{"product_id":"authentic-pizza-ovens-ultra-fire-crack-repair-kit","title":"Authentic Pizza Ovens Ultra Fire Brick Oven Crack Repair Kit","description":"\u003cstyle\u003e\n  .auf-h2 { color:#8a1f12; font-weight:700; margin-top:34px; }\n  .auf-h3 { text-decoration:underline; text-decoration-color:#000000; text-decoration-thickness:2px; text-underline-offset:4px; color:#111; margin-top:26px; }\n  .auf-img { max-width:100%; height:auto; border-radius:8px; display:block; margin:18px auto; }\n  .auf-cap { font-size:14px; color:#555; text-align:center; margin:-8px 0 18px; }\n  .auf-note { background:#fff4e5; border:1px solid #f0c36d; border-left:4px solid #c62828; padding:12px 16px; margin:16px 0; border-radius:0 8px 8px 0; font-size:15px; }\n  .auf-glance { background:#fbf6f4; border-left:4px solid #8a1f12; padding:16px 20px; margin:20px 0; border-radius:0 8px 8px 0; }\n  .auf-glance p { margin:0 0 8px; }\n  .auf-glance .auf-glance-title { font-weight:700; font-size:18px; margin-bottom:10px; }\n  .cart-specs { width:100%; border-collapse:collapse; margin:16px 0; font-family:Arial,sans-serif; }\n  .cart-specs th { background:#8a1f12; color:#fff; padding:10px 12px; text-align:left; width:36%; font-size:15px; vertical-align:top; }\n  .cart-specs td { border-bottom:1px solid #ddd; padding:10px 12px; font-size:15px; vertical-align:top; }\n  .auf-video { max-width:560px; margin:14px auto 6px; }\n  .auf-video iframe { width:100%; aspect-ratio:16\/9; height:auto; border:0; border-radius:8px; }\n  @media (max-width:1024px) { img[style*=\"max-width:70%\"] { max-width:100% !important; } }\n  details[style*=\"border-bottom\"] \u003e summary { list-style:none; cursor:pointer; }\n  details[style*=\"border-bottom\"] \u003e summary::-webkit-details-marker { display:none; }\n  details[style*=\"border-bottom\"] \u003e summary::after { content:none; }\n  details[style*=\"border-bottom\"] \u003e summary:hover { background:#eef1f5 !important; }\n  details[style*=\"border-bottom\"][open] .pin-arrow { transform:rotate(180deg); }\n\u003c\/style\u003e\n\n\u003ch6\u003eDescription\u003c\/h6\u003e\n\n\u003cp\u003eHairline cracks on a brick pizza oven are not a defect. Every handmade refractory cement dome moves a little as it heats and cools, and after the first season most ovens show fine lines on the dome and along the seam where the brick face meets the stucco. The Ultra Fire crack repair kit is the patch Authentic Pizza Ovens makes for exactly that, and it is the same tub they pack inside every brick oven they ship. This listing is for owners who used theirs, lost it, or never got one with an oven bought elsewhere.\u003c\/p\u003e\n\u003cp\u003eIt is a silicone based, paint consistency patch made in Portugal for the outside of refractory cement ovens. Brush it into the crack while the oven is warm, feather the edge, and it cures with the dome. It also covers chips on the concrete base from delivery or moving. It is never used inside the oven or on any cooking surface.\u003c\/p\u003e\n\u003cdiv class=\"auf-glance\"\u003e\n\u003cp class=\"auf-glance-title\"\u003eUltra Fire kit at a glance\u003c\/p\u003e\n\u003cp\u003eExterior crack patch for refractory cement and brick pizza ovens; the same kit included with every Authentic Pizza Ovens brick oven\u003c\/p\u003e\n\u003cp\u003eAbout a half quart tub, enough for one oven across several seasons; reseals for later coats\u003c\/p\u003e\n\u003cp\u003eApply warm, outside only: dome, stucco, brick face seam and concrete base; never inside the cooking chamber or on anything food touches\u003c\/p\u003e\n\u003cp\u003eHairline cracks only; a wider crack gets high heat mortar first, then Ultra Fire over the top to seal it\u003c\/p\u003e\n\u003cp\u003eMade in Portugal, limited stock\u003c\/p\u003e\n\u003cp\u003e$55; add it to an oven order and it rides free. Questions on your crack or your oven: see the FAQ tab below or use the chat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg class=\"auf-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0695\/7760\/5375\/files\/apo-ultra-fire-crack-repair-kit-tin-and-brush.webp?v=1794079345\" alt=\"Authentic Pizza Ovens Ultra Fire crack repair kit tin with a brush, made in Portugal for brick pizza oven domes\" width=\"800\" height=\"717\" loading=\"lazy\" style=\"max-width:70%;height:auto;display:block;margin:18px auto;\"\u003e\n\u003cp class=\"auf-cap\"\u003eThe Ultra Fire tub as it ships from Authentic Pizza Ovens, made in Portugal.