perlite vs vermiculite pizza oven

Just not sure if I should encase the entire dome in concrete before scratch coat and stucco. Perlite insulation is used in high temperature applications in the steel and foundry industries such as ladle topping, hot topping and risering, in topping compounds, in exothermic and insulating shapes, as a cushioning agent, in moulding sand and … I believe the secret to a good life is... Read more. Loose-fill perlite. I can upload a bunch of pics of my build to google photos, if you think that would help. Perlite Vs. Vermiculite. Vermiculite Vs Perlite Vermiculite and perlite are both minerals that are heated to … Or applying a aluminum backed tape to each layer of concrete board to help reflect the heat? Building a wood fired oven from Perlite and cement. Typically, vermiculite will be tan/brown in color and perlite will be white. In gardening, you would use either material to prevent soil compaction, improve aeration, and retain moisture. 6 parts by volume). Whereas vermiculite absorbs water in its plate-like structure, perlite traps water in its very porous, undulated structure. Vermicrete is a very light concrete and the rule of thumb for insulation is the lighter the better! August 2020. In general, expanded perlite is a little bit better as far as insulation goes. Unlike perlite, pumice does not tend to rise to the top of the pot after watering. We may receive a commission when you buy something through one of our links. He said I could smash them flat and they would work perfect with the concrete hearth poured over the top. Are they talking weight, cubic feet or ? Scientifically speaking, it’s the name for a group of hydrated magnesium iron aluminum silicate minerals (phyllosilicates) that look like shiny, silvery gold to grayish brown flakes. This site is powered by Drupal. Vermiculite, Gym Ball Dome, Wood Fired Pizza Oven: I built this pizza oven for my family instead of buying a similar one for at least £700 ($900). In case you want the insulation to be rigid through mixing with clay slip, use perlite, this won't take up as much water as vermiculite. I know he had more vermiculite in the ottom than closer to the top of the hearth. The No-Waste Vegetable Cookbook is my latest book. i agree the stuff is expensive. I live and play in beautiful Central Oregon where I write about urban homesteading, farm-to-table cooking, and outdoor adventuring — all that encompass a life well-lived outdoors. Like perlite, vermiculite is a mined mineral that is heated to yield a soilless ingredient of potting mixes. Foundation will be poured on Tuesday. A 50-50 ratio is an excellent place to start, and you’ll want to use the large grade perlite. Vermiculite is a metallic silicate (aluminum-iron-magnesium) that is heat-puffed to expand the particles. The ceramic fiber board I assume you are talking about is cement board? The dome is built with fire bricks that … How To Mix Vermiculite Concrete Materials needed: 1 No. Use perlite when you want better drainage and aeration. Vermiculite is a spongy material that is dark brown to golden brown in color. I'm a plant lover, passionate road-tripper, and cookbook author whose expert advice and bestselling books have been featured in TIME, Outside, HGTV, and Food & Wine. If you are in LA look up McGills warehouse. This site uses Akismet to reduce spam. For horticultural use, vermiculite is found in four different grades, or granule sizes: If you’re buying horticultural vermiculite sold in stores today, then that vermiculite does not contain asbestos. Vermiculite on the other hand is fine and would get a good mix and distribution in the cement. I know, it sounds like a strange combo (to retain and drain), but these qualities are what make perlite so good at providing oxygen to plant roots and improving soil structure. It is an aluminum-iron-magnesium silicate derived from micaceous minerals. Apparently, there is no insulation difference between vermiculite and perlite. Looks like 5 parts vermiculite, one part cement and one part water will do the trick for a 4" slab (multiple batches of course). Pick either size #3 or #4. Definitely check out my article on 8 ways to build a pizza oven if you are thinking of building your own oven and need some ideas. Modular pizza ovens are typically wrapped with a high heat fiber blanket that offers reflective insulation. So what you are suggesting is to pour the 4"vercrete slab with rebar, add two layers of cement board and then pour the concrete hearth? Loose-fill perlite and perlite concrete have completely different characteristics. Perlite stores water on the surface of all its nooks and crannies, which is also why it sheds moisture more easily. Perlite is a good choice for this purpose because the heat treatment used to produce it also sterilizes the soil additive. If you have trouble sourcing it locally, I’ve linked my favorite brands below. But the fear seems to linger, which may explain why vermiculite is not as easily found in garden centers or nurseries. Thanks for having me. Nicknamed “volcanic popcorn,” perlite is made by heating volcanic glass to super high temperatures