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London:

0800 170 0150

Essex:

01245 850 249

Suffolk:

01473 375 041

Direct:

07511 683 156

FREE, no obligation quotes
Fully Insured Roofing Company
24/7 Emergency Roof Repairs

If your property has suffered sudden damage or become unsafe, our emergency building services are ready to respond fast. We carry out urgent repairs to secure the structure, prevent further deterioration, and restore safety to your home as quickly as possible.

If your property has suffered sudden damage or become unsafe, our emergency building services are ready to respond fast. We carry out urgent repairs to secure the structure, prevent further deterioration, and restore safety to your home as quickly as possible.

We provide a full range of building services from conservatories, extensions and loft conversions to brickwork, asbestos removal and damp proofing, our team delivers quality work for projects of every size.

Conservatories

Extensions

Loft Conversions

Brickwork

Asbestos Removal

Damp Proofing

How much does a loft conversion cost?

Typical loft conversion costs vary by type, size and complexity. As a broad guide: Velux/roof‑light conversions are usually the most cost‑effective, dormer conversions sit in the mid‑range and mansard, hip‑to‑gable or L‑shaped projects are at the higher end due to structural and planning work. During a free survey we provide an itemised estimate based on your existing roof, floor build‑up and required services so you can see the likely conversion_cost and overall costs for your project. Book a free survey to get a tailored quote.

Do I need planning permission for a loft conversion?

Many loft conversions are completed under Permitted Development and do not require formal planning permission, but there are common exceptions: significant increases in roof volume, properties in conservation areas, listed buildings or large mansard works usually need full planning consent. If you aren’t sure whether you need planning permission, request our free planning pre‑check and we’ll confirm the likely outcome for your address. Read more about planning & building regulations.

What types of loft conversions are available and which is best for my house?

Common types of loft conversions include Velux/roof‑light, dormer, hip‑to‑gable, mansard and L‑shaped dormers. The best option depends on your existing roof, roof pitch, headroom and the amount of usable space you want. We check roof pitch and existing roof structure during the free survey and recommend the most cost‑effective design to meet your space and budget goals. See our types of loft conversions and book a headroom check. You can also download our free checklist (photos to take before a survey) to speed up the process.

Will I need a structural engineer?

Most loft conversions require structural input: a structural engineer designs supports (for example RSJs), checks floor joists and specifies the reinforcements so the new floor and roof interfaces comply with building regulations. We include structural surveys and calculations in the design phase and work with qualified structural engineers and building control to ensure the conversion is safe and sign‑offable. Ask about our structural survey.

How will a loft conversion affect energy efficiency and insulation?

A professionally designed loft conversion improves energy efficiency by replacing old insulation, installing high‑performance glazing and upgrading ventilation to current standards. We design insulation, ventilation and windows to meet building regulations and to reduce running costs while keeping the new room comfortable year‑round. Ask about insulation and energy‑efficient upgrades during your free survey.

Get A Quote

Book your free, no-obligation loft conversion survey today. Our expert team will assess your roof structure, discuss design options and provide a clear, competitive quote for your loft conversion or attic extension.

Book your free, no-obligation loft conversion survey today. Our expert team will assess your roof structure, discuss design options and provide a clear, competitive quote for your loft conversion or attic extension.

Artillery Roofing & Building Ltd

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