Building Control for Roofing

Our team ensures all work is compliant, safe, and properly certified.

We offer full building control management from application to completion.

Building Control is required if more than 25% of the roof covering is replaced.

BUILDING CONTROL

A Helpful Building Control Guide for Homeowners

Got a question about building control?
Email our experts.

Email Us

Many homeowners don’t realise that Building Control can apply even without structural changes. Under the Building Regulations 2010, replacing more than 25% of a roof usually requires approval, and skipping this can lead to issues such as failed mortgage surveys or costly regularisation later. At ROSE ROOFING, we handle the entire process for you, from assessing requirements to securing your Completion Certificate. This guide explains why Building Control matters and how the process works.

Why Building Control is Required for Roof Coverings

Replacement materials and methods comply with Parts B, C, and L of the Building Regulations.

When Must You Notify Building Control

You are legally required to notify Building Control when you replace more than 25% of the roof covering, add insulation or alter ventilation.

Building Control Management Process with ROSE ROOFING

We ensure full compliance and seamless communication with the local authority or approved inspector.

Why Proper Certification is so Important

Notified and signed off work protects both your investment and your home’s long-term integrity.

Why Building Control is Required for Roof Coverings

Building Control ensures that every part of your home, including the roof meets strict national standards. For re-roofing projects, it helps confirm that the replacement materials and methods comply with Parts B, C, and L of the Building Regulations:

Part B – Fire Safety

Roof coverings must have adequate fire resistance. This includes the surface spread of flame rating (AA, AB, AC, etc.) and the suitability of materials used near boundaries.

Part C – Resistance to Moisture

Proper detailing of membranes, flashings, and ventilation is essential to prevent water ingress, interstitial condensation, or rot. Building Control checks that your re-roof maintains moisture resistance.

Part L – Conservation of Fuel and Power

If you replace more than 25% of the roof area, you are required to upgrade the insulation to meet current thermal efficiency standards (U-value ≤ 0.18 W/m²K for pitched roofs). This means your re-roof must include sufficient insulation thickness and vapour control layers in accordance with the latest regulations.

When Must You Notify Building Control

You are legally required to notify Building Control when:

01

You replace more than 25% of the roof covering

e.g. full re-roof

02

You add insulation as part of a roof upgrade

03

You alter roof ventilation or change the warm/cold roof build-up

04

You are unsure whether your works meet the “material alteration” definition

In which case, ROSE ROOFING can confirm

For minor repairs such as replacing a few slipped tiles or fixing lead flashings Building Control is not usually required. If you are still unsure if you require Building Control, contact us today and we can let you know.

Building Control Management Process with
ROSE ROOFING

We act as your liaison throughout, ensuring full compliance and seamless communication with the local authority or approved inspector. Here’s how we handle it step by step.

1.

Initial Assessment and Survey

2.

Submitting the Building Control Application

3.

Carrying Out the Roof Works

4.

Inspections by Building Control

5.

Completion and Certification
1. Initial Assessment and Survey

Before works begin, we complete a thorough inspection of your roof covering and underlay system. During this stage we:

  • Identify whether your project meets the threshold for Building Control.
  • Inspect ventilation paths, insulation, felt condition, and batten layout.
  • Provide advice on upgrading insulation to meet Part L standards.

If Building Control is required for your roofing work, we’ll confirm this within our quote. This can be found under a line item called Building Control.

2. Submitting the Building Control Application

At Rose Roofing we handle the entire notification process for you so you don’t have to worry.

  • We will firstly identify your local Building Control.
  • We will complete your application on your behalf, disclosing the work planned.
  • A payment for the application we be made by ourselves on you behalf. (This cost will be covered within the quote we have provided you).
  • A Building Control visit will be booked within the first two days of ROSE ROOFING commencing the work to initiate the commencement.
3. Carrying Out the Roof Works

Our roofing specialists then complete your re-roof in strict accordance with manufacturer standards and Building Regulations. This includes:

  • Removal of the old covering and defective felt/battens.
  • Installation of breathable membrane and treated battens.
  • Replacement or addition of eaves trays, dry ridge and verge systems.
  • Insulation upgrades as required under Part L.
  • Installation of the new tile or slate covering using correct fixings and gauge spacing.
  • Integration of ventilation details at eaves and ridge level.

Throughout, Rose Roofing documents photographs and site notes ready for inspection.

4. Inspections by Building Control

Building Control officers may visit at key points, such as:

  • Pre-covering inspection – to check insulation, underlay and ventilation before tiling.
  • Final inspection – to ensure compliance with materials and workmanship.

We liaise directly with inspectors, provide access and supply any technical data sheets they request. If any small amendments are required, we action them immediately to prevent delays in certification.

5. Completion and Certification

When the re-roof passes inspection, Building Control will issue a Completion Certificate, confirming that your local authority has officially signed off the works as compliant with current Building Regulations.

This certificate is a very important document and should be kept safe for future reference. It acts as proof that your roof covering was inspected, approved, and fully meets the required standards.

This will act as a permanent compliance record and can be essential if you decide to sell, remortgage, or make an insurance claim in the future.

Why Proper Certification is so Important

Without a Completion Certificate, you could face:

  • Refusal by mortgage lenders or buyers’ solicitors during conveyancing.
  • Additional fees to regularise the work years later.
  • Problems with building insurance or claims.
  • Reduced property value due to non-compliant documentation.

By ensuring the work is properly notified and signed off, you protect both your investment and your home’s long-term integrity.

Frequently Asked Questions

Not usually, unless you’re altering the roof height, shape, or materials in a conservation area.

Not always, however if more than 25% of the covering is replaced or insulation is affected, yes, it’s mandatory.

Typically 2–4 weeks from application to certificate, depending on inspection schedules.

You can apply for a Regularisation Certificate, but it’s often more expensive. Rose Roofing can advise on this.

The homeowner does, but it’s included in your quotation when managed through Rose Roofing.

This is determined by your local building control and not something Rose Roofing has any control in. The required fee for your area will be included within your new roof quote. Feel free to give us a call if you would like us to let you know your local building control application charge.

Of course, if you would prefer to handle your own Building Control application, we are more than happy for you to do so. However, please be aware that any incorrect or incomplete applications, or failure to arrange the required inspections at the correct stages, can result in delays, additional costs, or the need for further remedial works.

A new roof covering is one of the most important improvements you can make to your home. When managed correctly through Building Control, it not only enhances energy efficiency and weather protection but also ensures long-term compliance and peace of mind.

At ROSE ROOFING, we make the process simple — handling every stage from survey and application to inspection and certification.

Got a question about Building Control?

Get in touch with our helpful and experienced team at ROSE ROOFING today.

EMAIL US Call us