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Refractory cement pizza oven

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The easiest way to mix refractory cement for you pizza oven.www.pizzaoveninabox.com.auemail: info@pizzaoveninabox.com.a Ideal for insulating under the hearth firebrick (the cooking surface) in bread and pizza ovens! Replaces Vermiculite or Perlite in your oven base. Castable weighs approximately 35lbs per cubic foot and is shipped in a 50lb bag. For estimating purposes, approximately 3lbs will cover one square foot, one inch thick Formula 1 part Furnace cement + 4 parts Perlite (This is by volume. For example, if you use ½ gallon of Furnace cement, you will need to purchase 2 gallons of Perlite.

Re: DIY castable refractory I think for a pizza oven you want calcium aluminate cement instead of portland, and firebrick grog instead of clay (as aggregate). I think most instructions call for SS needles for strength as well This refractory mortar is designed to successfully withstand high sulphur fuel, reducing atmospheres, carbon deposition, erosion and abrasion. This castable refractory cement can be used for gunning, casting, troweling, or extruding. Yield: 131 Pounds dry yields 1 cubic foot. 50 pound bag yields approximately 0.38 cubic fee

The cement and mortar must cure first, and this process is actually improved by keeping the cement moist and not letting it dry out. Space heaters should not be used to cure brick ovens. They will produce a high amount of steam in the oven and can become a safety hazard Simond Store Castable Refractory Cement 60% Alumina Hydraulic Bonded Dense Cement Castable, 2900F Rated, High Temp Cement for Foundry Furnace Fireplace Oven Stove Forge Lining - 44 Lbs. $137.99 Excellent for pizza's, breads and other low profile foods. America's LOWEST priced Barrel-Shaped (Refractory Cement) Pizza Oven! The average FINISHED Cortile Barile pizza oven (including the base) costs around $1800! Extremely-Detailed and Ridiculously-Illustrated Pizza Oven Plans with Materials Lists can be downloaded for FREE from our website Outdoor Oven Cement. Vitcas® Outdoor Oven Cement is a pre-mixed dry refractory mortar suitable for jointing fire bricks, jointing Vitcas® Sectional outdoor ovens and for general purpose exterior use with barbecues, pizza and bread ovens, firepits and any other high temperature application. Non-water soluble this is a hydraulic set mortar.

Refractory Cement Pizza Oven - Luxury Backyard Pizza Oven

Answer While Castable Refractory Cement can be used to build a brick oven, we do not recommend allowing food to come into direct contact with the cement. You should use something like a pizza stone as the cooking surface. Can this material be use to make the floor of oven smod Forum / Refractory concrete. Concrete is extensively used in the construction of brick type wood fired pizza ovens. The concrete type and mix required in the oven will depend largely on the location of the concrete and the temperature heights and fluctuations it is exposed to. If the hearth , dome or other high impact 'hot face' areas are.

Ooni Koda - 932°F Gas-Fired Pizza Ove

1) Cement that has cracked; and 2) Cement that is about to crack. I also note that industrial furnaces for glass & ceramics are generally made of brick rather than solid. That said, the kits that are available are generally made of castable refractory, (but again, they have joints built into the design) and mud ovens seem to work just fine It can be bought coarsely ground which is best, and then mixed with a refractory cement to make a concrete suitable for use in a pizza oven. Once it is mixed, you will need to layer it on a structure and allow it to dry. You can use an exercise ball as mentioned previously, or build your own with cardboard, wood or chicken wire Refractory cement is able to withstand temperatures in excess of 2600°, which is roughly 2x hotter than you will ever get your pizza oven. Refractory cement is designed for THICK refractory applications like pizza oven construction, building a forge or even making your own fire bricks. This product is NOT firebrick mortar This pre-cast refractory concrete pizza oven kit simply locks together, giving you assured build quality as it comes with a 10 year guarantee! With the Mila 60 pizza oven kit, you can also choose the style and finished look of the oven, as there are two kit options; The first kit option comes complete with the exterior fibre glass shell finish.

