Sofia Torres
Verified
★★★★★ Perfect for my leaky shed roof
Fixed three different leak spots on the corrugated iron. Still holding strong after winter storms.
1 week ago
Nzmarket Waterproof Flexible Insulating Sealant – All Materials
Regular price
$49.99 NZD
Sale price
$49.99 NZD
Regular price
$99.99 NZD
Unit price per
In Stock — Ships in 24–48 h | Price includes GST
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BUNDLE & SAVE
✓ Discount applied automatically at checkout — mix & match any items.
Nzmarket Waterproof Flexible Insulating Sealant – All Materials
Regular price
$49.99 NZD
Sale price
$49.99 NZD
Regular price
$99.99 NZD
Unit price per
Stop leaks, seal gaps, and waterproof any surface permanently with SealPro™ Waterproof Insulating Sealant. This professional-grade flexible sealant bonds to virtually any material — metal, wood, glass, plastic, concrete, and tile — creating a durable, watertight seal that flexes without cracking.
- Bonds to metal, wood, glass, plastic, concrete & tile
- Flexible seal — won’t crack with movement
- Fully waterproof and weatherproof
- Indoor and outdoor use
- Fast-setting, long-lasting protection
WHAT CUSTOMERS SAY
Customer Reviews
4.6/5
★★★★☆ From 27 reviews
Vanessa Taufete'e
Verified
★★★★☆ Good product but messy application
Works well on concrete cracks but the tube nozzle could be better designed. Gets a bit messy when you're trying to do neat lines.
2 weeks ago
Nadia Stewart
Verified
★★★★★ Bonds to everything
Used it on plastic, metal and timber. Sticks to all of it no worries.
3 weeks ago
Anthony Haami
Verified
★★★★★ Saved my bathroom tiles
Sealed around the shower base where the old silicone had failed. Completely waterproof now and flexible enough it doesn't crack when the house moves.
4 weeks ago
Tane Maori
Verified
★★★★☆ Does the job well
Great for outdoor repairs. Only downside is it takes longer to set than I expected, especially in humid weather.
1 month ago
Lisa Park
Verified
★★★★★ Fixed my guttering permanently
No more drips!
2 months ago
Rob Mitchell
Verified
★★★☆☆ Okay but not amazing
It works but I've used better sealants. The consistency is a bit thick and hard to squeeze out smoothly.
2 months ago
Grace Tuala
Verified
★★★★★ Excellent for glass repairs
Sealed a crack in my greenhouse glass perfectly. Completely invisible once dried and hasn't budged in months.
2 months ago
James Brown
Verified
★★★★★ Professional results
Used the 300g tube for multiple jobs around the house. Bonds incredibly well to concrete and stays flexible even in our climate.
3 months ago
Kelly Wong
Verified
★★★★☆ Good sealant, awkward tube
The sealant itself is brilliant but I found the tube hard to control for precise application. Ended up using more than needed.
3 months ago
Peter Johnson
Verified
★★★★★ Fixed my deck permanently
Sealed gaps between deck boards and the house. Three years on and still perfect - no water getting through.
4 months ago
Kavya Hutchinson
Verified
★★★★★ Weatherproof and reliable
Used on outdoor plumbing connections and it's held up through two winters without any issues.
4 months ago
Tony Smith
Verified
★★★★★ Great for boat repairs
Sealed around my boat's fittings and it's stayed watertight through some rough conditions.
4 months ago
Rachel Lee
Verified
★★★★☆ Works well but smells strong
Does exactly what it says on the tube. Only issue is the chemical smell - make sure you've got good ventilation when applying.
5 months ago
Chris Taylor
Verified
★★★★★ Flexible and durable
Perfect for sealing around windows. Moves with the building settling and doesn't crack like rigid fillers do.
5 months ago
Helen Kumar
Verified
★★★★★ Actually waterproof
Finally found a sealant that genuinely keeps water out. Applied around bathroom fixtures and haven't had a leak since.
6 months ago
Mark Davis
Verified
★★★★★ Bonds to tile perfectly
Used it to seal tile edges in the kitchen backsplash. Clean application and completely watertight seal.
6 months ago
Sophie Clark
Verified
★★★☆☆ Average performance
It's okay but nothing special. Takes quite a while to fully cure and the 30g tube runs out fast on bigger jobs.
7 months ago
Ben Wilson
Verified
★★★★★ Saved my concrete driveway
Had cracks letting water underneath. This stuff filled them completely and they're still sealed two seasons later.
7 months ago
Anna Rodriguez
Verified
★★★★★ Perfect for metal repairs
Sealed joins on my steel fence. No rust issues since application.
8 months ago
Steve Phillips
Verified
★★★★☆ Good product, messy cleanup
Works brilliantly once applied but cleanup is a pain. Make sure you've got solvent handy for tools and fingers.
8 months ago
Linda Jackson
Verified
★★★★★ Indoor and outdoor champion
Used it inside on pipes and outside on gutters. Performs equally well in both situations and the flexibility means no cracking.
9 months ago
Alex Thompson
Verified
★★★★★ 300g tube is perfect size
Got the bigger tube and it lasted for several different projects around the property. Great value and consistent quality.
9 months ago
Jenny White
Verified
★★★★★ Fast setting
Sets up quickly enough that you don't have to hold everything in place forever. Still gives you time to work with it though.
10 months ago
Carl Peterson
Verified
★★★★☆ Works but instructions unclear
The sealant does exactly what it's supposed to but the application instructions on the tube could be clearer about surface prep.
10 months ago
Michelle Adams
Verified
★★★★★ Sticks to plastic brilliantly
Had trouble finding something that would bond to my plastic garden tanks. This did the trick immediately and hasn't failed.
11 months ago
Sunita Clarke
Verified
★★★★★ Long lasting protection
Applied it to various outdoor joints three years ago and it's still going strong despite our harsh UV and weather.
11 months ago
SHOP WITH CONFIDENCE
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About NZ Market
We create thoughtfully designed products that bring comfort, warmth, and everyday joy. Our focus is on quality, soft aesthetics, and gentle details made to feel cozy, safe, and timeless. Every product is crafted with care to blend beautifully into your home while adding a sense of calm and happiness to daily life.