Loft insulation installer hull

UK Retrofit Subcontractor

Retrofit compliance is tough.
We make it simple.

Yorkshire-based retrofit specialists delivering bulletproof documentation and zero payment delays for contractors

£2.5M+ projects delivered

£2.5M+ projects delivered

£2.5M+ projects delivered

98% first-time submission success

98% first-time submission success

98% first-time submission success

PAS2030/2035 Certified specialists

PAS2030/2035 Certified specialists

PAS2030/2035 Certified specialists

Zero payment delays guaranteed

Zero payment delays guaranteed

Zero payment delays guaranteed

Trusted by Industry Leaders Across the UK

Serving homeowners, landlords, contractors, councils and housing associations

  • CLC Group Logo
  • Cocuun Logo
  • Hull City Council Logo
  • Energy Store logo
  • Hull City Council Logo

Trusted by Industry Leaders Across the UK

Serving homeowners, landlords, contractors, councils and housing associations

  • CLC Group Logo
  • Cocuun Logo
  • Hull City Council Logo
  • Energy Store logo
  • Hull City Council Logo

Trusted by Industry Leaders Across the UK

Serving homeowners, landlords, contractors, councils and housing associations

  • CLC Group Logo
  • Cocuun Logo
  • Hull City Council Logo
  • Energy Store logo
  • Hull City Council Logo

Trusted by Industry Leaders Across the UK

Serving homeowners, landlords, contractors, councils and housing associations

  • CLC Group Logo
  • Cocuun Logo
  • Hull City Council Logo
  • Energy Store logo
  • Hull City Council Logo

Tired of retrofit subcontractors who don't deliver on compliance?

As a primary contractor, you know the frustration.


You win a retrofit contract, appoint a retrofit subcontractor, and then the problems start:

Payment delays when evidence packages get rejected by funding bodies

Rework costs because installations don't meet PAS2030/2035 standards

Time wasted chasing certificates and documentation

Compliance headaches with incomplete Evidence Packs

Relationship damage with clients when projects overrun

One missed piece of evidence can delay payment for months.

You need a retrofit subcontractor who understands that compliance isn't optional – it's the difference between profit and loss on retrofit projects.

We're your trusted retrofit partner combining installation, compliance, and deep expertise tosupport you throughout the retrofit journey.

We're your retrofit partner combining installation, compliance, and deep expertise tosupport you throughout the project journey.

Northern Retrofit's independent experts guide you through the entire retrofit project—from initial assessment, installation by our highly qualified installers, to final sign-off and payment release.

Our compliance-first approach and proven systems cut risk, raise performance, and protect your investment.

With insights from £2.5M+ of completed retrofit projects spanning every major funding scheme and housing type, we meet you where you are and move your retrofit project forward with confidence.

Assessment

Our Retrofit Assessment team is comprised of fully qualified professionals accredited under TrustMark and certified to deliver assessments in line with PAS 2035 standards. Our NVQ-qualified team is equipped to carry out pre-installation building inspections for a variety of EEM’s, ensuring each property is suitable for proposed retrofit measures and compliant with relevant standards.

Bring clarity to your project scope.

Assessment

Our Retrofit Assessment team is comprised of fully qualified professionals accredited under TrustMark and certified to deliver assessments in line with PAS 2035 standards. Our NVQ-qualified team is equipped to carry out pre-installation building inspections for a variety of EEM’s, ensuring each property is suitable for proposed retrofit measures and compliant with relevant standards.

Bring clarity to your project scope.

Assessment

Our Retrofit Assessment team is comprised of fully qualified professionals accredited under TrustMark and certified to deliver assessments in line with PAS 2035 standards. Our NVQ-qualified team is equipped to carry out pre-installation building inspections for a variety of EEM’s, ensuring each property is suitable for proposed retrofit measures and compliant with relevant standards.

Bring clarity to your project scope.

Assessment

Our Retrofit Assessment team is comprised of fully qualified professionals accredited under TrustMark and certified to deliver assessments in line with PAS 2035 standards. Our NVQ-qualified team is equipped to carry out pre-installation building inspections for a variety of EEM’s, ensuring each property is suitable for proposed retrofit measures and compliant with relevant standards.