\u003c\/p\u003e\n\n\u003ch2 class=\"auf-h2\"\u003eWhy Brick Ovens Crack, and Why It Does Not Matter\u003c\/h2\u003e\n\u003cp\u003eA refractory cement dome is cast by hand over fire brick and a thick layer of rock wool insulation. When you fire it, the inner brick reaches several hundred degrees while the outer cement stays cool enough to touch. That difference is the whole point of the insulation, and it is also why the outer skin shows fine cracks: the two layers expand at different rates. The brick and insulation do the cooking. The cement is weather skin. A hairline crack on the skin does not change heat up time, floor temperature, or how long the oven holds heat.\u003c\/p\u003e\n\u003cp\u003eWhat the crack does do is let rain in if it is left open through a wet season, which is why the oven cover and a patched dome go together. Curing the oven properly on five small fires before the first pizza keeps cracking to a minimum; skipping the cure and lighting a roaring fire on day one is what turns a hairline into a visible line.\u003c\/p\u003e\n\n\u003ch2 class=\"auf-h2\"\u003eUsing Ultra Fire\u003c\/h2\u003e\n\u003cp\u003eFire the oven for an hour so the dome is warm, not blazing. Brush the dust out of the crack with a dry paintbrush. Stir the tub, then work the patch into the crack with a small brush or a putty knife and smooth it flush with the surrounding surface. Let it set before the next full fire. Some ovens keep settling through the first season; if a line reopens, add a second thin coat. The tub holds about a half quart and ships looking part empty, which is normal. Seal the lid tight after use and store it cool so it does not skin over.\u003c\/p\u003e\n\u003cp\u003eUltra Fire goes on the dome, the stucco, the seam at the brick face, and the concrete base. It does not go on the fire brick floor, the inside of the chamber, the ceramic dish, or anything that touches food. Ultra Fire is made for hairline cracks. For a wider crack or a chip with depth, fill it first with a high heat mortar, let that dry fully, then brush Ultra Fire over the top to seal the surface and blend it in. A broken brick is a mortar repair on its own.\u003c\/p\u003e\n\u003cdiv class=\"auf-video\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/3d2Dth9MKmA\" title=\"How to repair cracks with Ultra Fire\" loading=\"lazy\" allow=\"accelerometer; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp class=\"auf-cap\"\u003eThe patch going on a warm dome. The same tub is packed inside every Authentic Pizza Ovens brick oven.\u003c\/p\u003e\n\n\u003ch2 class=\"auf-h2\"\u003eWho Should Buy and Who Should Not\u003c\/h2\u003e\n\u003cp\u003eBuy it if you own a refractory cement brick oven, from Authentic Pizza Ovens or another Portuguese maker, and want the dome sealed and tidy. Buy it if the tub that came with your oven dried out or went missing. Skip it if your oven is steel or stainless with no cement dome; there is nothing for it to patch. Skip it for interior damage, which needs mortar.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eBest way to buy: add this to your \u003ca href=\"\/collections\/authentic-pizza-ovens\" style=\"color:#8B1A0A; font-weight:bold; text-decoration:underline;\"\u003epizza oven\u003c\/a\u003e order. Orders over $750 ship free.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch6\u003eKEY FEATURES\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eExterior crack patch made for refractory cement wood fired ovens\u003c\/li\u003e\n\u003cli\u003eSilicone based, paint consistency, brushes into hairline cracks\u003c\/li\u003e\n\u003cli\u003eSame kit Authentic Pizza Ovens packs with every brick oven\u003c\/li\u003e\n\u003cli\u003eCovers dome cracks, brick face seams, and chips on the concrete base\u003c\/li\u003e\n\u003cli\u003eAbout a half quart per tub; reseals for later coats\u003c\/li\u003e\n\u003cli\u003eApply while the oven is warm so it cures with the dome\u003c\/li\u003e\n\u003cli\u003eOutside use only; never inside the chamber or on cooking surfaces\u003c\/li\u003e\n\u003cli\u003eHairline cracks only; wider cracks get high heat mortar first, then Ultra Fire to seal\u003c\/li\u003e\n\u003cli\u003eMade in Portugal, limited availability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eSPECIFICATIONS\u003c\/h6\u003e\n\u003ctable class=\"cart-specs\"\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eAuthentic Pizza Ovens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eULTRAFIRE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eExterior patch for refractory cement ovens, silicone based, paint consistency\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003eAbout a half quart (tub ships larger than its contents)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse on\u003c\/th\u003e\n\u003ctd\u003eDome, stucco finish, brick face seam, concrete base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNot for\u003c\/th\u003e\n\u003ctd\u003eInside