimney etc, all that's water tight and fine. The problem is where the countertop wall joins the brick oven wall and the countertop in general. But reading your comments it does sound like it's probably the rain from above and possible lack of air flow. I'll stick a tarp over the wall (it is hollow after all) and open to the environment to stop alot more excess rainfall hitting it, then hit it with a fungicidal wash (depending on cost I might do one now, and one in the spring). Once I install the countertop it should hopefully keep the bricks dry, including the installation of guttering/waterbutt (was always on my list to do) fingers crossed it'll solve it. Worst situation is that it is rising damp, in which case I'll go down the damp proof injection route. Cheers for your number Terry, I hope I'll be OK, but I'll be in touch if the above things don't work - although they won't be done until next spring / summer. I'll post some more updates when I've finished the patio, it's taken a lot longer than expected because of a huge increase of the weekends I have had to work on, weather and the fact I've just had an electrician in to run electricity down to the oven Now if the temperature is warm enough I can lay some more slabs.
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Post by bookemdanno on Nov 21, 2012 20:09:13 GMT
Try to make sure your countertop overhangs the brickwork, and if you can, use an angle grinder to create a groove in the underside of the countertop overhang. This will create a drip, where rainwater will drip from, rather than creep back towards the brickwork. Look at the underside of a door drip, you'll see the very same thing. The theory is, water can't run uphill. Unless its pushed of course!
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Post by DuncanM on Nov 21, 2012 20:31:16 GMT
Good advice about the drip groove, I'll make sure I take that into account. The countertop will overhang by ~12 inches all the way around the outside so plenty of cover from that. Thanks for the advice again
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Post by DuncanM on Jan 8, 2013 10:42:22 GMT
OK here's the photo I promised about the damp: I've since covered up the countertop brickwork with a tarp so it should see it through till Spring when I start casting the countertop and after that it'll provide cover from the rain. Also I'll be applying a waterproof sealer to all the brickwork.
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Post by cannyfradock on Jan 8, 2013 20:08:31 GMT
Duncan
After seeing your picture it looks like you have actually tied the brickwork into your existing house. Again, reading back over your thread you said you missed the DPC in the brickwork. Normally this wouldn't be a problem as a wall that is butted up to a house wall would be just that...butted up, with the addition of a firfix or starter ties to give strength.
Keep your eye on the internal corner to make sure no damp is being trasferred to your inner wall. (when "toothing in" is done often the mortar falls behind the brickwork and builds up in the cavity. With no dpc in the new wall capillary action will draw moisture in to your inner wall).......saying that.....don't panic if that is the case. It's an easy fix for a brickie......just keep your eye on it.
As always....I love it when I look back over someone's thread and see "again" the main topic....that's one sexy beast you have built!!!
Terry
p.s......like I said...don't panic if you have internal damp issues. Consult a brickie or drop me a PM/e-mail.
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Post by DuncanM on Jan 9, 2013 13:31:32 GMT
Terry, No, no, no, that isn't a house. That's my brick oven The countertop is coming out of the right hand side of the oven. Thanks for the kind words! I'll keep this thread upto date with progress which I make in the coming spring/summer, which should include: Finishing the slate patio Adding a chimney pot to the oven Casting concrete slab for the countertop Casting a small concrete slab on the entrance of the oven (the part that won't feel heat - I'll add a heat-stop).
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Post by DuncanM on Feb 13, 2013 9:40:10 GMT
A little later then promised Terry, here's some shots of my oven in the snow. Still not finished, but not far off: Countertop wall covered up with a tarp until spring time when I can commence on the actual countertop: Fire in the belly of the beast: www.brickovenbuild.com/images/links/2013/2013-01-20 16.28.53.jpg[/img]
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Post by turkey on Feb 13, 2013 15:43:20 GMT
I think it looks even more grand with its chalet style snow cover
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Post by cannyfradock on Feb 13, 2013 19:12:18 GMT
....I just think it's the dogs bollocks......thanks for pics Duncan.
Terry
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Post by limpopomark on Feb 13, 2013 19:56:11 GMT
jeez... and i was proud of my efforts... good work fella!
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nick
WFO Team Player
Posts: 147
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Post by nick on Feb 16, 2013 18:34:23 GMT
looking good
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Post by DuncanM on Apr 14, 2013 23:07:07 GMT
It's been a good few months but things are still progressing so I thought I'd share a few more photos with you all. I've been focusing most of my effort on finishing the large slate patio around the oven, which is about 75% complete. However I've just started planning and testing in preparation of my concrete countertop in a few months time. I've cast two 15cm x 15cm squares to test some sample aggregates I got. Glow in the dark (green, blue and turquoise from Ambient Glow Technologies, free sample and delivered incredibly quick [much quicker than samples from UK based companies]) and also coloured glass aggregate from specialistaggregates.com. I built 2 small forms out of melamine backed board, taped up and then used black silicone caulk (should have used white in hindsight with black concrete). Here's a pic of one of the forms after I'd removed the set concrete: I was testing out the black powder cement dye from Wickes. I used way too much. Will experiment with less in the future (but still aim for the same colour). I forgot to vibrate/shake the concrete to remove any air bubbles, but hey, these are tests First slab out of the mold. The white powder stuff is glow in the dark sand, but that ended up getting grinded off as it was too high up on the surface: 2nd slab. Note that a lot of larger aggregate was stuck to the bottom of the form with silicone (remember black), so it's difficult to spot. Top side of one of the slabs - I through the remaining glow in the dark sand in, but it was so little it got grinded off. Eh voila - the polished version of the slab above (with no large glow in the dark aggregate, just the sand which got grinded off almost straight away). The 2 shades of glass aggregate (turquoise and blue) are visible: The other side. The glow in the dark aggregate is very obvious (I don't like the small square pieces, but I don't mind the larger ones) Slab 2: and the party trick - at night (taken with phone camera under a blanket so a bit out of focus). and two slabs again: I'm generally very happy with the tests. Somethings I'm not (air bubbles being the main one) but I could always fill them in with a cement slurry. I'm not going to bother with these two though. The finish is a lot smoother than the photos suggest, there is an element of mirror finish to them, but it could certainly be more if I gave it more time. I used a wet polisher my parents bought me for my birthday in 2012 (finally got it out of the box). It was cheaper to buy it there and import it compared to a new one over here. It came with 7 different grits - 50, 100, 200, 400, 800, 1500 and 3000. Future tests will include a more accurate mix of concrete - a 40N pre-made sack mix with the addition of glass fibre hairs for strength, and playing with a black liquid cement dye. I'd also like to test different shades. Countertop will be commenced sometime in June / July most likely.
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stevo
WFO Team Player
Posts: 118
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Post by stevo on Apr 15, 2013 9:55:55 GMT
That counter top is going to be the absolute balls!!
What a great idea, i love the black and blue one it definitely looks the best...
Top work fella
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Post by bookemdanno on Apr 15, 2013 12:13:44 GMT
Have you been sneaking about on Forno Bravo??? You'll need to fill those small air pockets and get some sort of sealer, or Jack Frost will pay you a visit! Very nice idea, and i really like the G.I.T.D Squares! Did you add it to the mix, or sprinkle on the top?
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