The best liquid rubbers, compared.
Top pick: Trustleaf prevulcanised liquid latex, 1 litre – Highest score: about £15.07, 4.6 from 123 reviews, for brush-built effects. The 1 litre title conflicts with a 280 g item weight. Best value: Gorilla Waterproof Coat & Seal, 473 ml – Same 90 as the 946 ml tin, at about £19.30, with a confirmed 473 ml fill and gutter on the surface line. Updated 22 October 2026.
Liquid rubber on a UK search is not one chemistry. The phrase covers a cold-applied waterproof coating, a platinum mould silicone, a natural-rubber latex, and a brush-on electrical paste. Most people who type liquid rubber want a coating for a gutter, a shed, or a small patch of flat roof. You tell a suitable tin by the job. A roof or gutter coating should state coverage, the substrates it accepts, and a temperature window. Trade sheets in this category often sit near 1 litre per square metre, so a 1 litre tin is a local patch, not a garage roof. Match the liquid to the surface. Felt, GRP, metal, concrete and a plastic gutter are not the same job, and several roof coatings refuse plastic gutters, ponds and indoor tanking. A gap coating is for a narrow joint, a 1:1 silicone cures a mould, and latex is for masks and effects. An electrical paste needs a stated voltage before you treat it as insulation. The [liquid rubber buying guide](/hub/fillers-adhesives-and-sprays/liquid-rubber/sub/liquid-rubber-buying-guide) separates those four liquids before you compare pack size.
Liquid rubber on a UK search is not one chemistry. The phrase covers a cold-applied waterproof coating, a platinum mould silicone, a natural-rubber latex, and a brush-on electrical paste.
38 products checked · 61 hrs invested · +24,600 readers
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Personal buying guide
Question 1 of 2
What are you trying to do?
Trustleaf’s prevulcanised liquid latex is listed at about £15.07 with a 1 litre title, a brush in the box, and 4.6 from 123 amazon.co.uk reviews, which is the highest score in this set. UK buyers brush several neat coats for Halloween texture, skulls and simple moulds, then thicken later coats, and some speed the dry with a hair dryer on low. The body is thinner than many expected, closer to single cream than a heavy rubber, and one build of four brushed coats plus a pour still took about three days. Smell is a repeated complaint, and one buyer did not like it for mask making. The item weight is 280 g against the litre title, so the fill is not a single confirmed number. It is natural-rubber latex, and the listing has no allergy warning even though latex proteins can cause dermatitis, asthma or anaphylaxis. It is the top pick here for brush-built effects at this price, not for a gutter or a shed roof.
Pros
Cons
Best for: You are brushing masks, casts or special-effects texture in several coats and you have no latex allergy.
Less suitable: A roof or gutter, a one-coat job, or anyone who reacts to latex.
Specifications
Common questions
What is Trustleaf liquid latex for?
The title and the recommended-use line say moulds, masks, casts and special effects. Reviews use it for Halloween texture and brush-built moulds. It is not described as a roof or gutter coating.
Does a brush come with it?
Included components lists a brush. Reviewers talk about several neat coats, then a thickener on fiddly work. One build of four coats plus a pour still took about three days.
Why is the weight 280 g?
The package size name says 1 litre and the item weight is 280 g. Both figures are on the listing, so the fill is not a single confirmed number.
The black 473 ml Gorilla tin is listed at about £19.30, with gutter on the surface line and PVC and rubber as the compatible materials. The amazon.co.uk line is 4.5 from 2,378 reviews, and that block is the same opening sample as the 946 ml listing, including comments that describe a transparent coat. Reviewers who used a brush report a gutter leak, a bird-bath crack or a thin concrete split stopping, often after about 24 hours, though a thick coat drips and one wardrobe joint needed a few days. The liquid is sticky on skin, ruins a brush, and skins in the tin if the lid is left loose. This listing does not repeat the large-area ban that sits on the 946 ml listing, so a garage roof is still the wrong reading of a 560 g tin. It is the best value in this set when you want a confirmed small black tin and you will ignore clear-coat sentences in the shared reviews.