Refractory concrete mixing recipe Heat resistant

Refractory Cement Castable Refractory Cement at the

  1. Acid-resistant cement is one of most popular cements used in pizza oven. It has become popular for its resistant property against acid. It is composed of acid resistant aggregate, sodium silicate or soluble glass and additive. Acid resistant aggregate includes quartz and quartzite
  2. Building Your Own Wood Fired Pizza Oven It is possible to build an oven from reclaimed materials, but using purpose made fire bricks and other refractory materials that are designed to withstand high temperatures will result in a more efficient and long lasting oven than using ordinary masonry products
  3. Sep 16, 2019 - Explore Gjp's board Diy Cement Pizza Oven on Pinterest. See more ideas about pizza oven, pizza oven outdoor, pizza
  4. Davco Lanko 156 is a cement-based, rapid setting mortar for high temperature applications. A ready to mix mortar consisting of high temperature resistant alumnia cement and graded aggregates. Davco Lanko 156 High Temperature Mortar is ideal for pizza ovens, fire places and barbecues. It is heat resistant up to 1000°C

Each oven has an inner layer of brick and mortar, which is then covered with refractory cement. A thick layer of Rockwool Insulation is then applied and held down with metal batting before an additional layer of refractory cement. Authentic Pizza Ovens never use a galvanized coating or zinc galvanizing coating on any of their products Pizza Oven Education Station Wood-Fired Recipes Fired Up Outdoor Living Help Center Professionals Program Refractory Cement Indoor Wood Pizza Ovens . Filter by: construction_refractory_cement Filter. sort by. Sort by Featured; Sort by Best Selling; Sort by Alphabetically, A-Z. Excellent for pizzas, breads and low profile foods. Super-easy to build with step-by-step directions. Cooks faster and hotter than firebrick models. It only takes 2 hours to mix, pour and pack! Really! Save thousands over comparable models. Build the base and oven in just 2 weekends (or less) DIY-EZ Tangible Advantages. High compression strength greatly reduces the chance of hairline cracking.. High alumina content allows our residential refractory ovens to heat up in less than an hour; some in as little as 40 minutes—less than half the time of an old-fashioned brick, clay or concrete oven.. High density results in our ovens retaining heat better for baking Pizza Napoletana at high.

Pizza Oven Kit • Brick Oven - Build a Wood Fired Pizza Oven from Refractory Cement, Stainless Concrete Fibers and Our 5-Piece Cortile Barile Foam Pizza Oven Molds. Cast-N-Place/DIY-EZ! Brand: BrickWood Ovens. 5.0 out of 5 stars 1 rating. This fits your If you want to make a pizza oven that works, ask about how to make a pizza oven, without your own premises. If you want to make a refractory slab for a kiln, you probably need an industrial chemist. Because you don't need any of that for a pizza oven, even the most sophisticated one. 20x23 is a puny surface for a pizza oven

Sand, lime and portland cement are readily available from builders yards - the fireclay I got off ebay from a pottery/kiln supplier. The fireclay was about £10 a 25kg bag plus a big P&P! Apparently the cement will eventually burn out - the lime and clay do the sticking and the cement is just to initally get it to set Castable Refractory Cement. $ 51.22 - $ 83.04. RUTLAND Castable Refractory Cement is an exceptionally strong dry-mix cement that chemically sets and dries as hard as brick. Just add water! Perfect for casting into custom designs because it holds its shape while drying, just add water Your pizza oven's facade is entirely up to your imagination and masonry skills. Many DIYers are content to cover their oven dome with refractory cement and stucco and leave it at that. But you can get more creative and build a flat, domed or gabled roof on top of your oven Refractory Cement • Castable Refractory Cement - Whether you are building a forge, kiln or pizza oven, you need Refractory Cement. Unlike standard cement that begins to breakdown at 400°, refractory cement can withstand temperatures in excess of 2000° for extended periods of time. We sell thi

Builder's mortar or refractory mortar coupled with Portland cement based concrete or refractory concrete is used extensively to build high quality pizza ovens. A layer of mortar 1/4″ (6mm) thick should be applied between bricks to create solid adhesion Refractory Cement. $ 25.84 - $ 48.90. Rated 5.00 out of 5 based on 1 customer rating. ( 1 customer review) RUTLAND Refractory Cement is an ideal high-heat cement for masonry joints 1/4″ or less. Pre-mixed, easy to trowel, and fiber reinforced, this cement can be used to set, bond, and repair cracked or broken firebricks in stoves. RUTLAND Castable Refractory Cement is an exceptionally strong dry-mix cement that chemically sets and dries as hard as brick. Just add water! Perfect for casting into custom designs because it holds its shape while drying. It can even be used as the sole material when casting a solid stove bed or outdoor oven Harbison Walker Sairset 3000 Refractory Cement Fireclay Pizza Oven Kiln 55 Lb, Adjustable thumb rest for comfort, Good choice to you or your friends, a tweaked design so it works better with modern skinny Dyneema. Merriway BH02075 Hardwall Concrete Anchor. for a looser fit please order a size larger than typical Refractory materials (materials that can withstand high temperatures) are used in the construction and maintenance of ceramic studio kilns. Fire brick, ceramic fiber and castable refractories are the three forms of refractories used in kilns, but fire brick is the most significant. FREE Wood Fired Brick Pizza Oven Plans with Materials Lists.

