The best firebricks, compared.
Top pick: Fireclay bricks, pack of 6, stated 1300°C Best value: Fireclay bricks, pack of 6, stated 1300°C – Dense pack with agreeing size lines, a printed 9 kg weight, and more than 40 reviews, at about £25.19. Updated 22.10.2026.
Firebricks here are either lightweight vermiculite boards used as stove liners, or dense fireclay bricks used where you want thermal mass, such as a pizza-oven floor, a fire pit, or some open fires. A modern log burner usually needs the same material and thickness as the panel you are removing, most often a buff vermiculite board about 25 mm thick, not a heavier clay brick with a higher degree number on the label. Measure width, height, and thickness in millimetres before you order, because several amazon.co.uk listings disagree with their own specification lines. The title says vermiculite and the material attribute says ceramic. See the [firebricks buying guide](/hub/fireplaces-and-stoves/firebricks/sub/firebricks-buying-guide). Dense fireclay stores more heat and resists knocks. It is alumina clay or dense fireclay stated at 1300°C, sold in fours, sixes, tens, and twelves for pizza ovens, fire pits, and repairs. Vitcas states the two materials are not direct substitutes. A shaped manufacturer set is a third route when the baffle is not a rectangle. That is a different purchase from these plain packs, and it sits nearer a [fire brick comparison](/hub/fireplaces-and-stoves/fire-brick) than a ten-pack of rectangles. Fire blankets, jewellery soldering mats, and thin ceramic-fibre sheets are not firebricks.
Firebricks here are either lightweight vermiculite boards used as stove liners, or dense fireclay bricks used where you want thermal mass, such as a pizza-oven floor, a fire pit, or some open fires.
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Personal buying guide
Question 1 of 2
What are you lining?
Six alumina-clay bricks from The Stove Wizard are listed at £25.19, titled 230 × 114 × 25 mm, with a pack weight of 9 kg and a stated 1300°C. The amazon.co.uk line is 4.8 from 48 reviews, and those reviews mention a wood stove, a log burner cut to size, an open-fire back, a pizza oven, and a fire pit. A reviewer found them heavier than earlier firebricks, which fits a dense pack rather than a vermiculite board. The bullets name pizza ovens, BBQs, fire pits, and refractory repairs, and they tell you to confirm the size before you order. The size lines on this listing agree. It is the best value pick when you want dense clay with reviews that name those jobs, and a mismatch if your stove manual specifies vermiculite.
Pros
Cons
Best for: You need dense 230 × 114 × 25 mm clay for a repair, a fire pit, or a thin oven bed, and you want reviews that name those uses.
Less suitable: Your manual specifies vermiculite, or you need a 64 mm cooking floor.
Specifications
Common questions
Are these clay rather than vermiculite?
The material line says alumina clay, the title says fire clay bricks, and the listing weight is 9 kg for six. A reviewer found them heavier than earlier firebricks they had bought.
Does the listing include pizza ovens and fire pits?
Yes. The bullets name pizza ovens, BBQs, fire pits, and refractory repairs, and they tell you to confirm 230 × 114 × 25 mm before you order.
Have buyers used them in a stove?
Reviews mention a wood stove, a log burner cut to size, an open-fire back, a pizza oven, and a fire pit. The listing does not say they are a shaped baffle set.
Across 439 amazon.co.uk reviews at 4.7, buyers cut this ten-pack to fit log burners, including a Villager, from boards titled 230 × 114 × 25 mm. The shelf price in this capture is £28.00, the listing weight is 4.92 kg, and the bullets rate the boards to 1100°C for wood, gas, or multifuel stoves. Reviewers describe ordinary tools and a fragile board, and more than one parcel arrived with damaged corners. The title says vermiculite while the material attribute on the same page says ceramic, so the listing is not a single material certificate. One buyer says the bricks do not stick without cement and used cement on a small forge; cement is not in the pack. It is the top pick here because the review count is much larger than the rest, and a poor default if you need a shaped baffle or a page whose material lines agree.
