|
Post by faz on Sept 7, 2012 19:40:01 GMT
Pete,
The DPC is something that is easy to do now, but impossible to fit later if you do have a damp problem. If you have it available I would bung it on. The weight of the oven will make sure everything stays in place.
|
|
|
Post by cannyfradock on Sept 8, 2012 9:30:25 GMT
Pete The dpc(damp proof course) is like the insulation.....the more the merrier. The dpm(damp proof membrane) in your slab should stop rising damp. The idea of putting dpc on top of your first course is to stop any damp that hits your wall at ground level rising up your wall. You can put the dpc on top of your walls and under the lintels.....it will serve the same purpose. The dpc is very thin so.....yes, it's purely the weight that holds it in place. It is advisable to put something like a 5mm piece of fibre board between inner and outer arches (as per your previous question). I didn't do this on my early builds and cracking has appeared from the top of this area.....no structural problems though, just annoying little cracks. Are you following Rhodrigo's build? ukwoodfiredovenforum.proboards.com/index.cgi?board=pompeiiovens&action=display&thread=540 .......he is a few stages ahead of you, and some of your queeries relate to his build. He has a similar set up to you on the vent situation... Terry
|
|
twobecks
valid member
Cooking like a mad man
Posts: 55
|
Post by twobecks on Sept 8, 2012 17:41:18 GMT
|
|
petec
WFO Team Player
Posts: 232
|
Post by petec on Sept 9, 2012 16:44:53 GMT
|
|
twobecks
valid member
Cooking like a mad man
Posts: 55
|
Post by twobecks on Sept 9, 2012 18:21:41 GMT
Hi Pete,
If you do go for the DPC cream, don't forget the cartridge gun... I had to buy a monster to load the 1litre cartridges into. Once I'm finished, it's going on eBay so I can get some money back on it - it cost £30 including delivery!
The photos are great - keep 'em coming!!
|
|
petec
WFO Team Player
Posts: 232
|
Post by petec on Sept 10, 2012 8:10:55 GMT
one quick question ....
next stage is for me to lay the thermalite blocks on top of my pavers for the sub-floor.
Is it best to use a dry mix or a wet mortar for this stage I want to get a really level sub-floor for the fire-bricks , and wondered which approach is best ? Also whether a 5:1 standard mix is OK ?
Cheers Pete
|
|
|
Post by bookemdanno on Sept 10, 2012 12:09:31 GMT
Thermolites are generally really thirsty, so a good soaking can make life easier and lay them on a standard mortar (6 sand: 1 Lime: 1 OPC), or something like that. If the slabs are pretty level, a nice smooth mortar and a large (10mm) notched floor tiling trowel might be a worthwhile investment. You can simply lay the Blocks like thick floor tiles.
|
|
|
Post by cannyfradock on Sept 10, 2012 13:58:40 GMT
Totally agree with the above comment, although I use a full bed to bed the thermolites down. I used the notched trowel to lay the hearth bricks in place.
Terry
|
|
petec
WFO Team Player
Posts: 232
|
Post by petec on Sept 10, 2012 15:32:59 GMT
thanks both .... onwards Pete
|
|
|
Post by cannyfradock on Sept 10, 2012 17:17:20 GMT
Nice neat work Terry p.s.... I also leave my level on top of my work when I get it right. p.p.s..I haven't left my level on top of my work for about 20 years.
|
|
petec
WFO Team Player
Posts: 232
|
Post by petec on Sept 10, 2012 17:51:53 GMT
cheers Terry was going to dry run laying out the thermalites tonight - but now its pissing down so I'm making a batch of sourdough instead, then washing the pots up while listening to some proper old man's rock on itunes ! hopefully it will be dry tomorrow evening. Good news is all my firebricks, blanket and fireclay turned up today so green light. Forgot to buy a bag of lime at weekend so detour on way back to leeds from Sheffield in the afternoon tomorrow after work. One thing I noticed today was that the new batch of firecbrick ( I already bought about 30 when I was planning a cob oven ) seem better - the first batch were a bit, well.... crumbly, in comparison - these are tougher and seem more fine grained. ordered same spec from Liam though . Rgds Pete
|
|
petec
WFO Team Player
Posts: 232
|
Post by petec on Sept 15, 2012 12:37:05 GMT
Thermalites bedded down this morning.
chalked out the position of the hearth, opening and brick ring.
trying to decide whether to go hearth inside the first ring - or first ring on top of the hearth ? Want to do a herringbone hearth. Any thoughts ?
Finally start with the firebricks tomorrow. Exciting stuff.
Rdgs all, Pete
|
|
|
Post by tonyb on Sept 15, 2012 13:46:00 GMT
I don't think that either way has any particular benefit re cooking. If you put the floor inside the dome then you might save a few bricks but probably spend more time cutting. If you think you have plenty of bricks then put the dome on top, if you think you are toght on bricks put the floor inside.
|
|
|
Post by reburner on Sept 15, 2012 18:13:30 GMT
Great thread. Keep the pics coming
|
|
|
Post by cannyfradock on Sept 16, 2012 7:42:39 GMT
Pete I laid my fire-brick hearth inside of my dome purely to save bricks. I first set my first ring out then I laid a herringbone floor and cut the edge fire-bricks with hammer and bolster (always better for those tricky cuts if you have a 9" angle grinder at hand.....wet the bricks first). Tips.... - Cover your hearth with something before starting the dome build. It will save time cleaning afterwards.
- Always try to clean the interior of the dome brickwork at the earliest possible time.
- Top of arch/dome transition is always a bit tricky. If you think the rings of the dome are going to be miss the top of the arch, then start turning your circle of bricks into more of a pear shape to make sure that top of arch and dome meet.
Terry
|
|