Discover the Power of 25mm Kingspan TP10: Your Go-To Insulation for Pitched Roofs

Posted on October 10, 2025 by the Insulation Warehouse Direct Team

Hello, insulation enthusiasts and savvy builders! If you're knee-deep in a roof renovation or planning a new build, you know that choosing the right insulation isn't just about ticking boxes—it's about future-proofing your home for energy efficiency, comfort, and that all-important peace of mind. At Insulation Warehouse Direct, we're passionate about delivering top-tier products that make your projects smoother and more sustainable. Today, we're shining a spotlight on one of our stars: the 25mm Kingspan Thermapitch TP10 PIR Insulation Board. Whether you're a DIY hero or a seasoned contractor, this little powerhouse is set to transform how you approach pitched roof insulation.

What Makes Kingspan TP10 Tick?

Kingspan's Thermapitch TP10 is no ordinary insulation—it's a high-performance rigid thermoset polyisocyanurate (PIR) core wrapped in a low-emissivity foil facing that boosts thermal efficiency like a charm. Designed specifically for tiled or slated pitched roofs, this board is your versatile ally for both new constructions and retrofit jobs. At just 25mm thick, it slips seamlessly into tight spaces without compromising on performance, making it ideal for maintaining headroom while slashing heat loss.

Here's a quick spec rundown to get you up to speed:

What sets TP10 apart? It's engineered to resist sagging over time, ensuring your insulation stays put and performs consistently for years. Plus, it's easy to cut and handle, so installation is a breeze—no more wrestling with bulky materials!

Why Choose 25mm TP10 for Your Next Project?

Let's talk benefits, because that's where TP10 really struts its stuff. In a world where energy bills are climbing and eco-regulations are tightening, this board delivers on multiple fronts:

• Unbeatable Energy Savings: With its ultra-low thermal conductivity, TP10 minimizes heat escape through your roof, potentially cutting heating costs by up to 20-30% in a well-insulated setup. Imagine cozy winters and cooler summers without the hefty price tag—it's a win for your wallet and the planet.
• Versatile Applications: Perfect for pitched roofs, but don't sleep on its cousins in the Kingspan Therma range (like TW55 for walls or TF70 for floors). The 25mm option is slim enough for over-rafter or between-rafter installs, and it pairs beautifully with breathable membranes like Kingspan Nilvent for optimal ventilation.
• Durability and Longevity: No sagging, no settling—just reliable, long-term insulation that avoids thermal bridging and pattern staining on ceilings. It's BBA-certified and backed by Kingspan's rigorous testing, so you can trust it to meet building regs with ease.
• Eco-Friendly Edge: That zero ODP and low GWP blowing agent? It's Kingspan's nod to sustainability, helping you build greener without sacrificing performance. Your project will not only feel good but do good too.

We've seen TP10 in action on everything from cozy bungalows to sprawling extensions, and the feedback is glowing: faster installs, happier clients, and roofs that perform like champs.

Insider Tips: Installing 25mm Kingspan TP10 Like a Pro

Ready to roll it out? Here's our quick guide from the Insulation Warehouse Direct pros:

1. Prep Your Space: Ensure rafters are clean and dry. For over-rafter installs, lay TP10 directly over them, then secure with counter-battens (e.g., 38 x 38mm treated softwood) nailed through to the rafters.
2. Cut to Fit: Use a fine-tooth saw or sharp knife for clean edges—TP10 cuts like butter.
3. Seal the Deal: Butt boards tightly and tape joints with foil tape to maximize the low-emissivity benefits. Add a breathable sarking membrane over the top for moisture control.
4. Ventilate Smartly: Leave a 50mm air gap between insulation and roof covering to prevent condensation.

Pro tip: For two-layer systems, combine with thicker TP10 boards to eliminate thermal bridging entirely. Always check local building codes, but TP10's flexibility makes compliance a doddle.

Why Shop at Insulation Warehouse Direct?

At Insulation Warehouse Direct (that's us at https://www.insulationwarehousedirect.co.uk/), we're all about outstanding service, exclusive pricing, and industry expertise. We stock genuine Kingspan TP10 in 25mm and beyond, ready for next-day delivery across the UK. Our trade accounts unlock even juicier deals, free technical advice, and hassle-free returns. No middlemen, just direct-from-warehouse savings that keep your budget on track.

Current stock alert: 25mm TP10 boards are flying off the shelves—grab yours now at our competitive rates and elevate your project today!

Ready to Insulate Smarter?

The 25mm Kingspan TP10 isn't just insulation; it's an investment in efficiency, comfort, and sustainability. Whether you're battling the chill this autumn or prepping for next spring's builds, it's got your back (and your roof).

Got questions? Drop us a line at sales@insulationwarehousedirect.co.uk or give our experts a call on 0333 090 8479 Let's chat TP10 and turn your vision into a reality.

Stay insulated, The Insulation Warehouse Direct Team

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