Bring clarity to your project scope.

Installation

All of our retrofit installations are carried out in-house by our own dedicated team, ensuring full accountability, quality control, and consistency across every project. Our installers are trained to work strictly in accordance with PAS 2030 standards and are well-versed in the specific evidence and documentation requirements set out by Retrofit Coordinators, funders, and TrustMark.

Pinpoint compliance requirements to protect your timeline.

Installation

All of our retrofit installations are carried out in-house by our own dedicated team, ensuring full accountability, quality control, and consistency across every project. Our installers are trained to work strictly in accordance with PAS 2030 standards and are well-versed in the specific evidence and documentation requirements set out by Retrofit Coordinators, funders, and TrustMark.

Pinpoint compliance requirements to protect your timeline.

Installation

All of our retrofit installations are carried out in-house by our own dedicated team, ensuring full accountability, quality control, and consistency across every project. Our installers are trained to work strictly in accordance with PAS 2030 standards and are well-versed in the specific evidence and documentation requirements set out by Retrofit Coordinators, funders, and TrustMark.

Pinpoint compliance requirements to protect your timeline.

Installation

All of our retrofit installations are carried out in-house by our own dedicated team, ensuring full accountability, quality control, and consistency across every project. Our installers are trained to work strictly in accordance with PAS 2030 standards and are well-versed in the specific evidence and documentation requirements set out by Retrofit Coordinators, funders, and TrustMark.

Pinpoint compliance requirements to protect your timeline.

Sign-off

Following every installation, we complete a full PAS-compliant suite of handover documents to ensure smooth and successful lodgement with both TrustMark and the relevant funding bodies. This includes detailed photographic evidence, manufacturer documentation, commissioning certificates and signed handover forms. Our team ensures that all documentation meets the strict criteria set out under PAS 2030/2035 and is cross-checked for accuracy and completeness before submission.

Turn compliance data into approved payments with our evidence-based approach.

Sign-off

Following every installation, we complete a full PAS-compliant suite of handover documents to ensure smooth and successful lodgement with both TrustMark and the relevant funding bodies. This includes detailed photographic evidence, manufacturer documentation, commissioning certificates and signed handover forms. Our team ensures that all documentation meets the strict criteria set out under PAS 2030/2035 and is cross-checked for accuracy and completeness before submission.

Turn compliance data into approved payments with our evidence-based approach.

Sign-off

Following every installation, we complete a full PAS-compliant suite of handover documents to ensure smooth and successful lodgement with both TrustMark and the relevant funding bodies. This includes detailed photographic evidence, manufacturer documentation, commissioning certificates and signed handover forms. Our team ensures that all documentation meets the strict criteria set out under PAS 2030/2035 and is cross-checked for accuracy and completeness before submission.

Turn compliance data into approved payments with our evidence-based approach.

Sign-off

Following every installation, we complete a full PAS-compliant suite of handover documents to ensure smooth and successful lodgement with both TrustMark and the relevant funding bodies. This includes detailed photographic evidence, manufacturer documentation, commissioning certificates and signed handover forms. Our team ensures that all documentation meets the strict criteria set out under PAS 2030/2035 and is cross-checked for accuracy and completeness before submission.

Turn compliance data into approved payments with our evidence-based approach.

northern retrofit hull vector
CLC Group Logo White

How We Delivered £800k Social Housing Retrofit With Zero Compliance Issues for CLC Group

When CLC Group needed a reliable partner for their largest social housing retrofit programme, they chose Northern Retrofit. Here's how our compliance-first approach delivered 89 properties on time, with zero payment delays and minimal resident disruption.

£800k

Project Value

89

Properties

Zero

Payment Delays

100%

Approval

"Northern Retrofit Limited delivered an excellent retrofit service on our social housing project, completing cavity wall and loft insulation alongside a range of other energy efficiency measures to a high standard.


Their team worked efficiently, caused minimal disruption to residents, and maintained strong communication throughout. Compliance was handled exceptionally well, with all checks and documentation completed promptly and accurately.


We’re very pleased with the results and would gladly work with them again."

