Planit X Limited
Planit X Limited
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About our Air Tightness Testing

 Backed by a 35-year background in the construction sector, we approach air leakage from a structural perspective. Our 15 years of dedicated ATTMA testing experience means we don't just find leakage pathways, we also understand the building physics behind them, ensuring your project meets strict Scottish design targets seamlessly.

Passivhaus Certified

 At Planit X Limited, we are fully certified to test low-energy, high-efficiency buildings constructed to rigorous Passivhaus standards. Passivhaus design demands an exceptional level of airtightness—requiring a maximum target of just 0.6 air changes per hour (n50) under pressure. Achieving this requires precision testing using specialized equipment and a deep understanding of thermal bridging and building physics. Our certification means we have the accredited expertise to partner with architects, energy consultants, and contractors from the early design stages through to final pressure testing, ensuring your sustainable project satisfies strict international compliance. 

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Construction-Led Compliance Specialists

Planit X is one of very few ATTMA and SITMA accredited testing specialists operating locally across the Highlands, Island and North East Scotland - a vast and remote region often underserved by testing companies based further south.

Our 35 year construction background means we understand build programmes and not just testing procedures.

Same day certificate and report delivery by email, which removes bottlenecks for clients under pressure to submit to Building Standards quickly.

Certified Testing & Accreditations

 Planit X Limited is fully registered under ATTMA for commercial and domestic properties, providing certified blower door diagnostics and official compliance certificates for Scottish Building Standards. Our expanded credentials now include specialized airtightness testing for low-energy eco-builds designed to rigorous Passivhaus thresholds. 

Our Target Customers

Customer type 1 - Small to medium house builders and developers in the Highlands and North East Scotland who need mandatory air tightness and sound testing at the right stage of their build programme to avoid delays in obtaining building warrants and completion certificates.


Customer type 2 - Self-build homeowners in rural Scotland who are constructing their own homes and require clear, jargon-free guidance on when and how to arrange compliance testing, often unfamiliar with ATTMA standards or what a Passivhaus or high-performance build demands.


Customer type 3 - Architects and building designers based in or working across the Highlands and Islands who need a trusted local testing partner they can recommend to clients and rely on for accurate results and prompt reporting to satisfy Building Standards requirements.


Customer type 4 - Main contractors and site managers on commercial or mixed-use construction projects in northern Scotland who need sound testing between separating floors and walls to meet Part E (Scotland: Section 5) of the Building Regulations before handover.


Customer type 5 - Housing associations and registered social landlords delivering affordable housing schemes across the Highlands and Islands who require consistent, compliant testing services across multiple plots and need a reliable local supplier who understands the logistical challenges of remote Scottish locations.

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Our Air Tightness Testing Equipment

ATTMA accredited blower door fan system set up in a door frame for residential air tightness testing
Retrotec DM32X digital touchscreen manometer gauge used for high-accuracy building diagnostic pressu
ATTMA accredited blower door fan system set up in a door frame for residential air tightness testing
ATTMA accredited blower door dual fan system set up in a door frame for residential air tightness te

Our Team

Frequently Asked Questions

Frequently Asked Questions

 With over 15 years of specialized compliance testing experience in the North of Scotland, Planit X Limited delivers reliable building standard certifications you can trust. Our background includes extensive local fieldwork previously conducted as part of Highland Air Tightness Testing. Planit X Limited provides fully independent, standalone ATTMA and SITMA compliance testing across Inverness, the Highlands, and the Islands. 

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Frequently Asked Questions

Frequently Asked Questions

Frequently Asked Questions

 Need to hit a specific Section 6 design target? Passing a Scottish building warrant requires strict compliance. Discover exactly how we handle unexpected site failures on-site and what the maximum legal air permeability rates are in our updated Scottish Building Compliance FAQ.

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Our Service Areas

Frequently Asked Questions

Our Service Areas

 Wondering about travel to remote sites? Check our service areas to see where we provide professional blower door testing, sound insulation testing, and air tightness testing across Inverness and the Highlands.

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Need to pass your building warrant first time? Read our Scottish Building Compliance FAQWondering if we travel to your remote site? Check the Areas We CoverContact Us
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Planit X Limited

8 Culduthel Smithy Gardens

07801 441092

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