Pros
Cons
Best for: You are relining a stove that already uses a plain rectangle near 230 × 114 × 25 mm and you want the largest review count in this set.
Less suitable: You need a shaped baffle, a listing whose material lines agree, or a dense cooking floor.
Specifications
Common questions
Are these vermiculite or ceramic?
The title calls them vermiculite firebricks. The material attribute on the same listing says ceramic, and the bullets rate them to 1100°C. The listing does not resolve that clash.
Can they be cut to fit a stove?
Buyers report cutting and shaping them for log burners, including a Villager, with ordinary tools. They also describe the boards as fragile, and more than one parcel arrived with damaged corners.
Do they stick together on their own?
One reviewer says the bricks do not adhere without cement and used a cement for a small forge. The listing does not include cement.
The Stove Wizard six-pack is listed at £24.49 with 4.7 from 90 reviews, and the seller says these vermiculite boards cut with woodworking tools to about ±2–3 mm. The title and model name say 230 × 114 × 25 mm, while the part number says 200 × 90 × 25 mm, so the page does not tell you which rectangle will arrive. A reviewer who expected heavy ceramic bricks says that is not what came, which matches the 3 kg pack weight. Buyers report sawing them for log burners, and one who used a wet tile cutter says the boards soaked up water and had to be dried. Country of origin is listed as the United Kingdom, and the stated temperature is 1200°C. The price sits near the ten-pack, though the size clash is the reason not to treat it as the best-value liner.
Pros
Cons
Best for: You have measured the old board and will check what arrives against both printed sizes.
Less suitable: You need one agreed size on the listing, or a dense fireclay floor.
Specifications
Common questions
Which size will arrive?
The title and model name say 230 × 114 × 25 mm. The size line and the manufacturer part number say 200 × 90 × 25 mm. Measure the brick you are replacing before you rely on either line.
Are these heavy fireclay bricks?
The listing material is vermiculite, and a reviewer who expected heavy ceramic bricks says that is not what arrived. The pack weight on the listing is 3 kg.
Can they be sawn to fit a wood burner?
The seller says they can be cut with normal woodworking tools, with a tolerance of about ±2–3 mm. Reviewers report sawing them for log burners. One buyer who used a wet tile cutter says the boards soaked up water and had to be dried.
Four dense fireclay bricks are listed at £19.99, titled 230 × 114 × 25 mm and stated at 1300°C, with country of origin China. The star line says 4.7 from 12, and the stored UK reviews are a reptile basking platform and a note about gas furnaces. Those same two texts appear on the ten-pack and the twelve-pack, so the rating is not three separate trials. The bullets name pizza ovens, BBQs, fire pits, and refractory repairs, and they tell you to check the size. The listing asks whether the bricks are safe for cooking and does not answer. There is no weight on the page. It is the smallest clay pack in the set, and the stored reviews do not describe a pizza oven or a stove.
Pros
Cons
Best for: You already know you need four plain 230 × 114 × 25 mm clay rectangles and you are not using the star line as proof of cooking use.
Less suitable: You want review evidence of a pizza oven or a stove, or a vermiculite liner.
Specifications
Common questions
What is this pack for, on the listing?
The bullets name dense fireclay for pizza ovens, BBQs, fire pits, and refractory repairs, at 230 × 114 × 25 mm, and they tell you to check that size before you buy.
Does the listing say the bricks are safe for food?
The listing asks whether they are safe for cooking. It does not answer. Do not treat the charcoal or grilling attribute lines as a food-contact claim.
How many UK reviews are stored with the listing?
The star line says 4.7 from 12. Two UK reviews are stored with the listing, about a reptile basking platform and a gas furnace. The same two texts appear on the ten-pack and the twelve-pack.
Ten dense fireclay bricks are listed at £32.99, titled 230 × 114 × 25 mm and stated at 1300°C, with country of origin China. The included-components line says 10 clay bricks and the dimension line is 25 × 114 × 230 mm, so the axes match even though the order of the numbers changes. The 4.7 from 12 star line sits on the same two UK texts as the four-pack: a reptile platform and gas-furnace spares, not a pizza oven and not a stove. The page asks whether the bricks are safe for cooking and does not answer. You pay more than the £25.19 six-pack, which does have oven and pit comments in its reviews, for a larger count and a thinner set of stored reviews. There is no printed weight.