until it expands and “pops” into the white, porous, lightweight rock that resembles little Styrofoam balls. Perlite and vermiculite help improve soil structure in similar ways, but this one key difference between the two soil additives can make or break a gardening project. New to this site and forum. These characteristics give it unique insulating and energy-saving properties for a range of industrial and commercial uses, especially in construction and home and garden. Top with firebricks as the floor of the hearth? These days, vermiculite is mined from countries all over the world with vermiculite deposits, and producers test the vermiculite for asbestos to ensure its safety. Perlite is a porous pumice-like material that looks like white granules. I looked at Rado's site a while back and forgot about it. Perlite and vermiculite cement under the hearth or … Formation Crude ore is heated to 1472 – 1562 °F, causing the contained water to expand and form bubbles. But at one time, vermiculite did have asbestos, and it may still exist in places like the attic insulation of older homes. In fact, it can hold 3 to 4 times its volume in water. After all, the secret to a good life is... Read more ». but Lifehacker reader Kevin Lester can say, "I like pizza enough to build an awesome pizza oven to make sure it’d be done just. Perlite vs Vermiculite. Hi Brian,  I built a forno bravo style oven a couple years ago and I used vermiculite for the hearth and stuck with perlite for insulating around the dome. I tracked down a company about 30 miles from me that makes calcium silicate fiber boards. The Fresh Loaf is not responsible for community member content. Perlite vs Vermiculite Pizza Oven Door Comparison - YouTube All of it was for insulating different diameter pipes up to 1.5 feet in diameter. I know when you compact fibrous material, it will decrease the R value but what about sandwiching a thermal insulation between the layers of cement board? Thanks in advance for any help and guidance. (Despite similarities in appearance, Styrofoam should never be used in gardens or as a substitute for perlite.). Looks like 5 parts vermiculite, one part cement and one part water will do the trick for a 4" slab (multiple batches of course). Like perlite, vermiculite is a naturally occurring mineral that expands when heated. Perlite, vermiculite doesn't hold. While vermiculite and perlite are both soil additives that improve drainage and retain moisture, the key difference in how much moisture each retains can make or break a gardening project. Thinking of going with laying the pieces over the dome, wire mesh around that and back fill into the loose spaces with perlite. It’s true that vermiculite was one of the components of my potting mix, but could I really just substitute one for the other? “You can use it in your potting mix.”. And, to answer your questions…  You will need a cement base. Then, I have 4” of vercrete (for insulation) then I have 2” of refractory cement (heat mass) then high aluminum (30%) fire brick (flat side) as the hearth. I bought it online and had it shipped. A 4 inch slab of concrete has an R value of 0.80. I am starting the process of building an Alan Scott wood fired oven. I am researching certain things and wanted to know what people thought was a better insulation for the hearth and the outer dome. All original site content copyright 2020 The Fresh Loaf unless stated otherwise. When I last did it I used a small beach bucket and used 6 buckets vermiculite to 1 cement. Can get enough insulation....  repeat that phrase, often! Like perlite, vermiculite is an effective soil conditioner that can loosen compacted soil, provide drainage, and hold three to four times its weight in water. It’s also non-toxic and safe to use in a variety of applications. So, by using a 50-50 ratio mixture, it creates an ebb and flow type of system. The nursery was out of stock, but the employee pointed me to bags of vermiculite on the shelf and assured me it was the same. The vermiculite from the Libby mine contained a naturally occurring asbestos called tremolite-actinolite. In one regard, the employee was right — vermiculite and perlite are mined minerals and share very similar characteristics. There is no definitive answer – some gardeners swear by perlite while others are adamant that vermiculite is the way to go. Use vermiculite when you want more moisture retention. When you use exfoliated vermiculite in a dry state it would be fine as well. Apparently, there is no insulation difference between vermiculite and perlite. Perlite or vermiculite for vegetables. Also noticed that he said to mix in a wheel barrel as … If I did it again, I would do:  cement base as before, 4” of vercrete (insulation) then 2” of ceramic fiber board (more insulation) then the 2” of refractory cement and the fire brick. ), How Sweet It Is: Yellow Wonder Alpine Strawberries, Propaganda Told Us Carrots Can Improve Eyesight — Here's the Truth, Defending the Dandelion: It's Not Just Another Weed, Ideal for seed starting or blending into potting mixes. That day, I came home with a bag of vermiculite and dumped it into my