Mandatory Technical Competence (MTC) is no longer an abstract regulatory requirement on the horizon; it is now a legal expectation - and FENSA is urging installers to prepare for a more transparent, standardised and evidence-driven future.
While the term “mandatory competence” may sound like a technicality, its implications are far-reaching. At its core, the updated MTC framework reflects a national move toward greater responsibility across construction, driven by lessons learned from major enquiries, changes in public expectations and the accelerating professionalism of the wider built environment sector.
Over the last decade, the construction industry has undergone intense examination following high-profile tragedies, with systemic failures uncovered in the Hackitt Review. Findings consistently pointed to a common problem: a lack of clear, consistent and regularly updated standards of competence. Too often, responsibility was diffuse, record keeping inconsistent and qualifications outdated.
The installation sector - as a part of the wider renovation and domestic construction market - is now feeling the impact of those findings. Window and door installers are no longer judged solely on the quality of what they fit, but on the traceability, currency and credibility of the knowledge behind their work.
It is under this context that the government has moved from Minimum Technical Competence to Mandatory Technical Competence.
“The previous system allowed competence to be inferred”, says Sam Davies, FENSA Technical Manager. “So, if an installer achieved an NVQ a decade ago and had been fitting consistently every since, their competency was assumed off the back of experience and qualifications.”
“But under this new framework, competence must be assessed against four defining pillars known as SKEB: skills, knowledge, experience and behaviours.”
These are not abstract categories, but practical, assessable criteria meant to reflect an installer’s capability in real-world scenarios and their understanding of current Building Regulations, product standards, installation techniques and safety protocols.
One of the most significant updates is the requirement for qualifications and assessments to be current, not historical. An NVQ may once have been seen as a lifetime credential but under the updated rules, it is only valid for five years for those that self-certify building regulation compliance.
After that, a refresher or reassessment is required. This ensures installers remain informed about evolving regulations - something that has become increasingly important in recent years with the ever-evolving regulatory landscape.
But the push for higher competence standards is not only legislative, it is also consumer driven.
“Today’s homeowners are more informed, more cautious and more research-oriented than any previous generation”, explains Sam. “They are comparing installers online, asking detailed questions about compliance, checking whether a FENSA certificate will be issued and seeking reassurance that the work carried out on their property meets defined standards.
“This has only been accelerated by the availability of online information and the increasing influence of AI, which makes easily digestible facts on regulation more accessible than ever.
“Whether or not the guidance AI provides is perfect, it has shaped consumer expectations: competence should be provable.”
This means installers who cannot clearly demonstrate compliance risk losing work before they’ve even had a chance to quote - not because they lack skill, but because they lack documentation. Conversely, those who can show a current MTC card or equivalent qualification are seen as lower risk and more trustworthy.
The transition to Mandatory Technical Compliance may feel daunting to installers who have learned their trade over decades. But the system is designed to support varied levels of experience, with two established routes available.
The FENSA Skills Card route provides an on-site assessment carried out by an independent assessor. This pathway is particularly suited to experienced installers who are confident in their work and want a straightforward route to compliance without a long qualification process.
The NVQ qualification route offers a formal, structured pathway with coursework, practical assessments and portfolio development, often over a 12 to 18 month period and commonly requires an end point assessment.
What is essential under the new rules is that whatever route installers choose, their evidence must be current. A qualification achieved a decade ago, no matter how credible at the time, cannot
Sam Davies, Fensa
