Expert Guidance,
End-to-End

The funded retrofit market is growing fast, with millions of pounds in government funding available across schemes like ECO4, SHDF, WHLG and GBIS.

To succeed, you need a partner who knows the standards, systems and materials inside out. With 20 years’ experience, Provincial Seals (PSL) ensures your projects are compliant, efficient and deliver maximum value.

We go beyond mandatory coordination. PSL provides full system design, precise material specifications, installer guidance, and accredited training – all backed by a 48-hour SLA. From initial planning to final sign-off, we’re with you every step of the way.

The Retrofit
Coordinator

Mandatory under PAS2035, coordinators oversee compliance, documentation, risk management and quality control. Our dedicated team ensures your projects meet every requirement while unlocking funding streams quickly and effectively.

The Retrofit
Designer

Our designers create detailed, compliant system designs, recommend remedial actions, and ensure ventilation and thermal bridging strategies are correctly specified. With PSL, you can be confident your project is optimised for performance, compliance and efficiency.

How It Works

  1. Share your funding stream (ECO4, SHDF, WHLG, GBIS), the measures you’re installing, and estimated volumes.
  2. We design or review your project using market-leading ECMK software to ensure PAS compliance.
  3. We supply tailored systems and materials.
  4. We conduct site visits, verify installation quality, review final paperwork and submit evidence to TrustMark – unlocking your funding.

Our Retrofit Materials

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Cavity Wall Insulation
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Internal Wall Insulation

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External Wall Insulation

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Flat Roof Insulation

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Underfloor Insulation

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Loft Insulation

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Ventilation

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Solar PV

Funding Streams

Energy Company
Obligation (ECO4)

The UK's largest retrofit funding programme, helping eligible households access free or more cost-effective energy efficiency improvements, including insulation, heating upgrades and ventilation systems. 

Social Housing
Decarbonisation Fund (SHDF)

Government grants for housing associations and local authorities to upgrade social housing stock with energy efficiency measures and low-carbon heating systems.

Warm Homes: Local Grant (WHLG)

Administered by local authorities, the initiative enables low-income households to enhance energy efficiency and adopt low-carbon heating solutions.

Great British Insulation
Scheme (GBIS)

A broader programme offering cavity wall, loft and underfloor insulation to eligible homeowners and tenants across Great Britain.

Why PSL?

20 years’ industry experience
Hundreds of government-funded projects completed
Millions in funding unlocked since 2018
Design, quotes and materials lists delivered in as little as 48 hours

What Our Customers Say

Paul King
Net Zero Renewables

"We've worked with PSL for more than three years now. Their expertise across retrofit schemes is unmatched. From system design to materials delivery, the whole team consistently delivers. They understand the pressures we're under and always find solutions. We wouldn't work with anyone else."

Lewis McNeill
Head of Operations, DHMS Group

"Since day one, Julie and the team at Provincial Seals have been very flexible, adaptable and competitively priced with our requirements. Nothing is ever too much of a problem and the communication has been top draw on all levels, from order placement to delivery comms. We’re looking forward to what the future brings and we’re confident that PSL will be with us every step of the way."

Daniel Marsden
MD of Eco Home Insulation

“It’s refreshing to be trained by people who have real life experience and in depth knowledge of both the systems and the accompanying aspects.”

Working on a 
PAS2035 Retrofit Project?