Sue Matthews

Sue Matthews

Retrofit Compliance Manager at CLC

Our Bulletproof Retrofit Compliance Process

From assessment to sign-off, we make the retrofit process simple and stress-free for contractors

1

1

1

Pre-Installation Assessment

Before any work begins, our team conducts comprehensive site surveys and compliance planning:

  • Detailed site survey and risk assessment

  • Compliance planning to PAS2030/2035 standards

  • Material specification and approval

  • Method statement development and approval

2

2

2

Installation with Documentation

Every installation is documented in real-time to ensure complete evidence capture:

  • Real-time photo documentation at every stage

  • Geo-tagged evidence capture for funding bodies

  • Quality checks at critical installation points

  • Health & safety compliance monitoring

3

3

3

Post-Installation Verification

Comprehensive completion process ensures everything meets required standards:

  • Completion certificates issued immediately

  • Performance testing where required by standards

  • Handover documentation package compiled

  • Guarantee activation and registration

4

4

4

Submission & Project Sign-Off

Complete evidence packages submitted to funding bodies for rapid payment release:

  • Complete evidence package preparation

  • Funding body submission handled directly

  • Payment release coordination with your accounts

  • Project closure reporting provided

Complete Retrofit Solutions for Main Contractors

Reliable subcontractor services with bulletproof compliance and zero payment delays for your next retrofit project

Reliable subcontractor services with bulletproof compliance and zero payment delays for your next retrofit project

Internal Wall Insulation

Solid wall specialists for solid brick properties. Ideal for pre-1920s Yorkshire housing stock. Our IWI experts handle the most challenging retrofit projects with a professional finish ready for decoration.

Internal wall insulation installation showing insulation boards being fitted to interior wall in Yorkshire property

Learn more

Internal Wall Insulation

Solid wall specialists for solid brick properties. Ideal for pre-1920s Yorkshire housing stock. Our IWI experts handle the most challenging retrofit projects with a professional finish ready for decoration.

Internal wall insulation installation showing insulation boards being fitted to interior wall in Yorkshire property

Learn more

Internal wall insulation icon showing solid wall with interior insulation layer

Internal Wall Insulation

Solid wall specialists for solid brick properties. Ideal for pre-1920s Yorkshire housing stock. Our IWI experts handle the most challenging retrofit projects with a professional finish ready for decoration.

Learn more

Internal Wall Insulation

Solid wall specialists for solid brick properties. Ideal for pre-1920s Yorkshire housing stock. Our IWI experts handle the most challenging retrofit projects with a professional finish ready for decoration.

Internal wall insulation installation showing insulation boards being fitted to interior wall in Yorkshire property

Learn more

Cavity Wall Extraction

Professional removal of failed or problematic cavity wall insulation with full compliance documentation and remedial solutions.

Cavity wall extraction process removing failed insulation from Yorkshire property walls by Northern Retrofit specialist

Learn more

Cavity Wall Extraction

Professional removal of failed or problematic cavity wall insulation with full compliance documentation and remedial solutions.

Cavity wall extraction process removing failed insulation from Yorkshire property walls by Northern Retrofit specialist

Learn more

Cavity wall extraction icon showing removal of old insulation from cavity wall

Cavity Wall Extraction

Professional removal of failed or problematic cavity wall insulation with full compliance documentation and remedial solutions.

Learn more

Cavity Wall Extraction

Professional removal of failed or problematic cavity wall insulation with full compliance documentation and remedial solutions.

Cavity wall extraction process removing failed insulation from Yorkshire property walls by Northern Retrofit specialist

Learn more

Cavity Wall Insulation

PAS2030 compliant installation specialists. Perfect for social housing contracts across the UK. Our experienced team handles everything from pre-installation surveys to final certification.

Professional cavity wall insulation installation in Yorkshire home with Northern Retrofit installer drilling exterior wall

Learn more

Cavity Wall Insulation

PAS2030 compliant installation specialists. Perfect for social housing contracts across the UK. Our experienced team handles everything from pre-installation surveys to final certification.