A vermiculite pizza oven is one that is made from a concrete composed of the coarsely ground, highly insulatory mineral, vermiculite, and a refractory cement suitable to withstand high temperatures. The dome is formed by applying the concrete over a spherical mold, commonly an exercise ball and leaving it to dry This step by step diy article is about how to insulate a pizza oven. We show you how to prepare the mortar with vermiculite and to cover the oven with. cement. How to Make Insulating Perlite Concrete for a Wood Oven. Wood Fired Pizza Oven made. Perlite cement mix used on elite woodfired pizza oven. Jul 27, 2016. Loose-fill perlite Making wood fired pizza ovens available forresidential or commercial use. Poured Refractory UL Food-Grade Refractory Cement. One Piece ~ Ultra Smooth Cooking Surface. Hand-Finished. Made by Hand ~ One at a Time. Shipping Available Nationwide. Guidelines for Building Base & Finished Exterior Furnaces, wood fired ovens, kilns, forges and fireplaces. Products Available: 2011 - Insulating Refractory Castable (25kg Bag) 2016 - Refractory Aluminate Cement (25kg bag) 2202 - Refractory Mortar (Wet, per kg) 2204 - Refractory Castable C25 AM (1400°C, 25kg bag) 2206 - Refractory Castable D30 AM (1650°C, 25kg bag) 2302 - Vermiculite 0.001. The Rustico full dome slate pizza oven is handmade in Europe using the triple insulation technique. The interior wall is brick and refractory cement. A layer of insulation is next applied to the outside of the interior wall. A second layer of refractory cement is then applied to create the beautiful natural stone slate exterior

PERLITE PIZZA OVEN. 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. Building a wood fired oven from Perlite and cement. EASY PERLITE PIZZA OVEN - Part 1 - Building the form. Aug 17, 2020 - Want to build a small wood-fired outdoor pizza oven but don't have any masonry skills? No Problem! If you can make brownies, you can make the Cortile Barile oven Refractory cement, especially refractory insulating cement is always used for pizza oven dome building. The refractory insulating cement is used to conserve heat energy and reduce the consumption of fuel, for it has low density and thermal conductivity. And refractory castable cement is also applied in the pizza oven domes to filled the gaps. Can be finished with extra cement, stone, or brick to further increase thermal heat storage for long-term cooking This material takes longer to heat up the pizza oven Should be finished with a minimum 2 insulated blanket or other insulating materia Build a garden bread oven using a refractory cement mix, rather then adobe or bricks. Free diy pizza oven plans to build an authentic Italian brick pizza oven, including easy-to-follow instruction with photographs and detailed drawings. 'The oven component inside is made of a refractory clay dome with a firebrick floor

Build a Wood Fired Pizza Oven with Refractory Cement Make

  1. Refractory cement are excellent fire resistance and insulators. Since pizza ovens are made with intention of retaining high temperatures inside, refractory cements best serve this purpose. With ability to withstand temperatures of up to 1600 degrees, the cement keeps the pizza oven strong and does not crack on exposure to high temperatures
  2. Heat Cast 40 Refractory Castable. Use to cast a dome, inner hearth in a pizza oven. FREE Shipping. New lower price! Designed for use in very high-temperature environments, Heatcast 40 is Heat Stop's heavy-duty castable that's easy to mix and fire and heat resistant to temperatures of up to 2,500 degrees Fahrenheit
  3. g, imported firebricks which are available in a variety of.
  4. Step 3. Apply the refractory cement to the surface on which it is being installed using a trowel. Like typical cement, the more you run the trowel across the surface of the cement, the smoother it will be as the smaller chunks of sand or broken-up firebrick sink and the smoother, lighter elements of the refractory cement rise to the top
  5. 6) There is also new refractory cement used to cover the oven on the outside. The other great features are still there: the oven is very easy to re-finish on the outside with your choice of veneer (stucco, paint, tiles, stone, etc) or you can just leave it as is