Pros
Cons
Best for: You want a small black patch on a gutter or a similar PVC joint and you will treat 473 ml as a local repair.
Less suitable: A whole garage roof, a flashing, or a buy driven by a review that describes a clear coat.
Specifications
Common questions
Is this the small Gorilla liquid rubber tin?
Yes. The title is 473 ml, the unit count is 473 ml, and the weight is 560 g. The colour field is black. It is the best value in this set for a confirmed small black tin.
What surface does the listing name?
The surface recommendation is gutter. The style name is Liquid Rubber. A longer exclusion list is not on this listing. The 946 ml page bars large areas, flashing, pressurised pipes and a firebox.
Do the reviews match this black tin?
The listing shares its opening reviews and the 2,378 count with the 946 ml ASIN. Some of those reviews describe a transparent coat. This tin is black.
Gorilla’s black 946 ml tin is about £30.20, and the bullets name gutters, downpipes, windows, uPVC, external chimneys and small caravan repairs. The same page says the liquid is for local use and is not designed for large areas, flashing, pipes under pressure or the inside of a firebox. Across the shared 2,378 reviews the score is 4.5, and several of those texts praise a clear finish that this black tin is not. A brush-on patch is often dry in about 24 hours, while a thick layer drips and stays tacky, and reviewers mention how easily it gets under nails. One review kept a Velux skirt dry for a year, which does not cancel the flashing exclusion on the listing. At 1.08 kg it covers more joints than the 473 ml tin, still inside that local-repair limit.
Pros
Cons
Best for: You have several local gutter, uPVC or small caravan repairs that will not fit in 473 ml, and none of them is a full roof.
Less suitable: A whole roof, a flashing, a pipe under pressure, or the inside of a firebox.
Specifications
Common questions
Can this coat a whole garage roof?
The listing says it is for localised use and is not designed to coat large areas. It also says it may not work on every plastic or rubber. Gorilla’s UK page limits this liquid to gaps up to 6 mm.
Will it do a gutter or a small caravan repair?
The bullets name gutters, downpipes, windows and uPVC, external chimneys, and small repairs on caravans. Flashing and pipes under pressure are excluded.
How much is in the tin?
The title and the unit count both say 946 ml. The item weight is 1.08 kg. It is about £10.90 more than the 473 ml tin for the same star line.
STARTSO WORLD’s jade-green 20A platinum silicone is about £24.29 for about 38 oz (1.37 kg on the weight line), mixed 1:1 by volume, with 4.5 from 741 reviews. The seller quotes a 4–6 hour release at 23 °C and a full cure around 12 hours, and one detailed review had a pour that set in about 6 hours with enough working time to fill texture. Buyers report fine detail on a coin, narrow wax channels and nylon 3D-printed parts, with a low odour compared with solvent coatings. It stayed liquid against a rubber master and against double-sided tape after 48 hours, and tiny bubbles remain even though the seller says you do not need a vacuum chamber. A loose inner seal on part A spilled for at least one buyer, and a grippy surface at 6 hours needed a wash or more time. Food-grade wording is the seller’s line only: the listing has no declaration under assimilated Regulation 1935/2004, and the URL ASIN B0CWV2TLYM does not match the specification-block ASIN B0CWV152N4.
Pros
Cons
Best for: You are pouring a 20A mould for resin, wax, plaster or soap and the master is not sulphur clay, latex or another silicone.
Less suitable: A roof leak, a food mould you would trust on a food-grade adjective, or a room you cannot hold near 23 °C.
Specifications
Common questions
How do you mix STARTSO WORLD silicone?
The seller says 1:1 by volume. A review mixed 50/50 by weight or volume and poured slowly around the master. The seller quotes a 4–6 hour release at 23 °C.
Is it food safe?
