💧 Vapour Control Layer Installation – Protecting Your Home from the Inside Out
At DSN+BD Construction, we believe that a high-performing home isn’t just about stunning finishes — it’s about what happens behind the walls. One of the most overlooked but essential parts of any energy-efficient, long-lasting build is the vapour control layer (VCL). And on our latest project, this layer is now expertly installed and doing its critical job.
🛡️ What Is a Vapour Control Layer?
A Vapour Control Layer (VCL) is a thin but powerful barrier installed on the warm side of the insulation. Its job? To prevent warm, moisture-laden air from passing into the building fabric, where it could cool and condense — potentially leading to mould, damp, and damage over time.
Moisture control is one of the keys to a dry, durable, and energy-efficient home — and that’s exactly what this layer helps to achieve.
🔧 What We’re Installing: 500 Gauge Polyethylene Sheeting
For this project, we’ve used 500 Gauge Polyethylene Sheeting, a tried-and-tested VCL material that’s:
💪 Strong and durable – resistant to tearing during installation
💸 Budget-friendly – offering great value without compromising performance
🧱 Reliable – performs consistently across walls, ceilings, and floors
It’s a simple solution, but when installed properly, it makes a massive difference to the overall integrity and thermal performance of the home.
🔍 Why It Matters
When moisture finds its way into walls or roof spaces, it doesn’t just disappear. Over time, trapped condensation can:
Damage timber frames and plasterboard
Reduce the effectiveness of insulation
Lead to mould and air quality issues
Compromise airtightness and energy efficiency
By installing a VCL, we protect the structure and the insulation — ensuring everything performs as it should, for the long term.
🧠 Design-Led Thinking, Built Right
Because we work as a design-led design and build company, the vapour control layer isn’t an afterthought. It’s carefully considered as part of the whole wall build-up — alongside insulation, breather membranes, and airtightness detailing.
We ensure:
Complete and continuous coverage
Sealed joints around services and fixtures
Secure fixing behind interior finishes
Full compliance with Building Regs and best practice
It’s one more layer of thoughtfulness that makes a difference in how the home feels — warm, dry, and comfortable every day.
🏡 A Dry, Cozy, Energy-Efficient Home Starts Here
With the vapour control layer now installed, this home is well on its way to delivering real comfort — not just on the surface, but deep within the structure.
It’s a small detail with a big impact — and one more reason DSN+BD builds homes that last.
Planning a new build or energy-efficient retrofit? Let’s talk about the smart layers that make all the difference.
📩 Get in touch to find out how we deliver performance as well as precision.