Mixing Refractory Cement For Your Pizza Oven - YouTub

  1. Chicago Brick Oven started in 2006 with 3 neighbors and an idea. Fast foward 15 years and Chicago Brick Oven is the nationwide leader in manufacturing Do-It-Yourself (DIY) pizza oven kits, portable pizza ovens, and countertop pizza ovens! All Chicago Brick Ovens are proudly made in the USA using materials sourced in the USA. The ovens are made of high heat refractory cement that has been.
  2. a Castable
  3. g ever more popular as a way to get the most from your outdoor space, wood fired ovens offer cooks and chefs the chance to show off their skills at the heart of a social gathering rather than being shut away in the kitchen
  4. erals like alu
  5. Roma 900 Pizza Oven is the largest in our range and is generally used for commercial use although can be used domestically if you have a large enough area. The Roma 900mm oven kit with accessories includes: Refractory and insulated two-piece round oven floor with 900 mm wide cooking area; Three-piece refractory dome with 500mm openin

Lightweight Insulating Castable Refractory Cemen

  1. Regular cement or mortar found in most mortar mixes resists temperatures up to 600-800° F, but residential installations operate well in excess of 800° F. In addition to refractory products, you can purchase other masonry supplies, such as cleaning and repair products, admixtures and coloring agents, and more, at their online store
  2. Once your cortile barile outdoor pizza oven kits arrive, simply open each box and fill the foam voids with refractory cement or castable refractory.Our highly detailed diy pizza oven and brick pizza oven base installation instructions (with materials lists) can help anyone build an amazing outdoor pizza oven with heat.Outdoor pizza oven sets.
  3. The application of refractory cement in Kenya include: Incinerator walls, fences, Barbecues, fire drill areas, pizza ovens and other Industrial ovens Sewage and wastewater systems, Seaside projects, industrial floors, Agricultural buildings, lintels, sealing hinges; Blast furnace, Foundries, Forge furnace, Tunnel kilns
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Sharpen up your DIY skills and become the proud owner of your own pizza oven. This is a comprehensive step-by-step guide to building a pizza oven for your backyard. This is a complex build that will take several days - and the dome requires time to cure before use. Read the instructions and watch the video before starting construction. Words and illustrations: Renée Davies Photos: Sally Tagg. Refractory cement lining; 10m t ladle with hxs castables hg-a8; Mixing refractory cement for your pizza oven; Refractory tweaking and furnace information; How to fix a cracked fireplace; Using of refractory cement; Detail of refractory cement; Refractory Cement Linin Choosing the best pizza oven might not be quite as easy as sneaking off with the best slice from the pan but, with a little help? We think it could be. Forno Venetzia Bella Outdoor Living Alfa 4 Pizze Refractory Cement. Built-In: Refractory Cement/ Countertop & Freestanding: Powder Coated Steel. 304 Stainless Steel. 304 Stainless Steel. 304.

How to Make Refractory Cement 3+ Recipes - Delft Cla

  1. The Brick Oven comes in 2 pieces, top and base. 1 tube of Vitcas Heat Resistant Silicone. 1 tub of 5kg Vitcas Outdoor Oven Cement. Free standing black metal door. The dimensions of the oven are as follows: External: 850mm wide x 950mm deep. Internal: 590mm wide x 840mm deep x 400mm high. Weight: 260kg. No. of pizzas: 1-2 at a time
  2. The Refractory, Insulation & technical ceramic specialists. Thermal SolutioNZ Limited is a New Zealand owned & operated company specialising in refractory, insulation and technical ceramic solutions. Based in Highbrook, Auckland, we have been in business since early 2017. We manufature our technical ceramics here in NZ using a unique recipe and.
  3. ate Mortar1 part Calcium Alu
  4. Vitcas Outdoor Oven Cement for exterior jointing with fire bricks in pizza and bread ovens, barbecues, smokehouses, fire pits, and other high temperature applications. It is a hydraulic set mortar which is non-soluble in water and resistant to rain and frost
  5. a content means that our residential refractory ovens heat up in less than an hour; some in as little as 40
  6. How to repair a crack Big Green Egg, Kamado pizza oven outdoor refractory cement clay 3lb castable Imperial KK0061 refractory castable clay firebox repair pizza oven big green egg crack lid | BBQ Smoker Mod
  7. In a pizza oven where temperatures can reach up to 1400ƒF, it is essential to use materials that can endure these high-temperature conditions. The bricks are usually cemented together with refractory mortar. Refractory cement or fireproof mortar is a material specifically formulated to be just as fire resistant as fire bricks

