Loft Space Upgrade Specialists
Room in Roof Conversion services help UK homeowners transform existing loft spaces into comfortable, energy-efficient rooms without a full extension. LAMTANS Engineering delivers professional upgrades from our Manchester base, combining insulation improvements, structural works, and quality finishes across the UK.
The Service
If your home already has a partially converted loft, you may need a room in roof conversion to bring it up to modern standards and make it truly habitable.
LAMTANS Engineering specialises in upgrading existing room in roof spaces — making them warm, safe and comfortable for everyday use.
Warning Signs
A room in roof conversion is typically required when an existing loft space shows structural, electrical or comfort-related issues that prevent it from being safely or effectively used as a habitable living area.
| Sign | Problem | Our Solution |
|---|---|---|
| Room is cold in winter, hot in summer | Poor or missing insulation | Install PAS2035 compliant insulation (between and over rafters) |
| Electrics trip or don't work safely | Old wiring, no RCD protection | Full rewiring, new consumer unit, LED downlights |
| No heating or cold room | No radiators, or undersized ones | New radiators or underfloor heating |
| Damp patches or condensation | Poor ventilation | Install vapour control layer, improve ventilation |
| Cracked or crumbling plaster | Old plaster | Re-plaster with a skim finish |
| Floor feels springy or unsafe | Undersized joists | Reinforce the floor structure |
Full Scope
A room in roof conversion involves a complete upgrade of the existing loft space, covering insulation, ventilation, services and finishing works to ensure the space becomes safe, energy efficient and fully habitable.
Roof insulation between and over rafters, plus party wall insulation for improved thermal performance.
Vapour control layer installed to prevent condensation and moisture issues in the roof structure.
New plasterboard, skim finish, and making good existing walls and ceilings.
Full rewiring, consumer unit connection, LED lighting, sockets and switches.
Installation of radiators or underfloor heating with smart heating controls.
Installation of carpet, wood, LVT or tile flooring depending on your specification.
Full compliance with UK building regulations and final certification, all handled for you.
Indicative Guide Prices
Room in roof conversion costs vary depending on the level of upgrade, with prices increasing based on structural work, insulation quality and additional features such as bathrooms or full refurbishments. The figures below are indicative guide prices only.
| Upgrade Level | Indicative Cost | What's Included |
|---|---|---|
| Basic upgrade | £5,000 – £10,000 | Insulation, plastering, basic electrics |
| Full upgrade | £10,000 – £20,000 | Insulation, plastering, full rewiring, new heating |
| Premium upgrade (with ensuite) | £15,000 – £25,000 | Full upgrade + ensuite bathroom |
All costs shown are indicative guide prices, not fixed quotes. Your free site survey confirms an accurate written quote for your property.
Contact Us for a Free, Accurate Quote →Step by Step
The room in roof conversion process follows a structured step-by-step approach — from initial survey and regulatory checks to insulation, electrical works, finishing and final building control approval — ensuring full compliance and quality standards.
We assess the existing conversion — insulation, electrics, heating, structure and ventilation.
We identify exactly what's missing and what needs upgrading to meet modern standards.
The space is cleared out ready for the new insulation and services.
New insulation fitted between and over the rafters to recognised retrofit standards. This stage determines the room's year-round comfort and energy performance — getting the insulation and moisture detailing right is what makes the whole conversion succeed.
New wiring and radiator pipework installed before the walls are closed up.
New plasterboard fitted and finished with a smooth skim coat.
Finishing work — flooring laid, sockets and light fittings installed.
Paint, carpet and the final touches that make the room ready to use.
We ensure full compliance and obtain the final certification.
Trusted Specialist
We provide specialist room in roof conversion services across the UK with a focus on insulation, compliance and full project delivery — ensuring energy-efficient and regulation-approved living spaces.
We specialise in insulation and energy-efficient room in roof conversions for UK housing stock.
Insulation and works installed to the latest British retrofit standards for quality, safety and energy efficiency.
One point of contact managing the entire conversion from start to finish.
We manage all approvals and compliance requirements for you, through to final certification.
Honest advice with no pressure sales approach — and a free site survey before any quote.
Based in Manchester and serving Stockport, Oldham, Droylsden, Ashton-under-Lyne, Tameside and Greater Manchester, with nationwide UK coverage.
Common Questions
A loft conversion starts from an empty, unconverted loft. A room in roof conversion upgrades an existing, partially converted loft to meet modern standards. If you're starting from an empty loft, see our loft conversion service.
As an indicative guide: a basic upgrade is around £5,000–£10,000, a full upgrade £10,000–£20,000, and a premium upgrade with an ensuite £15,000–£25,000. These are indicative estimates only — your free site survey confirms an accurate written quote.
Usually not, because the roof shape is not changing. You will, however, need building regulations approval — and we handle this for you from application through to final sign-off.
Yes. Proper insulation installed to PAS2035 retrofit standards helps stop heat escaping through the roof, making the room comfortable year-round and your home more energy efficient.
Typically 3–5 weeks depending on the scope of work. We confirm a timeline for your project after the free site survey.
Yes. We are TrustMark Registered, RECC Accredited and PAS2035 Compliant, and we deliver ECO4 eligible projects. You can view our credentials on our accreditations page.
Free Survey & Quote
Get your free, no-obligation room in roof conversion quote today — contact LAMTANS Engineering for a site survey. Not sure if your existing loft conversion needs upgrading? Book a free consultation — we will assess your property and advise you within 72 hours following your free survey.
Free survey · No obligation · Advice within 72 hours following your free survey