At CB Building Products, we know what matters to trade professionals: speed, performance, and compliance. Insulated plasterboards are increasingly becoming the go-to choice for achieving all three. Whether you’re working on a new build or upgrading existing structures, they help deliver energy efficiency, fire safety, and space-saving performance.
In this guide, we’ll explain everything you need to know about trade insulated plasterboards, how they work, where to use them, and why they’re an essential addition to your trade toolkit.
What Are Insulated Plasterboards?
Insulated plasterboards combine a standard plasterboard layer with an insulating core, such as PIR (polyisocyanurate). This offers the dual benefit of a smooth internal finish and improved thermal performance in a single product.
They are designed to save time on site and reduce the need for separate insulation and boarding.
Benefits of Using Insulated Plasterboards
1. Improved Thermal Efficiency
The main reason to use trade insulated plasterboards is thermal performance. By reducing heat loss through walls and ceilings, they help meet Part L of UK Building Regulations.
PIR insulated boards in particular have very low thermal conductivity, helping meet U-value targets in both new builds and renovations.
2. Easy Installation
Instead of installing insulation and then applying plasterboard, this solution does both in one step. It saves time, reduces labour, and speeds up your overall workflow on site.
With Warmline insulated plasterboards, you can cut, fit, and fix panels with minimal additional steps — perfect for tight deadlines.
3. Space Saving
In buildings where space is limited, thinner products that deliver the same thermal performance are valuable. PIR insulated boards can offer excellent insulation with minimal thickness, preserving internal space.
4. Moisture Resistance
In areas like kitchens, bathrooms, or utility rooms, moisture-resistant plasterboards are essential. Products like Warmline insulated plasterboards include moisture-resistant properties as standard, reducing the risk of damp, mould, and long-term damage.
5. Energy Savings for the End Client
Well-insulated buildings retain more heat. This reduces energy consumption and improves the comfort of occupants. Trade professionals who use insulated plasterboards deliver greater long-term value to their clients.
Common Applications for Insulated Plasterboards
1. Internal Walls
Ideal for improving the thermal resistance of solid or cavity walls in residential and commercial buildings.
2. Ceilings and Loft Spaces
Perfect for reducing heat loss through the roof, especially in loft conversions or top-floor flats.
3. Basement Conversions
Protect against cold and damp in underground spaces.
4. Timber and Metal Stud Walls
Works with partition systems in both residential and commercial builds.
Warmline Insulated Plasterboards: Our Best-Selling Solution
At CB Building Products, we supply a range of Warmline insulated plasterboards, designed specifically for trade projects.
These boards combine high-performance PIR insulation with standard or moisture-resistant plasterboards in a range of thicknesses.
Available Options Include:
37.5mm, 52.5mm, 62.5mm, and 72.5mm
- Moisture-resistant facing options
- Ready for dot-and-dab or mechanical fixing
Whether you’re upgrading thermal performance or working on a retrofit project, Warmline delivers reliable, space-saving insulation in one product.
Why Trade Professionals Choose Insulated Plasterboards
- Faster on-site installation
- Improved project timelines
- Cleaner internal finish
- Better thermal efficiency
- Lower material wastage
These products are ideal for housing developments, office fit-outs, HMO refurbishments, and retrofit upgrades.
Frequently Asked Questions
What is the difference between standard and insulated plasterboard?
Standard plasterboard has no insulating layer. Insulated plasterboard includes a bonded layer of insulation, such as PIR or polystyrene, for improved thermal performance.
Where can I buy insulated plasterboards in the UK?
CB Building Products is a trusted supplier. We stock Warmline insulated plasterboards, PIR insulated boards, and more — available for fast UK-wide delivery.
Are PIR insulated boards fire-rated?
Some are, depending on the product specification. Speak to our team to find a solution that meets your fire safety requirements.
Can I use insulated plasterboards in bathrooms or kitchens?
Yes, use moisture-resistant plasterboards with PIR insulation to protect against damp environments.
Do you offer bulk discounts for trade?
Yes. We provide trade pricing and bulk order support across our entire range.
How CB Building Products Supports Your Insulated Plasterboard Projects
When you choose CB Building Products, you’re partnering with a supplier that understands trade needs. Here’s how we help:
- Full stock of Warmline insulated plasterboards
- Competitive prices on all PIR insulated boards
- Expert advice on moisture-resistant and thermal options
- Quick UK delivery with next-day service available
- Bulk ordering support for large-scale trade jobs
We’re here to make your job easier, faster, and more profitable.
Why Trade Insulated Plasterboards Are the Future
Modern construction demands speed, energy efficiency, and compliance. Trade insulated plasterboards offer all three. From Warmline insulated plasterboards to moisture-resistant solutions, they help you deliver better outcomes, faster.
With growing demand for energy-efficient retrofits and space-saving construction, these solutions will only become more essential.
Contact CB Building Products
Ready to place your order or need advice on which board is best for your project?
Call us: 01527 359 047
Email: info@cbbuildingproducts.co.uk