Our readers keep the lights on and my morning glass full of iced black tea. As an Amazon Associate, I earn from qualifying purchases.
Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
That first scratch or chip in your tub feels like a disaster — you either live with an ugly mark or pay a pro hundreds of dollars to fix it. A solid bathtub repair kit bridges that gap: you mix a two-part epoxy, spread it over the damage, let it cure, and sand it smooth, all without calling a contractor. The real trick is knowing which kit actually bonds to your tub’s material and dries to a color you can live with.
I’m Min — the founder and writer behind Gadgets Feed. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Whether you are fixing a chip from a dropped shampoo bottle or a crack in a fiberglass shower stall, picking the right bathtub repair kit depends on how much repair material you get, how accurately the color matches your fixture, and how long you are willing to wait for the epoxy to fully cure.
Quick Picks
- NNRepair Bathtub Repair Kit (8g of Repair Material) — Precision Pick
- Hupeyna Fiberglass Repair Kit (8 Colors) — Most Versatile
- Devcon Epoxy Bathtub Repair Kit (Almond & White) 2 Pack — Smart Value
- Tub Repair Kit White (Globalcom) — Budget Champion
- Tub and Fiberglass Shower Repair Kit White (FENFANDAS) — Color Match Expert
How To Choose The Best Bathtub Repair Kit
A bathtub repair kit is a simple two-part epoxy, but the small differences between kits decide whether your repair looks invisible or calls attention to itself. Here are the three things that matter most.
Repair material volume
Kits range from 8 grams to nearly 9 ounces of putty or liquid epoxy. If you are filling a single nick the size of a pea, a smaller volume works fine. Fixing a long crack or several chips across a shower floor needs the larger tubes so you do not run out mid-job. Check the weight listed in the specs before you buy.
Color-matching system
Most kits cure to a standard white, but your tub might be almond, biscuit, or a cream shade that is off-white. Kits that include separate dye pigments let you tweak the shade, but every reviewer warns that the color straight out of the tube rarely matches on the first try — you almost always need to mix small test batches and let them dry to see the true hue.
Full cure time
The epoxy feels hard to the touch after a few hours, but the manufacturer’s stated cure time is the real wait before the repair becomes fully waterproof and sandable. Rushing this step is a common mistake.
Quick Comparison
On smaller screens, swipe sideways to see the full table.
| Model | Best For | Repair Material Weight | Color Options | Full Cure Time | Amazon |
|---|---|---|---|---|---|
| NNRepair Bathtub Repair Kit | Small precision chips | 1.13 oz | White + dye | See manufacturer instructions | Amazon |
| Hupeyna Fiberglass Repair Kit | Larger repairs + color mixing | 8.8 oz (250 g) | 8 colors | 24 hours | Amazon |
| Devcon Epoxy Bathtub Repair Kit 2‑Pack | Quick small fixes with included patch | 1.06 oz | Almond & White | 4-5 min working time | Amazon |
| Tub Repair Kit White (Globalcom) | Budget-friendly all-around tub repair | 7 oz | White only | 12 hours | Amazon |
| Tub and Fiberglass Shower Repair Kit (FENFANDAS) | Low-moisture area touch-ups | 8.4 oz | White + 10+ shades | 24 hours | Amazon |
In‑Depth Reviews
1. NNRepair Bathtub Repair Kit (8g of Repair Material)
The surgeon-level kit for precise, small repairs.
This is the lightest kit in the roundup at 1.13 ounces versus the 8.4-ounce FENFANDAS kit, but it is designed for precision, not volume. The 8 grams of repair material come in a controlled dual-syringe that dispenses equal parts automatically, so you do not have to guess the 1:1 ratio. Buyers report repairing two granite chips (1/4″x1/8″ and 1/4″ diameter) from cast iron pan hits in about 15 minutes total, including sanding and polishing.
The kit includes polishing paste, sandpapers, micro-tips, leveling tape, and an application stick — everything lives in a compact box measuring 6.69 x 1.97 x 0.98 inches versus the 0.95 x 1.5 x 4.5-inch Globalcom kit. One owner mentioned the repair was “virtually invisible” after using clear epoxy without dye, though the strong smell means you need good ventilation. The catch is the small material volume: if you have a crack longer than a couple of inches, you will likely run out and need a second kit.
The case for it: The dual-syringe mixing removes the biggest source of error (wrong epoxy ratio), and the small format is well suited to precise chip repairs.
