Call Us: 01443 809770
Modern glass staircase and smooth white plastered walls in a thermally efficient home following internal wall insulation

Specialist Internal Wall Insulation Across South Wales and South West England
Transform cold solid walls into energy-efficient spaces with our PAS 2035 certified retrofit team. Enjoy a complete, seamless finish alongside our sister company, Global Plastering.

Speak to our PAS 2030 team today
01443 809770
Serving South Wales & The South West

Struggling with a Cold House & High Bills?

Eliminate heat loss and safeguard your home against rising energy costs today.

Book your retrofit assessment

Transforming your home with internal wall insulation in Ferndale

If you live in a traditional solid-walled home in Ferndale or across the wider Rhondda Cynon Taf region, you may find that your living space struggles to retain heat during the colder months. Global Energy Insulation specialises in internal wall insulation, a highly effective solution for properties where external cladding is not suitable or desired. By applying high-performance insulation boards to the interior side of your external walls, we create a robust thermal barrier that stops heat loss in its tracks, helping to keep your rooms warm while significantly reducing your energy bills.

South Wales and South West England

01443 809770

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A modern open-plan dining room with smooth white walls and blue chairs, demonstrating a high-quality interior finish following internal wall insulation
PAS 2035 Accredited IWI Specialists

Why Choose Us for Internal Wall Insulation in Ferndale?

How our internal insulation process works

Our approach is rooted in technical expertise and compliance with PAS 2035 standards. We begin with a thorough survey of your property to assess existing wall conditions and ventilation needs. Once the plan is finalised, our skilled technicians fit precision-engineered insulation boards to your walls. This system acts as a shield against the cold, effectively managing thermal bridging and preventing condensation. We understand that your home is your sanctuary, which is why we coordinate the entire installation process to ensure minimal disruption to your daily life.

Why choose internal wall insulation for your property

Installing internal wall insulation is one of the most effective ways to improve your home energy efficiency and boost your EPC rating. By upgrading your insulation, you effectively eliminate cold spots and significantly reduce the risk of damp and black mould caused by trapped condensation. Beyond the immediate comfort of a warmer house, this investment adds long-term value to your property. Our work is fully PAS 2030 compliant and supported by SWIGA-backed insurance guarantees, giving you complete peace of mind that your home is in safe hands. Book your retrofit assessment today to see how much you could save.

Professional finishing with our sister company Global Plastering

We pride ourselves on offering a comprehensive, end-to-end service for our clients. Because internal wall insulation requires the walls to be re-skimmed and finished to a high standard, we work closely with our sister company, Global Plastering. This ensures that once the insulation boards are installed, your internal walls are finished with professional, high-quality plasterwork, leaving your rooms looking as good as new. You receive the energy-saving benefits of modern insulation alongside the expert, aesthetic finish of a premium plastering service, all under one roof.

Is internal wall insulation right for my home

Internal wall insulation is particularly suitable for period properties, Victorian terraces, and homes where changing the exterior appearance is restricted by planning permissions or conservation rules. Whether you live in a traditional stone-built cottage or a more modern flat, we ensure every installation meets current UK building regulations. Our team is experienced in handling unique construction types common throughout South Wales and the South West. If you are a landlord looking to meet MEES requirements or a homeowner tired of high heating costs, we can guide you through the process from start to finish. Contact us today on 01443 809770 to discuss your specific needs and request a free, no-obligation quote.

Why Choose Global Energy Insulation?

Your trusted PAS 2035 retrofit and internal wall insulation experts, delivering dramatic heat loss reduction, lower energy bills, and guaranteed peace of mind across Ferndale, South Wales, and the South West.

Local South Wales Experts

Based in Ferndale, we cover Rhondda Cynon Taf and a 60-mile radius, providing tailored cold house solutions for all local property types, from solid stone to terraces.

PAS 2030 & SWIGA Backed

Fully PAS 2030 compliant, CHAS accredited, and SWIGA backed, meaning your IWI installation comes with complete protection and robust Insurance Backed Guarantees.

Complete End-to-End Service

Working seamlessly with our sister company, Global Plastering, we manage everything from premium thermal boarding to a flawless, ready-to-decorate internal finish.

Lower Bills & Better EPC

Stop thermal bridging and eliminate damp. Our cold wall treatments drastically cut winter heating costs and instantly improve your property's EPC rating.

A newly finished room with pristine white plastered walls and grey carpet, showcasing the high-quality finish after internal wall insulation by Global Energy Insulation in South Wales.
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Energy Insulation Services Across South Wales and South West England: 01443 809770