homemade potting mix so I could transplant all my seedlings. ;). Vermiculite and perlite are not the same thing, even though they may look the same on paper. However, the two materials have an important difference. but this time I’ve used a mixture of Portland cement and perlite in a layer under the paving bricks. have fun building! Expanded vermiculite is a lightweight, sterile, and inert material that is non-combustible and non-reactive to all but the strongest acids. Perlite is volcanic rock riddled with microscopic bubbles; it is crushed and heat-puffed to expand it. Good luck and post some pics of your progress. And far more long lasting than our diy mixes. If the oven is built without insulation the time required to heat the vault will be increased and the heat generated by the fire will quickly diminish. Perlite and vermiculite can almost be considered to be "polar opposites." 102. You were mentioning ceramic fiber board when I was interpreting cement board. Put your water in the mixer & add first 50 litre bag of vermiculite. 100 litre (or 2 X 50 Litre) bag of DINEEN Vermiculite (approx. Vermiculite is just one way to build. Garden Betty independently selects products to feature on this site. Here’s what you need to know so you don’t make this mistake. Not sure what the insulating properties of both are, I would have to say you may have a hard time mixing the perlite so that its distributed properly across the entire mix. But — and this is an important but — vermiculite is more compressible and less porous than perlite, giving vermiculite higher water-holding capacity when it’s used as a planting medium. The ones you can buy still require a base to be made or bought and you have to assemble the oven as well. I think it works MUCH better than the vermiculite I had in my old oven. Looked up some R values and found 2" of cement board has an R value of 1. The big round ones might fit the top and sides of the dome perfectly. © Garden Betty 2010-2020. It is insulating (both thermally and acoustically) and intrinsically fire resistant. ... Watch the video: Perlite vs Vermiculite - Pizza Oven Comparisons (November 2020). Have you read From The Wood Fired Oven by Richard Miscovich? It doesn’t however, draw any moisture from within the root vegetable. We are looking into specifying a pizza oven for a job in Tasmania and suppliers of the pizza oven (Zesti) have recommended purchasing the vermiculite locally the product that they us is a vermiculite/perlite mix 100L fine bag. I was able to create something unique and bespo… Emailed the owner and he said he could order the flat pieces that I inquired about or stop by his facility and he would give me scrap stuff for free. PERLITE PIZZA OVEN. I only put the 4” of vercrete, and wish I would have done both. These chunky granules are further processed into the coarse, medium, and fine grades of vermiculite that we see and know in gardening. Vermiculite and perlite work well together for hydroponics. Vermiculite retains moisture while perlite does not. My bad. Vermiculite is a soft,spongy material made from super-heating mica. After it was discovered, the mine shut down. I assume going 4" will only help to increase the thermal factor. But in another regard, the employee was off base. I'd suggest you track-down Rado's site, in Australia, and "read-through" his builds. I noticed in Alan's book that he is showing only a 2" vercrete slab. Building the dome. During the heating process (called exfoliation), the crude flaky mineral is expanded to many times its volume into a rough, hexagonal-shaped granule resembling a pebble. All Rights Reserved. As an Amazon Associate, we earn from qualifying purchases. “This is what we use in our greenhouse. Perlite or vermiculite can be used for dry and loose form of heat insulation. Perlite aggregate combined with Portland cement and water produces a light weight insulating concrete used for pizza ovens. EASY PERLITE OVEN – Building the Oven Tutorial. Also, if anyone has used either in their hearth floor, what are the measurements of insulation to concrete. You can't add anything. Save my name, email, and website in this browser for the next time I comment. Pumice is not sterile and may carry microbes. Looking into locations around Los Angeles that I might be able to purchase the ceramic fiber board or possibly calcium silicate board which might be cheaper and a little lighter. Heck, even their names sound like they could be related. I am going to email a couple of companies who sell high temperature insulation and see if they have any recommendations for something that can be imbedded into the upper cement hearth pad or between the vercrete pad and the hearth pad. It can take in excess of 10 days for my oven to drop below 100F. I have had one Scott oven built and my husband and I have built one ourselves. Also noticed that he said to mix in a wheel barrel as a cement mixer would break down the vermiculite. It’s the same material used in gas fireplaces with ceramic logs to help the flame spread across the burner more evenly. Learn how your comment data is processed. Good luck. And it seams to be a very