the oven, fire brick floor, cooking surfaces; wide cracks are filled with high heat mortar first, then sealed with Ultra Fire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eOven warm, crack brushed clean, patch worked in and feathered, set before next full fire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eLid sealed tight, cool place\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eEvery Authentic Pizza Ovens brick oven and other refractory cement domes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003ePortugal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShips from\u003c\/th\u003e\n\u003ctd\u003eThe brand's Texas warehouse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch6\u003eVIDEO\u003c\/h6\u003e\n\u003cp\u003eThe application video is in the Using Ultra Fire section above. Here it is again for reference.\u003c\/p\u003e\n\u003cdiv class=\"auf-video\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/3d2Dth9MKmA\" title=\"How to repair cracks with Ultra Fire\" loading=\"lazy\" allow=\"accelerometer; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp class=\"auf-cap\"\u003eFilling hairline cracks on a warm dome with the Ultra Fire kit.\u003c\/p\u003e\n\n\u003ch6\u003eINSTALLATION GUIDE \u0026amp; USER MANUAL\u003c\/h6\u003e\n\u003cp\u003e\u003cstrong\u003eBefore the first patch.\u003c\/strong\u003e Cure a new oven first. Five small fires over five days, each a little hotter than the last, let the dome dry and settle before full heat. Most cracking shows up during or just after the cure, so wait until the cure is done and the oven has had a few real fires before you patch; patching too early means patching twice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplying.\u003c\/strong\u003e Warm the oven about an hour. Brush the crack clean. Stir the tub. Brush or knife the patch into the line, flush with the surface, and feather the edge. Let it set before the next full fire.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAfter.\u003c\/strong\u003e Cover the oven once it is cool. Check the dome at the start of each season and touch up any new lines. Keep the tub sealed and cool between uses.\u003c\/p\u003e\n\n\u003ch6\u003eWARRANTY INFORMATION\u003c\/h6\u003e\n\u003cp\u003eUltra Fire is a consumable and carries no separate warranty. Hairline cracks on a refractory cement dome are normal and are not covered under the oven's structural warranty; the oven warranty covers the structure, not surface lines. Patching with Ultra Fire does not affect the oven warranty. Once opened the kit is not returnable.\u003c\/p\u003e\n\n\u003ch6\u003eFREQUENTLY ASKED QUESTIONS - FAQ'S\u003c\/h6\u003e\n\u003ccenter\u003e\u003ch2 id=\"faqs\"\u003e\u003cspan style=\"text-decoration: underline; color: #c62828;\"\u003eFrequently Asked Questions (FAQs)\u003c\/span\u003e\u003c\/h2\u003e\u003c\/center\u003e\n\u003ch3 style=\"color: #2c3e50; margin-top: 0; text-align: center;\"\u003eYour Questions Answered Before You Buy\u003c\/h3\u003e\n\u003cp\u003eThe questions owners ask most about the Ultra Fire kit before they order. If yours is not here, the chat goes to the owner and a real answer typically comes the same day.\u003c\/p\u003e\n\n\u003cdiv style=\"width: 100%; margin: 30px 0; font-family: Arial,sans-serif; border: 1px solid #ddd; border-radius: 12px; overflow: hidden; box-shadow: 0 4px 12px rgba(0,0,0,0.1);\"\u003e\n\n\u003cdetails style=\"border-bottom: 1px solid #eee; padding: 5px 0;\"\u003e\n\u003csummary style=\"padding: 18px 20px; cursor: pointer; background: #f8f9fa; font-weight: 600; font-size: 16px; color: #2c3e50; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s ease;\"\u003e\u003cspan\u003e🍕 Is it normal for my brick oven to crack?\u003c\/span\u003e \u003cspan class=\"pin-arrow\" style=\"font-size: 20px; transition: transform 0.3s ease;\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 20px; background: white; line-height: 1.6; color: #333;\"\u003eYes. Every handmade refractory cement oven develops hairline cracks on the dome and where the brick face meets the dome, especially after the first hot fires. Authentic Pizza Ovens packs this same Ultra Fire kit with every brick oven for that reason. The cracks are surface only and do not change how the oven cooks or holds heat, so patching is about appearance and keeping water out, not performance.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border-bottom: 1px solid #eee; padding: 5px 0;\"\u003e\n\u003csummary style=\"padding: 18px 20px; cursor: pointer; background: #f8f9fa; font-weight: 600; font-size: 16px; color: #2c3e50; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s ease;\"\u003e\u003cspan\u003e🍕 Where can I use Ultra Fire, and where should I not?