Areas We Cover for Internal Wall Insulation in Ferndale

We Provide Internal Wall Insulation in Ferndale Across Rhondda Cynon Taf

Abercarn Abercynon Aberdare Aberhonddu / Brecon Aberpennar / Mountain Ash Abersychan Abertawe / Swansea Abertyleri / Abertillery Bargoed / Bargod Barri / Barry Blaenavon Brynmawr Burnham-On-Sea Caerdydd / Cardiff Caerffili / Caerphilly Caerllion / Caerleon Chepstow Cil-Y-Coed / Caldicot Clevedon Crickhowell Cwmbrân Ferndale Glyn Ebwy / Ebbw Vale Glyn-Nedd / Glyn-Neath Gorseinon Llandeilo Llanelli Llanfair-Ym-Muallt / Builth Wells Llanilltud Fawr / Llantwit Major Llantrisant Llanwrtyd Wells Llanymddyfri / Llandovery Loughor Lynton Maesteg Merthyr Tudful / Merthyr Tydfil Minehead Nailsea Nantyglo Neath Newport Penarth Pencoed Pen-Y-Bont Ar Ogwr / Bridgend Pontardawe Pontarddulais Pontllanfraith Pontycymer Pontypridd Pont-Y-Pŵl / Pontypool Porthcawl Porth Tywyn / Burry Port Portishead Port Talbot Rhisga / Risca Rhondda Rhydaman / Ammanford Rhymni / Rhymney Talbot Green Talgarth Tonypandy Trecceln / Newbridge Tredegar Trefynwy / Monmouth Treharris Treherbert Treorci / Treorchy Usk Watchet Weston-Super-Mare Y Blaenau / Blaina Y Bont-Faen / Cowbridge Y Coed Duon / Blackwood Y Fenni / Abergavenny Y Gelli Gandryll / Hay-On-Wye Ystradgynlais Ystrad Mynach

What Our Clients Say About Global Energy Insulation

"Fantastic service from the team at Global Energy Insulation. The external wall insulation has made our home noticeably warmer, eliminated cold draughts, and our heating bills have dropped significantly. High-quality work all around."

K. Davies (Swansea)

"As a landlord needing EPC improvements, I highly recommend their PAS 2035 retrofit services. The internal wall insulation was installed professionally, and their sister company, Global Plastering, left a flawless finish."

G. Harrison (Cardiff)

"Professional from start to finish. The loft and cavity wall insulation were completed quickly by a fully accredited team. Having the SWIGA insurance-backed guarantee gives us complete peace of mind."

S. O'Connor (Newport)

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FAQ

Frequently Asked Questions

Answers to common questions about our internal wall insulation and PAS 2035 retrofit services in South Wales and South West England and across South Wales.

How much space will I lose with Internal Wall Insulation?

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This is a common concern for homeowners in smaller terraced houses. Modern high-performance insulation boards are incredibly efficient, meaning we can achieve great results with boards as thin as 50mm to 100mm. While you will lose a tiny bit of floor space, the trade-off is a room that is actually usable and warm all year round.

Does IWI cause damp or mould?

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If installed incorrectly by an unaccredited builder, IWI can cause issues. However, because we follow PAS 2035 standards, we assess the ventilation of your home as part of the process. We use vapour barriers and ensure proper airflow so that moisture doesn't get trapped. When done right, IWI actually reduces the risk of surface mould by getting rid of cold spots on your walls.

How long does it take to insulate a room?

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A typical room can usually be insulated and boarded within a couple of days. The plastering and drying time will add a bit more to the schedule. Because we use our own sister company, Global Plastering, we can move from insulation to finishing much faster than companies that have to wait for external subcontractors to become available.

Is there funding available for IWI in Rhondda Cynon Taf?

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There are often various government grants available, such as ECO4 or the Great British Insulation Scheme, depending on your circumstances and your property's current EPC rating. As PAS 2030 installers, we can often help you navigate these options. Even if you aren't eligible for a grant, the long-term savings on your energy bills make IWI a very smart investment.

Still have questions? Contact our South Wales and South West England Energy Insulation experts today!

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Proudly Serving South Wales, The South West & Surrounding Areas

Global Energy Insulation is your trusted local specialist dedicated to providing definitive cold house solutions and drastically reducing heat loss. Operating from our base in Ferndale, we cover a 50–60 mile radius across South Wales and South West England. From premium External Wall Insulation (EWI) and silicone rendering to comprehensive PAS 2035 whole-house retrofit services, we help homeowners and landlords improve EPC ratings and slash high energy bills.

Our Primary Service Areas

South Wales

  • Ferndale & Rhondda Cynon Taf
  • Cardiff, Newport & Swansea
  • Bridgend, Merthyr Tydfil & Caerphilly
  • Brecon & surrounding Valleys
  • Ideal for terraced, semi-detached & solid wall homes

South West England

  • Bristol & Bath
  • Gloucester & Gloucestershire
  • Somerset region
  • Upgrading Victorian, Edwardian & non-traditional builds
  • Expert solutions for thermal bridging

The Global Advantage

  • PAS 2030 compliant & SWIGA backed guarantees
  • CHAS accredited & fully insured (Co. No: 05875199)
  • Effortless MEES compliance for local landlords
  • Seamless interior finishing by our sister company, Global Plastering

Stop Losing Heat Today

Don't wait for another freezing winter—safeguard your home against rising energy costs today.

Call 01443 809770

If your specific location within our 50–60 mile radius isn't listed, please get in touch. We regularly travel across the region to deliver accredited home energy efficiency upgrades.

Our South Wales & South West Coverage

Map shows our extensive service radius across Wales and England for EWI, IWI, rendering, and retrofit projects.

Stop heat loss and lower your energy bills with expert internal wall insulation! Get your free, no-obligation quote today.
Call South Wales and South West England's trusted Energy Insulation and PAS 2035 specialists on 01443 809770.

01443 809770 info@globalenergyinsulation.co.uk