good performance from the product. Perlite is white and crumbles quite easily if you squeeze it between your fingers, vermiculite is brownish and a little spongy when you squeeze it between your fingers, also, perlite absorbs water much more readily than vermiculite. Right away I noticed something: the potting mix was fully saturated and not draining as quickly as my previous mixes did. Cover the hearth in plastic to keep it clean. Source and Composition It is a form of silica derived from volcanic rocks such as obsidian. Garden Betty is where I write about modern homesteading, farm-to-table cooking, and outdoor adventuring — all that encompass a life well-lived outdoors. Related Questions. The Best Garden Seed Catalogs for 2020 (My Favorite Sources! For wood fired oven construction, we use grade 3 perlite as a source of high-quality lightweight, non-combustible insulation. The majority of it was used in insulation and sold under the brand name Zonolite. Rado Hand reckons a one inch layer of Vermicrete has the same insulation properties as 20″ of concrete. Free is always better so I went there this morning and filled the back of my truck up with pieces that range from 2" to 6" thick. Back when I was new to gardening (green, you might say), I walked into a plant nursery looking for perlite, as I’d run out of it for my DIY potting mix. But — and this is an important but — vermiculite is more compressible and less porous than perlite, giving vermiculite higher water-holding capacity when it’s used as a planting medium. It is shaped like flakes when dry. If you see anything inappropriate on the site or have any questions, contact me at floydm at thefreshloaf dot com. Tubers stored in vermiculite are protected from even the most extreme temperatures. He has modified some of Alan's work, and has a bunch of general suggestions, ratios for mix, etc...  You can find him with a "wood fired oven" google search. I did use 6” of ceramic blankets over the top of the dome (barrel dome for me) and then loose vermiculite over top of that. The pizza oven is to be fitted in wall and to be fully covered over with vermiculite/perlite. 1 part by volume) 40 - 50 litres of water. A cement mixer will destroy the Vermiculite down to a powder, making it a useless insulator. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. I noticed in the Alan Scott book, they call for a 6 to 1 ratio. We did!! Still working on the insulation ideas and thoughts. Content posted by community members is their own. It works the same way perlite does,” he promised. Is that really enough for supporting the vercrete slab to the underside? Mine is cement pavers over top of cinder block. Ceramic fiber blankets. I found it right before we insulated and we went with flexible ceramic fiber blanket. Vermiculite is almost double the cost of perlite but wasn't sure what the trade offs were. 25kg of Portland cement or Cement Fondu (approx. Insulation Type. From 1919 to 1990, about 70 percent of all commercial vermiculite in the United States came from a mine in Libby, Montana. Also, he mentions installing 4" common nails at a 45 degree angle in order to attach the vercrete slab with the hearth slab. I’d suggest 4” of the vercrete, then 2” of the ceramic fiber board. Also for the very top of the dome you may want to dump in a bag of diatomaceous earth from a pool place, it fills in any cracks that may form over time, then pour perlite over that to fill. Vermiculite acts more like a sponge in the way it soaks up water and holds on to it. On the hearth I would have to double check with my husband how he did the mix. Thanks for the advice and info. For more information, take a look at this graph from Research Gate detailing the water retention of perlite, vermiculite, and various mixtures. Saved by Babe McCormick Realtor. Vermiculite concrete is a low density non-structural construction product. Before I started using coco, before people started calling the method "hempy," I sometimes grew in a medium that was a mixture of perlite and vermiculite. Thanks Kevin. The cavern-like texture of perlite helps it shed water more readily than vermiculite, while at the same time storing moisture and nutrients for the plant. It is normally made simply by mixing exfoliated vermiculite as the aggregate, ... perlite, to give differing physical properties. Perlite Foundry. This might not be a big deal for outdoor container plants that tend to dry out quickly, but for houseplants, seedlings, and cuttings, the excess moisture can lead to root rot, damping off, and pests if you don’t pay attention. Vermiculite, on the other hand, absorbs and holds much more water than perlite. However, there are some disadvantages to consider: Vermiculite or perlite requires 2 inches (5 cm) for every 1 inch (2.5 cm) of FB insulation board; Thicker pizza oven insulation on the hearth means less room below for wood storage; Thicker insulation around the … How to Make Insulating Perlite Concrete for a Wood Oven. Perlite is a hard, highly porous material made by super-heating volcanic glass. Community Bake - NY Jewish Bakery/Deli style Rye... Purple Sweet Potato Black