The seller says food grade for sweets and similar. There is no food-contact declaration under assimilated Regulation 1935/2004 on the listing. One reviewer washed the mould and waited longer before chocolate.
Which ASIN is this page?
The product URL is B0CWV2TLYM. The specification block prints B0CWV152N4. Treat that as a listing conflict, not as two confirmed products.
Nakutita’s Taba kit is about £17.99 and packs 250 g of part A with 250 g of part B, six animal moulds, flocking, eyes, colour pastes, cups, gloves and sticks, which is why the item weight is 840 g rather than 500 g of silicone alone. It is 4.4 from 47 reviews, and only six of the headers in the review sample are United Kingdom. UK buyers describe a mix, pour and demould that children managed with an adult nearby, and flocking cut the stickiness once the powder had gone everywhere. The seller says 1–2 hours at room temperature on a 1:1 mix; a non-UK review said drying took a long time, and another could not release parts cleanly. Silicone sticks in the cups, so they are disposable. The non-toxic bullet is not a food-contact document, and nothing on the page describes a roof or a gutter.
Pros
Cons
Best for: You want a supervised craft session for soft squishy toys in the moulds that come in the box.
Less suitable: A waterproof roof, a food mould, or a pour larger than 500 g of silicone.
Specifications
Common questions
Is the Nakutita kit only the liquid?
No. The bullet lists 250 g of part A, 250 g of part B, six moulds, flocking, eyes, colour pastes, cups, gloves and sticks. The item weight is 840 g because of that kit, not 500 g of silicone alone.
How long does the seller say it takes to cure?
The bullet says 1–2 hours at room temperature on a 1:1 mix. A non-UK review said drying took a long time. Another buyer could not release parts cleanly.
Is it a children's kit?
Reviews describe children using it with adult supervision. The seller calls it non-toxic. There is no food-contact document under assimilated Regulation 1935/2004.
OunTechGlory’s black paste is about £8.99, titled 50 ml, while the unit count says 5.0 metre, so the fill is not one clear figure. It scores 4.2 from 57 amazon.co.uk reviews. UK buyers used it on outdoor wiring, a window-seal gap, LED solder joints, a low-power laser connection and scuffed charging-cable jackets, and some said the dry film bent like rubber. Others found it runny, very slow, lumpy, brittle, or already cured in the tube, and one review said it was not safe and not flexible. No voltage, dielectric strength or British Standard number is on the listing. A paste with no volts-per-mil figure is not a repair for a cut 230 V sheath, particularly when other buyers were still waiting for it to leave the tacky stage.
Pros
Cons
Best for: You want a small outer coat on a low-voltage lead or a non-electrical gap and you can discard a tube that arrives hard.
Less suitable: A cut mains sheath, a roof, or a joint you cannot also sleeve with proper tape.
Specifications
Common questions
What did buyers use the paste on?
UK reviews mention outdoor wiring, a window-seal gap, LED solder joints, a low-power laser connection and charging-cable jackets. Some say the dry film bends. Others say it dried brittle or fell off.
Does it stay flexible?
Some reviews say it feels like rubber and bends. Others say it dried brittle, did not stick, and fell off, or that it cured in the tube. Treat a hard tube as a failed buy.
Is a voltage rating stated?
No voltage, dielectric strength or British Standard number is on the listing. The unit count says 5.0 metre against a 50 ml title. It is not a documented repair for a cut 230 V sheath.
WYCOON’s translucent mould silicone is about £22.94, with 15A and a 1:1 mix in the seller bullets and a stated 4–6 hour cure at 23 °C. The title says 1.1 kg while the item weight is 1.36 kg, and the amazon.co.uk line is 4.2 from 48 reviews. Buyers who got a cure moulded household objects and an uneven artefact, then cast epoxy, and one noted a low bubble count and bottles that opened on a ring-pull. Three mixes from another buyer never set, and a separate review had to cut the mould because it would not flex off the original. A UK reviewer could not hold 23 °C in a winter flat and quoted a warning against curing under 18 °C. The seller’s non-toxic line is not a food-contact document, so this is a small-sample translucent kit for a warm room, not a leak coating.