The downside: At only 8 grams of material, it is strictly for small chips and nicks. A single large gouge or multiple repairs across the tub will exhaust the tube before you finish.
Best for: Fixing a single small chip or nick with a near-invisible finish.
Skip if: You need to fill a long crack, multiple chips, or a hole bigger than a pea — the material volume is too small for larger jobs.
2. Hupeyna Fiberglass Repair Kit (8 Colors)
The heavy-lift kit that colors outside the white-only lines.
At 250 grams (about 8.8 ounces), this is the largest volume kit in the lineup — more than enough to repair a chunky floor tile or multiple dings across a shower tray. Unlike most competitors that offer only white or a single almond shade, Hupeyna includes eight separate dye colors (white, black, yellow, light yellow, red, blue, coffee, green) that you can mix to match nearly any tub or tile. The paste comes in part A and part B that you blend at a 1:1 ratio, and the manufacturer says it takes a full 24 hours to cure into a waterproof, heat-resistant surface that handles daily temperature changes without cracking.
One buyer used this kit to repair a large ceramic floor tile that had a chunk busted out of it and reported the fix was so good that “if I didn’t show you the repair, you’d never see it.” The trade-off is the cure time: 24 hours is the longest wait in this roundup, and one reviewer noted that in high humidity it can stretch to 48 hours. Also, the dye containers have sealed nipples that need piercing — one buyer’s first vial top flew off, causing a spill.
Why it’s great
- Largest repair material volume (250 g) gives you enough for multiple repairs or one big patch.
- Eight color pigments let you mix custom shades — far more flexible than a single white epoxy.
Good to know
- Full cure takes a full 24 hours (or 48 in humid conditions), so plan around not using the tub for a day.
- Dye vials must be pierced carefully — one reviewer lost an entire vial when the cap popped off.
Best for: Anyone repairing a larger area or needing to match a non-white tub color using the included pigment mixing system.
Skip if: You need a same-day repair — the 24-hour cure is too long for a quick fix.
3. Devcon Epoxy Bathtub Repair Kit (Almond & White) 2 Pack
Two tubes in one box for the price of one single kit.
Devcon gives you two individual repair kits in one purchase — each 1.06 ounces — which means you can keep one in the garage and one under the sink, or use the first to practice color matching before tackling the visible repair. The kit includes a fiberglass patch for holes that need structural backing, plus pigment for matching either white or almond/bisque fixtures. The epoxy is water-resistant once cured, making it safe for wet areas like shower stalls and spa tubs.
Owners mention that the working time is only about 4-5 minutes before the goop thickens, so you need everything laid out and ready before you start mixing. One owner described it as “slightly runny” for the first 3 minutes, which can cause drips on vertical surfaces. On the upside, a reviewer said the instructions were clear and the color match was “almost flawless” after sanding with a power sander — the wife could not see where a 1/4-inch hole had been. The main durability note from longer-term users: the epoxy can yellow over time, though one buyer shrugged it off by saying “the tub was a turd in need of polishing anyway.”
The case for it: Two kits for the price of one gives you a backup tube for mistakes or a second repair, and the included fiberglass patch is unique here for bridging actual holes.
One limitation: The extremely short working time (4-5 minutes) and runny initial consistency make it tricky on vertical surfaces — expect to need sanding to smooth out globs.
Best for: Getting two shots at the repair (or fixing two separate spots) with a kit that includes fiberglass cloth for holes rather than just chips.
Skip if: Your repair is on a wall or vertical surface — the runny epoxy will drip before it thickens enough to stay put.
4. Tub Repair Kit White (Globalcom)
A no-frills white epoxy that delivers consistent results for less.
This 7-ounce kit from Globalcom is the entry-level workhorse that focuses on one job: filling chips, cracks, and holes in white tubs and sinks. You mix the two parts at a 1:1 ratio, let it cure for 12 hours, and it hardens into a waterproof surface that customers note “spreads like thick frosting, sticks well, dries to match standard white sinks.” The tiny package — just 0.95 x 1.5 x 4.5 inches — feels almost too small for 7 ounces of material, but reviewers consistently mention there is plenty leftover after a single repair.