\u003c\/span\u003e \u003cspan class=\"pin-arrow\" style=\"font-size: 20px; transition: transform 0.3s ease;\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 20px; background: white; line-height: 1.6; color: #333;\"\u003eUse it on the outside of the oven only: the dome, the stucco finish, the seam at the brick face, and chips on the concrete base. Never use it inside the cooking chamber, on the floor bricks, or on anything food touches. It is a surface sealer for hairline cracks, not a filler. A wider crack gets high heat mortar first, allowed to dry, then Ultra Fire over the top to seal and blend it.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border-bottom: 1px solid #eee; padding: 5px 0;\"\u003e\n\u003csummary style=\"padding: 18px 20px; cursor: pointer; background: #f8f9fa; font-weight: 600; font-size: 16px; color: #2c3e50; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s ease;\"\u003e\u003cspan\u003e🍕 How do I apply it?\u003c\/span\u003e \u003cspan class=\"pin-arrow\" style=\"font-size: 20px; transition: transform 0.3s ease;\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 20px; background: white; line-height: 1.6; color: #333;\"\u003eFire the oven so the dome is warm, brush loose dust out of the crack, then work the Ultra Fire in with a small brush or putty knife and feather the edges. APO recommends applying it while the oven is warm so it cures with the surface. Let it set before the next full fire. If the crack reopens after a few more fires, which is common in the first season, add a second thin coat.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border-bottom: 1px solid #eee; padding: 5px 0;\"\u003e\n\u003csummary style=\"padding: 18px 20px; cursor: pointer; background: #f8f9fa; font-weight: 600; font-size: 16px; color: #2c3e50; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s ease;\"\u003e\u003cspan\u003e🍕 Will it match the color of my oven?\u003c\/span\u003e \u003cspan class=\"pin-arrow\" style=\"font-size: 20px; transition: transform 0.3s ease;\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 20px; background: white; line-height: 1.6; color: #333;\"\u003eIt dries to a light finish that blends with the standard white and gray stucco domes. On a painted or tinted dome it will show until you touch up the paint over it. On the Rustic brick and Stone Finish facades you use it on the dome and base only, not on the brick or stone work.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border-bottom: 1px solid #eee; padding: 5px 0;\"\u003e\n\u003csummary style=\"padding: 18px 20px; cursor: pointer; background: #f8f9fa; font-weight: 600; font-size: 16px; color: #2c3e50; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s ease;\"\u003e\u003cspan\u003e🍕 How much is in the kit and how far does it go?\u003c\/span\u003e \u003cspan class=\"pin-arrow\" style=\"font-size: 20px; transition: transform 0.3s ease;\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 20px; background: white; line-height: 1.6; color: #333;\"\u003eThe tub holds about a half quart, enough for the hairline cracks on one oven several times over. The tub ships larger than its contents, so it looks part empty when opened; that is normal. Seal the lid tight after each use and keep it in a cool place so it does not dry out. Unused product keeps for later seasons.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border-bottom: 1px solid #eee; padding: 5px 0;\"\u003e\n\u003csummary style=\"padding: 18px 20px; cursor: pointer; background: #f8f9fa; font-weight: 600; font-size: 16px; color: #2c3e50; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s ease;\"\u003e\u003cspan\u003e🍕 Does Ultra Fire ship free?\u003c\/span\u003e \u003cspan class=\"pin-arrow\" style=\"font-size: 20px; transition: transform 0.3s ease;\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 20px; background: white; line-height: 1.6; color: #333;\"\u003eIt ships free on the same order as an oven. On its own it is a small parcel and the checkout shows the rate for your address. Orders over $750 ship free. Covers, chimney parts and this kit are sold for a specific oven, so if you are not sure yours is a refractory cement oven, ask before you order.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Authentic Pizza Ovens","offers":[{"title":"Default Title","offer_id":50953153151231,"sku":"ULTRAFIRE","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0695\/7760\/5375\/files\/apo-ultra-fire-crack-repair-kit-tin-and-brush.webp?v=1794079345","url":"https:\/\/crustifypizzaovens.com\/products\/authentic-pizza-ovens-ultra-fire-crack-repair-kit","provider":"Crustify Pizza Ovens","version":"1.0","type":"link"}