4.8/5 stars based on 550+ reviews

Product details

Description

Insulate your steel-framed home—without staples, screws, or stress. 🔩❄️

Installing underfloor insulation with steel joists can be a major headache—standard staples won’t work, and drilling into metal is slow, messy, and risks damaging your insulation. That’s why we developed Joisties, the smarter, tool-free solution for securing insulation batts between steel joists quickly, cleanly, and confidently.

Joisties are spring-loaded fasteners that use pressure and precision to grip insulation firmly in place—no adhesives, no drills, no fiddling. They create a secure hold that stops insulation from sagging or shifting over time, ensuring long-lasting thermal and acoustic performance under your floor.

Perfect for DIYers, tradies, and retrofit professionals, Joisties are reusable, durable, and tailored to the unique challenges of steel-framed construction.

✅ Designed specifically for steel joists—no staples needed

✅ Prevents sagging and movement of insulation batts

Fast, clean, and repeatable—great for pros and first-timers alike

Reusable and long-lasting—a cost-effective solution that’s built to last

Steel joists don’t have to slow you down.

Install insulation with confidence—and skip the compromise—with Joisties.

At a glance

  • Typical Coverage: 9.0m2

  • Cost m2:

  • Dimensions:

  • Minimum Packs per Order: 1

Load video:

Perfect for

🔹 Keeping Your Home Comfy – Helps keep your house warm in winter and cool in summer

🔹 Saving Money – Stops heat and cool from escaping, so you don’t need to use your heater or air conditioner as much

🔹 Soft and Safe – Made from soft, non-itchy polyester insulation that won’t cause allergies

🔹 Long-Lasting Protection – Strong and stays in place. Guaranteed to work for you for 70 years

Frequently Asked Questions

Can I insulate my floor if I have steel joists instead of timber?

Yes—you absolutely can! That’s what Joisties were made for. Traditional underfloor insulation is tricky with steel joists because you can’t staple into them. Joisties are a clever, system that deals with the thermal bridge from steel joists holds insulation batts firmly in place—no drilling or frustration.

Do I need any special tools to install insulation with Joisties?

Not really—just your standard DIY gear and a Joisties Fitting Tool, which helps you align and install the Joisties easily. Once they’re in, you simply slide the insulation batts into place. It’s a smart, DIY-friendly solution for steel-framed homes.

Is underfloor insulation really worth the effort?

Yes! Up to 20% of your home’s heat can escape through the floor. Underfloor insulation helps keep you warmer in winter, cooler in summer, and significantly reduces your heating and cooling costs. It’s one of the smartest upgrades you can make—especially when you’ve got the right tools to make it easy.

What You'll Love

100% Polyester

Made out of 100% recyclable polyester

80% recycled plastic bottles

Made up to 80% recycled plastic bottles

Non toxic, non itchy

Not toxic, non itchy, non allergenic, formaldehyde-free

No chemicals or glues

Heat-bonded. No binding chemicals or glues

Rodent resistant 

Rats don't like to chew on it. Snug install ensures a rodent-free experience

Not impacted by water or mould

Water doesn't affect polyester. No mould issues

Fire rating NCC compliant

Fire compliant and safe

Maintains its loft

Maintains its thickness, will not collapse

Staples securely

Staples securely between joists. Suitable for variable width joists

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What difference does it actually make?

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