Pros
Cons
Best for: You want a translucent mould for resin, candle or soap in a room you can keep near 23 °C.
Less suitable: A winter flat below 18 °C, a food mould, or any waterproofing job.
Specifications
Common questions
What hardness does the seller state?
The bullet says 15A, mixed 1:1 by volume, with a typical 4–6 hour cure at 23 °C. The title says 1.1 kg and the item weight is 1.36 kg.
Will it set in a cool UK room?
A reviewer says the instructions advise against curing under 18 °C and that 23 °C was hard to hold in winter. Another buyer had three mixes that did not set.
Is it flexible enough to demould?
The title says super elastic. One reviewer had to cut the mould to release the piece and called it not flexible. Successful moulds of household objects are also in the reviews.
BBDINO’s Shore 00-30 silicone is about £38.97 for 1 kg and scores 4.1 from 177 reviews, with only three United Kingdom headers in the review sample. It mixes by hand into a very soft, stretchy, skin-like rubber that reviewers use for dolls and flesh props, and one thin mould that was allowed to slump gave a deeper resin cast. That softness is also the complaint: a wall that must hold shape flops, and the surface stays tacky enough to mark whatever it sits on. It does not cure cleanly against RTV silicone moulds, and reviewers who tried food moulds said the hardness is wrong. The title says translucent, the colour field says black, and one review describes a cool blue translucency. You are paying the highest price in this set for a flesh analogue, not for a stiff production mould or a roof film.
Pros
Cons
Best for: You are making masks, dolls or a flesh prop and you can accept slump and a tacky surface.
Less suitable: A production mould, a food mould, or a roof or gutter repair.
Specifications
Common questions
Is this a mould rubber for resin production?
A UK reviewer says it is a flesh analogue and not really for moulds. Another found a thin mould slumped, which helped one deep cast and would hurt a mould that must hold shape.
How soft is Shore 00-30?
The title and model say 00-30. Reviews call it very soft, stretchy and, in some reports, tacky on the surface. It is the highest price in this set.
Which colour is it?
The title says translucent. The colour field says black. A review describes a cool blue translucent look. Treat the colour as unresolved on the listing.
Tapel’s white 1 litre tin is a polyurethane coating at about £19.99, 4.0 from 459 amazon.co.uk reviews, sold for leaks on metal, wood and concrete indoors and out. Buyers who liked it brushed a dry log shed, stopped a van-roof leak, or sealed a fountain in three coats, and one floor-board job before a shower tray had little odour. Others found the tub watery or settled, needed about four coats on a camper roof, or still had a leak after several coats, and a flex test on wood cracked the dried film. A pool-floor coat lifted and floated once the pool was filled, so standing water is a failure already in the reviews. The bullets name ASTM G154 and EN 1504-2 with no certificate attached, and the page says both damp bonding and dry-for-better-bonding. The application tip is 10 °C or above, and 1 litre is a patch, not a 5 m² shed at a trade rate of about 1 litre per square metre.
Pros
Cons
Best for: You want a white patch of about 1 m² on metal, wood or concrete and you can add coats if the film looks thin.
Less suitable: A ponding roof, a swimming pool, or a job that needs a thick rubber film from a single litre.
Specifications
Common questions
Is this a thick rubber paint?
The material field says polyurethane. Reviews split: some brushed it onto a shed or van, others called it thin and watery, more like gloss than a heavy rubber. At about 1 litre per square metre, 1 litre is a patch.
Can it go on indoors?
The highlight says indoor and outdoor use on metal, wood and concrete. One review used it on floor boards before a shower tray and reported little odour. Damp-surface and dry-surface lines both appear.
Does the listing prove an EN 1504-2 test?
The bullets claim ASTM G154 and EN 1504-2. The listing has no certificate, so those stay seller claims. This page does not score them as a pass.