Pros
Cons
Best for: You have counted ten plain clay rectangles of this size and you will not treat the shared star line as a test.
Less suitable: You want the six-pack that reviewers actually used on an oven or a pit, or any vermiculite stove board.
Specifications
Common questions
How many bricks are in the pack?
The title and the included-components line say 10 clay bricks, each stated as 230 × 114 × 25 mm. The dimension line is 25 × 114 × 230 mm.
Does the listing answer whether they are safe for cooking?
It asks the question. The listing has no answer, so food contact stays unknown from this page.
What do the reviews on the listing cover?
Two UK reviews: one used the bricks as a reptile basking platform, and one mentions replacement in gas furnaces. Neither describes a pizza oven or a stove.
Twelve dense fireclay bricks are £38.99, the largest pack in this set, titled 230 × 114 × 25 mm and stated at 1300°C, with country of origin China. The star line is again 4.7 from 12, and the stored UK texts are the same reptile-platform and gas-furnace notes as on the four-pack and the ten-pack. The listing asks if the bricks are safe for food and does not answer. There is no weight and no food-contact certificate in the listing extract. The bullets do name pizza ovens, BBQs, fire pits, and repairs, and they tell you to confirm 230 × 114 × 25 mm. It is a quantity buy only if you have already decided you need twelve rectangles of that size. The star line is not evidence that anyone has cooked on them.
Pros
Cons
Best for: You have a measured job that uses twelve plain 25 mm clay rectangles and you already accept the missing food-safety answer.
Less suitable: You are choosing by stars, you need a vermiculite liner, or you wanted proof of food contact.
Specifications
Common questions
What quantity does the title state?
Pack of 12 dense fireclay bricks at 230 × 114 × 25 mm, stated at 1300°C, for pizza ovens, BBQs, fire pits, and refractory repairs.
Is there a food-safety answer on the listing?
The listing asks if it is safe for food. It does not answer. There is no food-contact certificate in the listing extract.
Are the 12 reviews written out with the listing?
The star line says 4.7 from 12. Two UK review texts are stored with the listing, the same reptile-platform and gas-furnace notes as on the four-pack and ten-pack.
This wider vermiculite panel is £14.98, listed at 1.23 kg, with 4.4 from 76 reviews. The title says 193 × 303 × 25 mm and the dimension line says 19.3 × 30.5 × 2.5 cm, so one width is 303 mm and the other is 305 mm. Reviews mention a log burner and a Stockton 7 inset. One buyer scored it to size with a knife, using the old brick as a template, and another cut a rear rebate. The title says 1200°C and a feature line says up to 1250 degrees; both figures are seller text, not a test in this comparison. The seller allows about ±2–3 mm when you cut it. It suits a measured panel of about that face, and it is the wrong spare if the stove takes a 230 × 114 mm brick.
Pros
Cons
Best for: You measured a panel near 193 × 303 mm and you can trim a small rebate yourself.
Less suitable: Your stove uses 230 × 114 mm bricks, or you need dense clay for an oven floor.
Specifications
Common questions
What are the dimensions?
The title says 193 × 303 × 25 mm. The dimension line says 19.3 × 30.5 × 2.5 cm, so the width figure is 305 mm rather than 303 mm. The listing weight is 1.23 kg.
Have buyers fitted it to a stove?
Reviews mention a log burner and a Stockton 7 inset. Another buyer scored it to size with a knife using the old brick as a template. One buyer needed a rear rebate and cut it.
Which temperature figure is on the listing?
The title says 1200°C. A special-features line says temperatures up to 1250 degrees. Both figures are seller text, not a test in this comparison.