Video: DIY castable refractory - Forno Bravo Forum: The Wood

The rocket sound is pretty cool when the draft gets going. The oven reached 450° in about 20 minutes which was so quick the pizza stone broke. I will cement it back together using masonry cement and also attach a refractory deflector plate to the bottom to take the brunt of the flame's intensity Refractory Cement. Refractory cement is a special type of cement that is designed to withstand temperatures at the higher end of the scale. This heat-resistant cement is often used when installing fire brick in kilns or ovens. It helps to hold the bricks together, sealing any cracks or openings between them

Calabrese Entertainer Pizza Oven Kit - Nepean Landscape

3000 Degree Castable Refractory Castable Refractory Cemen

Cements & Refractory Mortars. Our cements can be used for jointing refractory fire bricks, insulation bricks, fireclay bricks and other high temperature bricks. We also sell other refractory cements in this category for use in high temperature applications, such as with ceramic fibre and low bio persistence fibre products refractory cement recipe for pizza oven; Hello world! December 29, 2015. 0. refractory cement recipe for pizza oven. Published by at December 1, 2020. Categories . Uncategorized Refractory cement is a good material for the Incinerators patch and Furnace. At the time of bonding fire bricks and Setting in firebox chambers, refractory cement can play a good character. thermal insulation or Electrical. For providing thermal insulation from any type of heat it can do a better role

DIY Pizza Ovens & Build Your Own Pizza Oven UK

Curing Your Pizza Oven Brick Ovens Forno Brav

Terraforno hand-builds the most durable, best looking & highest performing wood-fired ovens or authentic fornos in the market today. We elevate traditional wood-fired oven designs & construction process by casting our fornos in thick refractory cement (fire-brick), that provides unsurpassed performance: even & consistent heat over a long period of time, saving on time/cost of constantly. Concrete is extensively used in the construction of brick type wood fired pizza ovens. If the hearth, dome or other high impact 'hot face' areas are constructed of concrete, it will be necessary to use a mix which is composed of refractory products such as crushed fire brick call 'grog', or refractory cement Also, known as Refractory Mortar. The mortar is also used as linings within kilns, furnaces, and ovens, in addition to refractories. In the glass and metal industries, refractory mortar and cement play an important part. Refractory mortar is also used in the manufacture of deflectors for rocket launching systems, making it the most. Mix the concrete and pour it into the frame. Use large flat trowels or a wood board to even out the concrete and give it a smooth, flat finish. Let the concrete cure for at least a day and until all dark spots are gone, the dark spots mean that the concrete is still wet or humid and not fully cured. pizza-oven-pouring-concrete field furnace refractories are suppliers of refractory products for industrial, commercial and domestic purposes. Established in 1979, we have over 30 years of experience in the industry. We are proud members of the Institute of Refractory Engineers and the Australasian Ceramic Society

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Many wood-fired ovens, kilns and fireplaces are built with fireproof concrete or other fireproof material known as refractory concrete. Commercially, fireproof concrete is made by mixing a product known as fly ash, a by-product of the production of Portland cement Want professional-grade refractory materials for your pizza oven project? How about a just add water high-temp mortar that is rated to 2800° vs. mixing / making high-temp mortar with silica sand, fire clay, portland cement & lime Density: 122 lbs./cu. ft. Color: Tan. Set and repair cast iron and steel furnaces, heaters, stoves, and boilers with this ready-to-use cement. It experiences minimal shrinkage for a permanent smokeproof and gasproof joint. Apply with a trowel or a spatula. A minimum temperature of 212° F is required to harden Chicago Brick Oven started in 2006 with 3 neighbors and an idea. Fast foward 15 years and Chicago Brick Oven is the nationwide leader in manufacturing Do-It-Yourself (DIY) pizza oven kits, portable pizza ovens, and countertop pizza ovens! All Chicago Brick Ovens are proudly made in the USA using materials sourced in the USA. The ovens are made of high heat refractory cement that has been. Alphatherm is an importer and a distributor of industrial products such as corrosion resistant materials, refractory materials, abrasion resistant materials, and vitrified clay pipe. Customer service is our primary goal. If you need a product, Alphatherm can find it for you

Amazon.com: Pizza Oven Kit • Brick Oven - Build a Wood ..