One buyer used the whole tube to repair a gouge in a large white floor tile, then sanded the overage flat and smooth “as marble” with nice results. The main limitation is that the kit only comes in white — there is no pigment for matching cream, almond, or bone shades. Several reviewers dinged it a star for that reason, with one saying it “did not match the white of my tub but close enough.” If your bathroom fixture is a pure glossy white, this is the most cost-effective option; if it tilts toward warm white or off-white, the color mismatch will be visible.
Why it’s great
- 7 ounces of material at a budget price — plenty for multiple repairs or one large fill.
- 12-hour cure is faster than the 24-hour kits, so you can use the tub the same evening.
Good to know
- White-only formula — no dye pigments included, so it only matches pure white fixtures.
- Several buyers noted the white is slightly off from their specific tub shade; test on a hidden spot first.
Best for: Fixing chips and cracks in a standard white fiberglass or porcelain tub without needing color matching.
Skip if: Your tub is almond, biscuit, bone, or any warm off-white shade — the single white epoxy will stand out.
5. Tub and Fiberglass Shower Repair Kit White (FENFANDAS)
The heavy tube that tries hardest to disappear into your tub.
With 8.4 ounces of material, this is the heaviest kit in the roundup by total weight, and it comes with a color palette that covers white, arctic, cream, biscuit, almond, linen, bone, hourglass, ice gray, cashmere, thunder gray, and black. The manufacturer says the repair should be “without traces,” but real buyer experiences are mixed: one reviewer who applied 4 coats achieved a close color match after letting each coat dry the full 24 hours, while another reported the epoxy “dries bright canary yellow” and shrinks upon drying, making dents more visible.
One owner used it to fill holes from a shower door installation and said it “dried quickly, blended really well,” though cleanup was tough if you did not wipe excess before it hardened. The box is a compact cube (2.11 x 2.1 x 2.1 inches) despite the 8.4-ounce weight. The honest catch: even with all those color options, matching a specific off-white fixture still takes careful test-mixing and patience.
The case for it: The broadest color-matching range of any kit here — 10-plus shades including warm tones like biscuit and almond that other kits cannot touch without separate dye.
The compromise: One reviewer reported yellowing and shrinkage, and cleanup is difficult if you let excess dry.
Best for: Homeowners with a non-white tub (almond, biscuit, bone) who want a single kit that includes a built-in color palette rather than mixing dyes.
Skip if: You need a fast repair and do not want to spend time test-mixing colors.
Understanding the Specs
Repair material weight
This is the total amount of epoxy or putty in the kit, usually listed in ounces or grams. A 1-ounce kit (about 28 grams) is enough for a single small chip or nick. An 8-ounce kit can fill multiple chips, a crack a few inches long, or even a gouge in a floor tile. If you weigh the box in your hand, lighter kits (around 1 ounce) are meant for precision touch-ups; heavier ones (7-9 ounces) are for jobs where you expect to use most of the tube.
Full cure time
This is the number of hours the manufacturer says the epoxy needs to reach its maximum hardness and become fully waterproof. A 12-hour cure means you can sand and use the tub the same day. A 24-hour cure means you need to keep the area dry overnight. If you sand or wet the patch before the full cure, the repair may soften, yellow, or peel off.
FAQ
Will a bathtub repair kit work on a cast iron tub?
How long does a bathtub repair kit last after curing?
Can I use a bathtub repair kit on a shower floor or wall tile?
Do I need to sand the repair after it hardens?
What does 1:1 ratio mean in a repair kit?
Why did my repair turn yellow?
Can I paint over a bathtub repair?
How do I remove excess epoxy if it drips onto the tub surface?
Is the repair waterproof immediately after curing?
Does the kit work on a chip in a granite countertop?
Final Thoughts: The Verdict
For most buyers, the bathtub repair kit winner is the NNRepair Bathtub Repair Kit because its dual-syringe system removes the guesswork from mixing and its small format suits precise repairs. If you want the largest material volume and the most color flexibility for big or multi-color repairs, grab the Hupeyna Fiberglass Repair Kit. And for a budget-friendly white-tub fix with a faster 12-hour cure, the standout is the Tub Repair Kit White.
How We Picked
We do not accept paid placement, and we did not hands-on test every unit. Instead, we match each pick to a real buyer and use-case by comparing the manufacturers’ published specifications against the patterns in verified customer reviews — so you get each pick’s real strengths and trade-offs instead of marketing copy.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Gadgets Feed earns from qualifying purchases. This does not affect which products we feature.