Jingyukj sells two 25 ml bottles of liquid latex at about £5.99 for fake wounds, scars, cosplay and face or body art, and the colour variant is clear. The saved listing has no customer-review line and no review text, so the score is 0 and you have the title to go on. The unit count is 50 g and the item weight is 60 g, a small pack next to a litre-titled tub. Skin contact is the job printed on the title, and the listing still carries no latex-allergy warning. It is not described as a roof coating, a gutter sealer or a mould rubber. At this price you are buying an unreviewed costume sample, which is a poor substitute for a tin that has already been brushed onto a leak.
Pros
Cons
Best for: You already know you tolerate latex and you want a tiny costume or scar trial.
Less suitable: Any roof, gutter or mould job, or a first latex buy with no patch test.
Specifications
Common questions
What job is this latex for?
The title and highlight say fake wounds, scars, cosplay, Halloween and face or body art. It is not described as a roof coating, a gutter sealer or a mould rubber.
How is it rated?
The saved listing has no customer-review line and no review text, so the star count is not known. The score is 0. Do not treat the price as evidence that it works.
How much is in the pack?
The title says 2 × 25 ml. The unit count is 50 g and the item weight is 60 g. It is a small costume sample next to a litre-titled tub.
Tesorzg’s black liquid electrical tape is about £9.99 at 40 g, with a unit count of 1.0 metre and no millilitre volume on the listing. There is no star line and no review text in the saved listing, so the score is 0. The bullets name cable repair, marine and automotive coats and say fast dry, without an hour, and the included-components field is none. Listing questions on dry time, wet surfaces and food contact are asked and not answered in the specification block. No voltage or dielectric figure is printed, which is the same gap as the other paste and a reason not to treat the bottle as mains insulation. At about £1 more than a reviewed 50 ml paste, you are paying for an unreviewed label rather than a measured coat.
Pros
Cons
Best for: You already accept an unreviewed paste for a non-mains experiment and you do not need a cure time in hours.
Less suitable: Mains insulation, food-contact surfaces, or any roof or gutter waterproofing.
Specifications
Common questions
How much liquid is in the bottle?
The listing gives item weight 40 g and a unit count of 1.0 metre. It does not give millilitres. The bottle size is listed as 40 × 130 × 40 mm.
Is it for mains cable?
The highlight says an insulating coat for cable repair. No voltage rating is printed on the listing. Do not treat it as a repair for a cut 230 V sheath.
Are there reviews?
The saved listing has no customer-review line and no review text, so the score is 0. Dry time, wet application and food contact are asked on the listing and left unanswered.
Eleven amazon.co.uk listings were scored on 19 October 2026. The number on each row is the star rating multiplied by 20. A listing with no review line scores 0. Review count does not add points. Shared review text between the two black gap tins is noted in the assessments, not by splitting the star line. The top pick is the highest score. Best value is the confirmed 473 ml black gap tin at the same 90 as the dearer twin, with a stated fill and the large shared review count. The higher-scoring latex does not take that badge, because a 1 litre title conflicts with a 280 g item weight. The cheapest paste is not best value: it has no voltage figure. A seller bullet that names EN 1504-2, ASTM G154, a 10-year life or food grade is not scored as a certificate. The weights below are the checks used to write the assessments. They are not a second total. This is not a laboratory test.
Amazon star line
50%The row score is the amazon.co.uk star rating multiplied by 20. No review line scores 0. Review count does not add points, and a shared review pool is not split.
Chemistry for the job
20%A waterproof coating, a mould silicone, a latex and an electrical paste are different liquids. A mould kit is not scored as a roof repair.
Pack against the title
15%Title fill is checked against unit count and item weight. A 1 litre title against 280 g blocks the best-value badge.
Stated limits
15%Large-area bans, flashing exclusions, a missing voltage figure and a food-grade line with no UK food-contact declaration stay as limits, not as certificates.