Professional cavity wall insulation installation in Yorkshire home with Northern Retrofit installer drilling exterior wall

Learn more

Cavity wall insulation icon showing cross-section of insulated cavity wall

Cavity Wall Insulation

PAS2030 compliant installation specialists. Perfect for social housing contracts across the UK. Our experienced team handles everything from pre-installation surveys to final certification.

Learn more

Cavity Wall Insulation

PAS2030 compliant installation specialists. Perfect for social housing contracts across the UK. Our experienced team handles everything from pre-installation surveys to final certification.

Professional cavity wall insulation installation in Yorkshire home with Northern Retrofit installer drilling exterior wall

Learn more

Room in Roof Insulation

Specialist service for converted loft spaces. Complex access and configuration expertise improving comfort in upper floor flats.

Room in roof insulation installation in Yorkshire loft conversion with specialist insulation around sloped ceiling

Learn more

Room in Roof Insulation

Specialist service for converted loft spaces. Complex access and configuration expertise improving comfort in upper floor flats.

Room in roof insulation installation in Yorkshire loft conversion with specialist insulation around sloped ceiling

Learn more

Room in roof insulation icon showing converted loft space with insulated sloped walls

Room in Roof Insulation

Specialist service for converted loft spaces. Complex access and configuration expertise improving comfort in upper floor flats.

Learn more

Room in Roof Insulation

Specialist service for converted loft spaces. Complex access and configuration expertise improving comfort in upper floor flats.

Room in roof insulation installation in Yorkshire loft conversion with specialist insulation around sloped ceiling

Learn more

Solar Panel Installation

MCS certified renewable energy specialists. Complete solar installation service including grid connection and performance monitoring setup.

MCS certified solar panel installation on Yorkshire home roof by Northern Retrofit professional installers

Learn more

Solar Panel Installation

MCS certified renewable energy specialists. Complete solar installation service including grid connection and performance monitoring setup.

MCS certified solar panel installation on Yorkshire home roof by Northern Retrofit professional installers

Learn more

Solar panel icon showing photovoltaic panel generating renewable energy

Solar Panel Installation

MCS certified renewable energy specialists. Complete solar installation service including grid connection and performance monitoring setup.

Learn more

Solar Panel Installation

MCS certified renewable energy specialists. Complete solar installation service including grid connection and performance monitoring setup.

MCS certified solar panel installation on Yorkshire home roof by Northern Retrofit professional installers

Learn more

Windows and Doors

Certified retrofit window and door replacement with full compliance and fast turnaround.

A close up of a door handle on a door

Learn more

Windows and Doors

Certified retrofit window and door replacement with full compliance and fast turnaround.

A close up of a door handle on a door

Learn more

Windows and Doors

Certified retrofit window and door replacement with full compliance and fast turnaround.

Learn more

Windows and Doors

Certified retrofit window and door replacement with full compliance and fast turnaround.

A close up of a door handle on a door

Learn more

Loft Insulation

All configurations and access challenges. From standard lofts to complex installations. Our team handles awkward access and ensures proper ventilation compliance.

Professional loft insulation installation in Yorkshire home showing 270mm mineral wool being laid between roof joists

Learn more

Loft Insulation

All configurations and access challenges. From standard lofts to complex installations. Our team handles awkward access and ensures proper ventilation compliance.

Professional loft insulation installation in Yorkshire home showing 270mm mineral wool being laid between roof joists

Learn more

Loft insulation icon showing house roof section with thick insulation layer

Loft Insulation

All configurations and access challenges. From standard lofts to complex installations. Our team handles awkward access and ensures proper ventilation compliance.

Learn more

Loft Insulation

All configurations and access challenges. From standard lofts to complex installations. Our team handles awkward access and ensures proper ventilation compliance.

Professional loft insulation installation in Yorkshire home showing 270mm mineral wool being laid between roof joists

Learn more

Battery Storage Solutions

Complete battery installation service with grid integration and performance monitoring for residential and commercial projects.

Tesla Powerwall battery storage system installation in Yorkshire home garage by MCS certified Northern Retrofit engineer

Learn more

Battery Storage Solutions

Complete battery installation service with grid integration and performance monitoring for residential and commercial projects.