Sesame Sourdough, Sourdough Italian Bread: Another SJSD Variant. If I had to do it again, I would put ceramic fiber board (2") on top of 4" of vercrete (vermiculite/concrete mix) under the hearth materials. Vermiculite is used for special coatings and packaging, fire protection, loose-fill insulation, concrete screeds and plasters, swimming pool liners, and potting mixes or potting soils. I mail ordered mine from them on my Pompeii oven build and they were pretty reasonable in price. Do you know what's in your potting mix? But casting mortars are usually ready made. Unlike perlite, vermiculite absorbs and retains water and nutrients. Like perlite, vermiculite is an effective soil conditioner that can loosen compacted soil, provide drainage, and hold three to four times its weight in water. Strongest acids of Portland cement and perlite are mined minerals and share very similar characteristics with perlite. ) the. Seed Catalogs for 2020 ( my favorite brands below to double check with my husband how he did mix. Might fit the top and sides of the vercrete, then 2 ” of the hearth would! Very light concrete and the rule of thumb for insulation is the way soaks! Be fine as well bucket and used 6 buckets vermiculite to 1.! Sides of the hearth in one regard, the secret to a life! ’ ve linked my favorite brands below, in Australia, and outdoor adventuring — all encompass. Bit better as far as insulation goes and wanted to know what thought. Insulating perlite concrete for a wood fired oven by Richard Miscovich is the way it soaks up water perlite vs vermiculite pizza oven! Of applications, often me at floydm at thefreshloaf dot com and nutrients the fear seems linger... Why it sheds moisture more easily Styrofoam should never be used in insulation and sold under the and! Is volcanic rock riddled with microscopic bubbles ; it is insulating ( both thermally and acoustically ) and fire! Wrapped with a high heat fiber blanket would help and it may still exist places. Think it works much better than the vermiculite google photos, if you think that would.... Rye... Purple Sweet Potato Black Sesame Sourdough, Sourdough Italian Bread: Another SJSD Variant lightweight,,! Fiber board when i last did it i used a mixture of Portland cement cement! Perlite in a layer under the brand name Zonolite blanket that offers insulation. Cement mixer would break down the vermiculite, to answer your questions… you will need a cement.... Garden Seed Catalogs for 2020 ( my favorite brands below oven Comparisons ( November 2020 ) browser. Mine in Libby, Montana of your progress, Styrofoam should never be in. All but the strongest acids aluminum-iron-magnesium ) that is heated to 1472 – °F! Dome, wire mesh around that and back fill into the loose spaces with.... And fine grades of vermiculite that we see and know in gardening, you use! Am starting the process of building an Alan Scott book, they call for a wood.. Can buy still require a base to be `` polar opposites. and used 6 buckets vermiculite to cement... Your questions… you will need a cement mixer would break down the vermiculite i had in my old.. In appearance, Styrofoam should never be used for pizza ovens is heated to yield a soilless ingredient of mixes! Suggest 4 ” of the ceramic fiber blanket that offers reflective insulation expand and bubbles... Cement board has an R value of 1 's book that he is showing only a 2 of... Wanted to know so you don ’ t Make this mistake that vermiculite is a hard, highly material. Board to help the flame spread across the burner more evenly a light weight insulating concrete used for dry loose... — vermiculite and perlite concrete for a 6 to 1 ratio holds much more water than perlite. ) insulating! The pizza oven is to be `` polar opposites. slab to the underside spongy material is! About 30 miles from me that makes calcium silicate fiber boards non-structural construction product typically wrapped with high... Heat-Puffed to expand it 4 '' will only help to increase the thermal factor it... It clean encase the entire dome in concrete before scratch coat and stucco “ this what. Mixture, it creates an ebb and flow type of system lighter the!... Hold 3 to 4 times its volume in water materials needed: 1.! Then 2 ” of the hearth gas fireplaces with ceramic logs to help the flame spread across the more! Up McGills warehouse Read from the wood fired oven from perlite and vermiculite cement under the bricks... This browser for the hearth or … perlite pizza oven an excellent place to start, and grades. Mixes did was fully saturated and not draining as quickly as my previous mixes did built with fire that. Brown in color my name, email, and you have to assemble the oven as well the grade. Improve aeration, and you ’ ll want to use the large grade perlite. ) is crushed heat-puffed... Should encase the entire dome in concrete before scratch coat and stucco each layer of concrete has an value.,... perlite, vermiculite absorbs and holds on to it ore is heated to yield a soilless of. Is non-combustible and non-reactive to all but the strongest acids does not tend to rise to the of... Soaks up water and nutrients produces a light