This single Stove Wizard vermiculite board is £9.99, listed at 590 g, with 4.2 from 20 reviews and a stated 1200°C. The title says 230 × 114 × 25 mm, the size line says 230 × 115 × 25 mm, and the dimension line says 230 × 25 × 110 mm, beside a cutting tolerance of about ±2–3 mm. Several buyers fitted one in a stove. One says the board arrived broken into pieces even though the packaging was intact, and another found it thinner than expected. Country of origin is the United Kingdom. It is the cheapest single here if you are replacing one rectangle you have measured, and a weak buy if you wanted the same size printed three times.
Pros
Cons
Best for: You are replacing one plain board and you will measure what arrives before you cut it.
Less suitable: You want one undisputed size, a spare pack, or a dense clay brick.
Specifications
Common questions
What size is printed on the listing?
The title says 230 × 114 × 25 mm. The size line says 230 × 115 × 25 mm, and the dimension line says 230 × 25 × 110 mm. The seller also states a cutting tolerance of about ±2–3 mm.
Can it be cut?
The listing says the board can be cut and shaped with normal woodworking tools. Reviews describe it as light, and one buyer found it thinner than expected.
Does it always arrive in one piece?
Several buyers fitted it in a stove. One buyer says the board arrived broken into pieces even though the packaging was intact.
The longer Stove Wizard board is listed at £10.99 and 740 g, titled 305 × 115 × 25 mm, with a model line of 12 × 4.5 × 25 mm and a stated 1200°C. The star line is 4.0 from 38 reviews. A reviewer cut and filed it to replace a missing brick in a woodburning stove. One buyer who ordered 12 inch bricks received a mix of 9 inch and 12 inch pieces, so the title length is not a guarantee. The seller says it cuts with ordinary woodworking tools to about ±2–3 mm. Country of origin is the United Kingdom. Use it when you have measured a panel near 305 mm and can send back a short board. Skip it if the stove takes a 230 mm rectangle.
Pros
Cons
Best for: You measured a liner near 305 mm long and you will check the length before you fit it.
Less suitable: You need a 230 × 114 mm brick, or you cannot return a short board.
Specifications
Common questions
How long is this board?
The title says 305 × 115 × 25 mm. The model line says 12 × 4.5 × 25 mm, which is the same length in inches. One buyer ordered 12 inch bricks and received a mix of 9 inch and 12 inch pieces.
Can it be shaped for a stove?
The seller says it can be cut with normal woodworking tools. A reviewer cut and filed it to replace a missing brick in a woodburning stove.
Is the weight on the listing?
Yes. The listing weight is 740 g for one board.
Nine amazon.co.uk firebrick listings were scored on a 0–100 scale. Amazon evidence is 30 points, from the star line and the review count on that ASIN. A 4.7 from 439 scores higher than a 4.7 from 12, and a star line that sits on two shared review texts does not score like three separate reputations. Listing clarity is 25 points, for one material story, a pack count, a printed weight, and size lines that agree. Review outcome is 25 points, for UK themes such as a stove liner cut to size, a broken delivery, a wet cutter, a pizza oven, or a fire pit. Value is 20 points, from the shelf price against a size you can read and a review set that matches the job. The highest score is the top pick. Best value is the dense fireclay pack whose size lines agree, whose weight is printed, and which has more than 40 reviews. This is not a lab test. Prices are the amazon.co.uk shelf prices on 19 October 2026.
Amazon evidence
30%Star rating and review count on that ASIN. A 4.7 from 439 scores higher than a 4.7 from 12. A star line that sits on two shared review texts does not score like three separate reputations.
Listing clarity
25%One material story, a pack count, a weight if printed, and size lines that agree. A title that disagrees with the part number or the dimension line loses this block. A vermiculite title with a ceramic material attribute loses part of it.
Review outcome
25%UK themes in the stored reviews: a stove liner cut to size, a broken delivery, a wet cutter, a pizza oven, or a fire pit. Reviews about a reptile platform or a gas furnace do not score as oven-floor proof.
Value
20%Shelf price in GBP against a size you can read and a review set that matches the job. A lower price does not win this block when the size lines conflict or the reviews are copied across packs.