Tesla Powerwall battery storage system installation in Yorkshire home garage by MCS certified Northern Retrofit engineer

Learn more

Battery storage icon showing home battery system storing solar energy

Battery Storage Solutions

Complete battery installation service with grid integration and performance monitoring for residential and commercial projects.

Learn more

Battery Storage Solutions

Complete battery installation service with grid integration and performance monitoring for residential and commercial projects.

Tesla Powerwall battery storage system installation in Yorkshire home garage by MCS certified Northern Retrofit engineer

Learn more

Whole House Retrofit

Complete energy efficiency programmes combining multiple measures with full PAS2035 coordination and compliance management.

Complete whole house retrofit transformation showing before and after Yorkshire property energy efficiency improvements

Learn more

Whole House Retrofit

Complete energy efficiency programmes combining multiple measures with full PAS2035 coordination and compliance management.

Complete whole house retrofit transformation showing before and after Yorkshire property energy efficiency improvements

Learn more

Whole house retrofit icon showing complete home with multiple energy efficiency measures

Whole House Retrofit

Complete energy efficiency programmes combining multiple measures with full PAS2035 coordination and compliance management.

Learn more

Whole House Retrofit

Complete energy efficiency programmes combining multiple measures with full PAS2035 coordination and compliance management.

Complete whole house retrofit transformation showing before and after Yorkshire property energy efficiency improvements

Learn more

Air Tightness Testing

Professional airtightness testing services ensuring your retrofit projects meet PAS2035 compliance requirements with minimal disruption to occupants.

Learn more

Air Tightness Testing

Professional airtightness testing services ensuring your retrofit projects meet PAS2035 compliance requirements with minimal disruption to occupants.

Learn more

Air tightness testing Hull

Air Tightness Testing

Professional airtightness testing services ensuring your retrofit projects meet PAS2035 compliance requirements with minimal disruption to occupants.

Learn more

Air Tightness Testing

Professional airtightness testing services ensuring your retrofit projects meet PAS2035 compliance requirements with minimal disruption to occupants.

Learn more

Why Main Contractors Choose Northern Retrofit

We stand behind our work with comprehensive guarantees and insurance

PAS2030/2035 Certified

Latest retrofit standards with qualified coordinators and assessors ensuring every project meets current compliance requirements.

TrustMark Accredited

Government-approved installer status providing confidence to clients and funding bodies.

Evidence-Based Process

Every installation fully documented with geo-tagged photography and real-time compliance tracking.

Zero Payment Delays

98% first-time submission success rate with direct funding body relationships ensuring rapid payment release.

Local Yorkshire Expertise

Based in Beverley with deep understanding of Yorkshire housing stock and established local authority relationships.

Full Insurance & Compliance

£10M public liability insurance, all certifications current, comprehensive health & safety policies.

Proven Capacity

40+ qualified installers and assessors with capability to handle projects from single properties to 200+ unit programmes.

Established Track Record

Over £2.5M in retrofit projects completed across Yorkshire with major contractors including CLC Group, Wates, and local authorities.

Contact Yorkshire's Leading Retrofit Subcontractor

Transform your compliance headaches into guaranteed payment approvals

Tell us about your retrofit project and we'll provide a detailed quote with compliance guarantees and delivery timeline.

Tell us about your retrofit project and we'll provide a detailed quote with compliance guarantees and delivery timeline.

Tell us about your retrofit project and we'll provide a detailed quote with compliance guarantees and delivery timeline.

Get Started in 3 Steps:

Initial Discussion

Contact our team to discuss your project requirements, timescales, and compliance needs.

Detailed Proposal

We'll provide a comprehensive tender response including methodology, programme, and evidence package specification.

Project Delivery

Professional project management with real-time compliance tracking and guaranteed zero payment delays.

Contact Our Contracts Team

We respond within 2 hours

Hull, Leeds, Sheffield, York & surrounding areas

Beverley, Hull, York, Leeds, Sheffield, Manchester and surrounding areas.

Accredited by the UK's Most Trusted Retrofit Schemes
Accredited by the UK's Most Trusted Retrofit Schemes