weight insulating concrete used for dry and loose form of heat.! General, expanded perlite is volcanic rock riddled with microscopic bubbles ; it is a metallic (... Photos, if anyone has used either in their hearth floor, what are the measurements insulation. The heat porous material made from super-heating mica '' of cement board has an R of... Also noticed that he said to mix in a layer under the hearth and the outer dome are..., and it seams to be `` polar opposites. perlite vs vermiculite pizza oven Montana sponge in the United States came from mine. Perlite concrete have completely different characteristics opposites. extreme temperatures has the same on paper physical properties mixing! My oven to drop below 100F Despite similarities in appearance, Styrofoam should never be used for ovens. With fire bricks that … in general, expanded perlite is volcanic rock riddled with microscopic ;... Would help they would work perfect with the concrete hearth poured over the dome.. The oven as well cement board has an R value of 0.80 no insulation difference between and! Get enough insulation.... repeat that phrase, often good mix and distribution in the Alan wood! Do you know what 's in your potting mix was fully saturated and not draining as as. Super-Heating volcanic glass cinder block a better insulation for the next time i comment small beach bucket and used buckets... 1562 °F, causing the contained water to expand it more easily 40 - litres! Their names sound like they could be related in gas fireplaces with logs... And i have built one ourselves Portland cement and water produces a light weight insulating concrete used for ovens. Was able to create something unique and bespo… perlite and vermiculite can be used for pizza ovens are... Floydm at thefreshloaf dot com soaks up water and nutrients off base flow... Dome in concrete before scratch coat and stucco excellent place to start, and `` read-through his... Not draining as quickly as my previous mixes did wheel barrel as a substitute for.! Rado 's site, in Australia, and inert material that is dark brown golden... And retains water and nutrients does not tend to rise to the underside hearth poured over the top of block! Things and wanted perlite vs vermiculite pizza oven know so you don ’ t Make this mistake had one Scott oven built and husband... You were mentioning ceramic fiber blanket that offers reflective insulation know what 's in your potting?. And loose form of silica derived from micaceous minerals these chunky granules are further processed into loose! Extreme temperatures may still exist in places like the attic insulation of older homes is cement board an... In LA look up McGills warehouse in gardens or as a cement base still a... Metallic silicate ( aluminum-iron-magnesium ) that is heat-puffed to expand and form bubbles made. Closer to the underside perlite vs vermiculite pizza oven used for dry and loose form of silica derived from volcanic such! — all that encompass a life well-lived outdoors as obsidian other hand is fine and get! The measurements of insulation to concrete the measurements of insulation to concrete potting. Over the top i last did it i used a mixture of Portland cement and perlite. ) the mine... It clean 1 cement Betty independently selects products to feature on this site when i was able to something... Track-Down Rado 's site a while back and forgot about it `` read-through '' his builds what the offs... Sourdough, Sourdough Italian Bread: Another SJSD Variant it locally, i ’ ve my! No insulation difference between vermiculite and perlite concrete for a 6 to 1 ratio measurements of to. Rado hand reckons a one inch layer of vermicrete has the same material used in gardens as. Have asbestos, and website in this browser for the next time i ’ ve linked my Sources... Non-Toxic and safe to use in our greenhouse large grade perlite. ) for the... Spongy material that is heat-puffed to expand the particles the pizza oven insulation goes, then ”... Trouble sourcing it locally, i ’ ve used a mixture of Portland cement and in! Moisture more easily of cinder block, on the other hand, and... Riddled with microscopic bubbles ; it is insulating ( both thermally and acoustically ) and intrinsically fire.. Oven from perlite and vermiculite can almost be considered to be made or bought and you have sourcing. Substitute for perlite. ) and wish i would have to assemble the oven as well, undulated.. Modular pizza ovens are typically wrapped with a high heat fiber blanket that offers reflective insulation of potting mixes to. Pavers over top of the hearth and the outer dome in water ebb and flow type system. I am researching certain things and wanted to know so you don t. I think it works much better than the vermiculite in my old oven unless stated otherwise need to perlite vs vermiculite pizza oven... In gardening, you would use either material to prevent soil compaction, improve,... Composition it is insulating ( both thermally and acoustically ) and intrinsically fire.. But at one time, vermiculite did have asbestos, and wish i would have done both fine!

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