Stop Cavity Wall Claims Before They Happen
The only ventilation system with built-in quality control that lets you prove compliance and prevent the 15% of claims from cavity failures.
How Active Moisture Extraction Works
Unlike passive vents that rely on hope, Active Vent uses wind-powered negative pressure to actively extract moisture from cavity walls - protecting your builds and your reputation
Why Do 15% of New-Build Claims Come From Cavity Wall Failures?
According to the National House Building Council (NHBC), cavity wall failures represent 15% of all superstructure insurance claims on new builds in England and Wales. That's a staggering cost to the industry - and your reputation.
Traditional Vents Create These Problems:
- They're passive - They can't actively remove moisture, they just hope air flows through
- They trap water during rain - Driving rain can actually push water into cavities
- You can never inspect them - Once installed, there's no way to verify what's happening inside
- Wet insulation kills efficiency - Moisture reduces insulation effectiveness by up to 186%, leading to energy complaints
The result? Callbacks, complaints, warranty claims, and damage to your reputation. Homeowners blame the builder when their energy bills are high or mold appears - even when you followed all the regulations.
How Can You Inspect Cavity Walls After Construction Is Complete?
Until now, the answer was "you can't." Once walls are closed up, cavity quality is a black box. But Active Vent changes everything with the world's first removable insert system.
The Removable Insert: Your Quality Control Breakthrough
Easy Removal
Simply pull out the insert - no tools needed
Camera Inspection
Use an endoscope or inspection camera to view inside the cavity
Verify & Document
Check insulation placement, look for mortar bridges, prove compliance
Reinsert & Done
Pop the insert back in - full functionality restored
What You Can Verify:
- Insulation is in place
- No mortar bridges present
- Cavity is clean and dry
- DPC/cavity tray functioning
- No blockages or debris
- Building regs compliance
The Competitive Advantage This Gives You:
🛡️ Protect Your Reputation
Prove to building control, warranty providers, and homeowners that everything is done correctly
📉 Reduce Callbacks
Catch issues before handover instead of getting calls years later
💰 Prevent Claims
Stop the 15% of claims from cavity failures before they start
🏆 Marketing Gold
"Our homes feature inspectable cavity ventilation" - that's a selling point no competitor can match
What Makes Wind-Powered Active Ventilation Better Than Passive Vents?
Traditional vents just sit there and hope air flows through them. Active Vent harnesses the power of wind to actively pull moisture out - like a vacuum cleaner for your walls.
The Three Revolutionary Innovations:
Wind-Powered Suction
Uses the power of wind to create active suction that pulls moisture out
Inspectable Insert
World's first removable system for quality control and inspection
Cross-Ventilation
Only vent that exchanges air across the cavity, reducing humidity by 65%
| Feature | Active Vent | Traditional Passive Vents |
|---|---|---|
| Moisture Removal | ✓ Active wind-powered suction | ✗ Passive - hope air flows |
| Severe Weather Performance | ✓ Works even in storms | ✗ Blocks during rain |
| Quality Control | ✓ 100% inspectable | ✗ Black box - never know what's inside |
| Cavity Air Exchange | ✓ True cross-ventilation | ✗ Single-point drainage only |
| Humidity Reduction | Up to 65% | Minimal to none |
| Insulation Protection | ✓ Keeps insulation dry and effective | ✗ Allows up to 186% efficiency loss |
| Claims Risk | ✓ Dramatically reduced | Part of 15% of all claims |
Why Should Developers Care About Cavity Wall Humidity?
Because wet walls are the hidden energy killer that leads to homeowner complaints, warranty claims, and damage to your reputation.
The Wet Insulation Problem
When moisture gets into cavity walls, it creates what's called interstitial damp (moisture trapped between layers of materials). This moisture soaks into insulation, dramatically reducing its effectiveness.
The Shocking Reality:
Scientific research shows that high humidity can reduce insulation effectiveness by up to 186.7% in some materials - essentially destroying its thermal properties.
Source: ScienceDirect studies on moisture impacts on insulation materials
What This Means For You:
Homeowner Complaints
"My energy bills are sky-high!" - Even though you installed proper insulation, wet insulation doesn't work
SAP/EPC Issues
Predicted energy performance doesn't match reality when insulation gets wet
Warranty Claims
Damp-related issues trigger warranty calls and expensive remedial work
Reputation Damage
Unhappy homeowners leave bad reviews and tell others about their "cold, expensive-to-heat" home
Active Vent's Solution:
By actively removing moisture and reducing cavity humidity by up to 65%, Active Vent keeps insulation dry and performing at its rated capacity. This means:
- Energy performance matches predictions - No nasty surprises for homeowners
- Homeowners save 15-30% on energy bills - Happy customers = good reviews
- Fewer warranty claims - Protection against damp-related issues
- Better reputation - Build homes that actually perform as promised
What Results Can You Expect From Active Vent?
Builder Testimonial:
As a contractor, I've tried numerous ventilation products. The Active Vent is in a league of its own. The removable insert gives us peace of mind - we can actually prove to building control that everything is correct. It's now our go-to solution for both new builds and renovation projects.
- James Wilson, Building Contractor
Architect's Perspective:
I now specify Active Vents for all my projects. The innovation behind this product is remarkable. We've specified Active Vents in multiple projects and have seen consistent results in reducing humidity and preventing cavity tray failure issues.
- Sarah Chen, Architect
The Bottom Line:
- Zero callbacks related to cavity dampness
- Faster building control sign-off
- Higher customer satisfaction scores
- Competitive marketing advantage
How Easy Is Active Vent To Install?
Installation is just as simple as traditional vents - but with the added benefit of quality control verification afterwards.
New Builds:
- 1 Place Active Vent between bricks during construction
- 2 Position 225mm apart at cavity tray locations
- 3 Ensure mortar is kept clear during bricklaying
- 4 Bonus: Inspect cavity with camera before final sign-off
Retrofit/Remedial:
- 1 Drill 65mm hole at cavity tray location
- 2 Insert Active Vent flush with wall surface
- 3 Mortar around edges to seal
- 4 Bonus: Inspect existing cavity condition before sealing
Technical Specifications:
Dimensions & Materials:
- Size: 65mm diameter x 230mm length
- Material: UV-resistant polypropylene
- Colors: Terracotta, natural, black, white, brown
- Eco option: 100% recycled material available
Performance & Compliance:
- Humidity reduction: Up to 65%
- Weather resistance: All conditions
- Warranty: 10 years
- Compliance: UK Building Regulations + NHBC standards
Stop Building With Yesterday's Technology
Join forward-thinking developers who are preventing claims, ensuring quality, and building better homes with Active Vent.
Need samples or technical specifications? Contact us for your development project.