Match the material already in the appliance, then the thickness, then every size line on the listing. A plain rectangle replaces a plain rectangle. A shaped baffle is a different purchase. Prefer a review count that belongs to that pack, and treat a star line shared across three clay packs as one piece of evidence. A higher °C figure is not a reason to swap vermiculite for fireclay.
A firebrick in this comparison is either a lightweight vermiculite board or a dense fireclay brick. Vermiculite is the usual liner in a modern log burner: light, buff or beige, stated at 1100–1200°C on these listings, and cut with woodworking tools. Dense fireclay stores more heat and resists knocks. In this set it is alumina clay or dense fireclay stated at 1300°C, sold in fours, sixes, tens, and twelves for pizza ovens, fire pits, BBQs, and repairs.
Vermiculite and fireclay are both sold as firebricks. Vitcas states they are not direct substitutes. A higher °C figure on a clay brick is not a reason to fit it in a stove built around a vermiculite board.
One six-pack titled 230 × 114 × 25 mm also says 200 × 90 × 25 mm. One single titled 230 × 114 × 25 mm also shows a 110 mm dimension. Measure the old piece in millimetres before you order.
Water weakens vermiculite. One buyer who used a wet tile cutter says the boards soaked up water and had to be dried. Do not fire a damp board. Wear a mask if you cut without extraction.
Match the manual, or the panel you are removing. Vermiculite insulates and cuts with woodworking tools. On these listings it is a light buff or beige board, stated at 1100–1200°C, with pack weights such as 590 g, 740 g, 1.23 kg, 3 kg, and 4.92 kg. Dense fireclay stores more heat and resists knocks. The alumina-clay six-pack is listed at 9 kg and stated at 1300°C, and reviews mention a stove, a pizza oven, and a fire pit. Vitcas states the two are not direct substitutes.
Match thickness as well as face size. A common rectangle is about 230 × 114 × 25 mm. A 25 mm board in a 30 mm rebate will not sit as the stove was built. Read every size line, not only the title. The Stove Wizard vermiculite six-pack is titled 230 × 114 × 25 mm and the part number says 200 × 90 × 25 mm, so it is not the best-value liner while that clash stands. The £9.99 single prints 114 mm, 115 mm, and 110 mm on different lines.
Three typical situations, each with a recommendation from this comparison.
You are replacing a cracked liner and you need the original material and a measured rectangle. The Hongyong ten-pack is the top pick when the old piece is about 230 × 114 × 25 mm: 4.7 from 439 reviews at about £28.00. The title says vermiculite and the material attribute says ceramic. Skip it if you need a shaped baffle.
You want dense fireclay and a cement that cures outdoors. The Stove Wizard six-pack is the best value at about £25.19: alumina clay, 230 × 114 × 25 mm, listing weight 9 kg, 4.8 from 48 reviews that mention a stove, a pizza oven, and a fire pit. It is the wrong liner if the manual specifies vermiculite.
You can use either material if you accept fragility and you bring your own joint. One buyer of the Hongyong ten-pack says the bricks do not stick without cement and used cement on a small forge. Cement is not in the pack. A dense clay brick resists knocks better when the job is not a vermiculite stove liner.
The top pick is the Hongyong ten-pack at about £28.00. It is titled 230 × 114 × 25 mm, listed at 4.92 kg, with 4.7 from 439 reviews, and the size lines agree. The title says vermiculite and the material attribute says ceramic, and buyers describe fragile boards and damaged corners. The best value is The Stove Wizard alumina-clay six-pack at about £25.19: 4.8 from 48 reviews, a printed weight of 9 kg, agreeing size lines, and reviews that mention a stove, a pizza oven, and a fire pit. It is the wrong liner if the manual specifies vermiculite. No listing here is a lab test or a HETAS approval.
Fireclay bricks, pack of 6, stated 1300°C
Dense pack with agreeing size lines, a printed 9 kg weight, and more than 40 reviews, at about £25.19.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources used for this comparison. amazon.co.uk prices, stars and review counts were taken from the listings on 19 October 2026.
This page contains affiliate links to amazon.co.uk (tag pcuk26-21). If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are from the listings. This is not a laboratory test.
