Commercial
Secondary Glazing for HMO Landlords
HMO licensing conditions vary by council — but Sheffield, Rotherham and Doncaster all now include acoustic separation as a factor in enforcement decisions. Below is the specification we install most often for hmo landlords clients, and how we handle portfolio-wide rollouts phased over tenancy turnovers.
Local reference points
- Regulations
- HMO licensing acoustic and thermal minimums, EPC 2028 rating targets
- Typical project
- portfolio-wide rollouts phased over tenancy turnovers
- Recommended service
- Thermal Insulation
- Performance
- U-values from 1.868 W/m²K
- Recommended product
- horizontal sliders
- Coverage
- South Yorkshire, West Yorkshire, Derbyshire, Notts
Standard spec for hmo landlords
EPC-boosting Low-E glass is the default landlord spec.
Key-lock handles satisfy Sheffield HMO licensing security minimums.
Portfolio rollouts scheduled around tenancy turnovers — no void extension needed.
"What's the payback on a rental unit?"
Our portfolio landlords report an average one-band EPC uplift and a measurable drop in noise-related tenant turnover.
Recent installs nearby
Kelham Island loft conversion
Four large steel-frame factory openings sealed with slim satin-anodised horizontal sliders. Post-install U-value 1.87 W/m²K.
Moorgate HMO security retrofit
Ground-floor sashes across four HMO units fitted with key-lock hinged units to meet the licensing conditions.
Bennetthorpe villa Low-E retrofit
Full ground-floor sash retrofit with Low-E secondary sliders — gas usage down 22% over the following heating season.
Other commercial sectors we cover
Common questions
How long does an install take?
A typical whole-house residential install is a single day; larger commercial jobs are phased so trading isn't interrupted.
Is there a warranty?
Yes — 10 years on the manufacture and installation, and a manufacturer's warranty on the glass units.
How does this compare to replacement double glazing?
A modern secondary unit with Low-E glass and a 100 mm cavity outperforms most existing sealed double-glazed units — and it works on windows you legally can't replace.
Can Low-E glass be combined with acoustic laminated?
Yes — most heavy specifications combine both, so you get acoustic gain and thermal gain in the same install.
Will it help with condensation on my sash windows?
Almost always — the room-side pane raises the surface temperature of the glass you touch, which stops warm interior air condensing.
Commercial-grade specification, phased around your operation
Hotels, schools, offices — tell us the trading pattern and we'll fit around it.
Next step for hmo landlords projects
Tell us the site, the trading pattern and the acoustic or thermal target. We'll come back with a phased programme and a fixed-price quote — most hmo landlords projects complete without any operational disruption.