No need for a refractory liner in a solid fuel forge, even if some folks use it it's not really necessary. NO PORTLAND CEMENT in a HOT fire!! It can spall explosively throwing burning coals a considerable distance not to mention HOT SHARP shards of concrete hard enough to stick in your hide while it burns you Wood-fired earth ovens: experiments in DIY firebrick (aka castable refractory) very fibrous (partially digested hay) and typically used in mud mixes to limit cracking and add toughness. In a refractory oven mix, which gets very heat, voids in the mass from burnt-out organic matter can help moderate the effects of thermal shock by. WPPO Neo-Slim Dome ovens are built to last and perform with hand crafted construction using fire brick, refractory cement, stainless steel and tight woven thick Fire Blanket insulation. Low dome with excellent thermal mass to improved temperature management. The WPPO Neo-Dome oven has over 700 sq. in. cooking surface with an extra-thick refractory cement deck Even so, when concrete is used in ovens, kilns, and fireplaces, it is important that this fire-resistant property is further enhanced, so that these structures are able to function in the manner they are required to. Fireproof concrete is made by using cement that is called refractory cement

Outdoor Oven Cement Refractory Materials VITCA

Refractory cement is a versatile compound that can be cast into custom shapes, making it ideal for replacing firebrick, filling large, irregular holes in masonry fireboxes, and casting solid stove beds. You can even use it to repair outdoor fire pits. And, because this castable refractory cement usually dries in about twenty-four hours and. Outdoor pizza oven from howtospecialist;Pizza oven materials may be as cheap as mud or expensive as brick, cement and tiles.Precast refractory dome, refractory cooking floor, the oven's entrance, premixed renders and mortars, refractory or steel chimney and door with thermometer.Recycled outdoor brick oven from permaculture

Rutland 25 lbs. Castable Refractory Cement Tub-601 - The ..

Coke oven battery is a refractory structure, contained within a steel and/or concrete exoskeleton. This exoskeleton is held together in the lateral direction by a series of tie rods between steel. This castable refractory cement is a must to repair any chimney, fireplace, Big green egg, kamado, chimineas or any other earthenware or ceramic stove, fireplace, cooker or pizza oven.. Its castable so it can be formed into any shape. Custom firebox, pizza oven base, oven insulator, etc. 3 lb size is plenty for most repairs Red Concrete Patch 2KG,Fireproof Cement,Refractory Brick Bonding Clay,Used for DIY Fireplace Wall Repair. £56.00. £56. . 00. £4.98 delivery. Amazon's Choice. for refractory cement Matt tried to use a minimum of refractory cement,for reasons of cost. I have had some luck using RapidSet, an alumina based cement available at home depot. I replace the usual portion of aggregate with perlite,and add Roxul stone wool insulation fibers for crack resistance. My results are quite durable, but perhaps too dense

Refractory Concrete - DIY Pizza Oven Foru

Outdoor ovens with earthen veneers. Examples of pure cob and adobe, and refractory castable cement over bricks. There are two common ways of building cob ovens: one is to make a mold of sand, upon which the oven is built, and after which the sand is removed through the oven door Castable Refractory Concrete can be used by casting in moulds or a given area to create a high temperature thermal castable concrete barrier. It can be used for domes or floors in wood ovens, walls and lintels in furnaces, kilns, stoves and in many other refractory applications. We can divide refractory cement in multiple ways like cheaper and expensive as well as stronger and weaker. Hot face which can described as its one type of wall which facing primary hit from various source like inside wall fire bricks made pizza oven which always faces hitting from wood fire and red hot embers The cement holds everything together until the clay/silicate/lime stuff gets hot and starts creating refractory cement. Once that heat hits the normal cement it will start breaking down. So its a trade off. One gets stronger while the other weakens. Ovens like this built in the Roman empire are still in use This refractory cement by Rutland can be used to set, coat, or repair firebrick that has been damaged. It is an extremely effective sealant for masonry-to-masonry joints that are less than 1/4 thick and can also seal air and gas leaks around coal or ash pit doors. Once the cement is heat cured it will withstand temperatures up to 2000° F