Read the chemistry before the star line. Liquid rubber on a UK search is a waterproof coating, a mould silicone, a latex or an electrical paste. Coverage, substrate, fall and cure decide a roof tin. A food-grade adjective and a named standard without a certificate do not.
Liquid rubber on amazon.co.uk is four liquids under one phrase: a cold-applied waterproof coating, a platinum mould silicone, a natural-rubber latex, and a brush-on electrical paste. UK searchers mostly want the coating. A mould kit does not stop a leak, and a costume latex is not a gutter sealer. Quality for a roof or gutter is a stated coverage, a substrate list, and a temperature window.
A 1:1 platinum silicone cures a mould. It does not stop a gutter or a shed roof. Shore 00 is skin-soft and will not hold a wall that must keep its shape.
At about 1 litre per square metre, a 1 litre tin is about 1 m². Gorilla’s UK liquid is for gaps up to 6 mm and is not designed for large areas, flashing or pipes under pressure.
EN 1504-2, ASTM G154, a 10-year life and a food-grade line stay seller claims unless the listing carries the document. An unrated paste is not a 230 V repair.
Match the liquid to the job before you read the star line. A cold-applied roof coating, a local gap coating, a 1:1 platinum silicone, prevulcanised latex and an electrical paste do not substitute for each other. Trade sheets used here sit near 1 litre per square metre, so a 1 litre Amazon tin is a patch and a 5 litre trade tin is about 5 m² before a second coat on a porous deck. That trade tin is not in this set.
Match felt, GRP, metal, uPVC or a plastic gutter to the sheet. Several roof rubbers refuse plastic gutters, new bitumen, new lead, ponds and indoor tanking. Skyguard also bars balconies and indoor use, with a flash point of 35 °C and VOC up to 499 g/L. BS 6229:2025 keeps a finished fall of about 1:80 on most flat roofs and does not accept backfalls. A coating does not create that fall. Call a roofer if the roof ponds, the deck is soft, or the job is a flashing.
Three typical situations, each with a recommendation from this comparison.
You want a small black patch on a gutter or a similar PVC joint, and you will treat the tin as a local repair. Gorilla Waterproof Coat & Seal, 473 ml, is the best value at about £19.30, 4.5 from 2,378 reviews, with gutter on the surface line. The reviews are shared with the larger tin and include clear-coat comments.
You are brushing masks, casts or special-effects texture in several coats, and you have no latex allergy. Trustleaf prevulcanised liquid latex is the top pick at about £15.07, 4.6 from 123 reviews, with a brush in the box. The body is thin, and the 1 litre title does not match the 280 g item weight.
You are pouring a Shore 20A mould and the master is not sulphur clay, latex or another silicone. STARTSO WORLD platinum mould silicone is about £24.29, 4.5 from 741 reviews, mixed 1:1. It is not a roof coating, and the food-grade line is not a UK food-contact declaration.
The top pick is Trustleaf prevulcanised liquid latex at about £15.07: 4.6 from 123 amazon.co.uk reviews, the highest score in this set, for brush-built masks and effects. The body is thin, reviews mention the smell, and the item weight is 280 g against a 1 litre title. It is not a gutter coating. The best value is Gorilla Waterproof Coat & Seal in black, 473 ml, at about £19.30, the same 4.5 from 2,378 reviews as the 946 ml tin, with gutter on the surface line. Those reviews are shared and include clear-coat comments. A mould silicone, a costume latex and an unrated electrical paste do not stop a roof leak.
Trustleaf prevulcanised liquid latex, 1 litre
Highest score: about £15.07, 4.6 from 123 reviews, for brush-built effects. The 1 litre title conflicts with a 280 g item weight.
Gorilla Waterproof Coat & Seal, 473 ml
Same 90 as the 946 ml tin, at about £19.30, with a confirmed 473 ml fill and gutter on the surface line.
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.
Expert source (DIY & tools): Charlie White (Charlie DIYte) (external profile) – public expert commentary used as a research source, not as a contributor to our pages.
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.
