24/7 repairs & maintenance across Wales and the South West

What we do

Retrofit & Energy Efficiency

External and internal wall insulation, solar PV, infrared heating and intelligent energy systems from accredited installers.

  • PAS 2030 / 2035
  • MCS & TrustMark
  • EWI specialists

ASW installs retrofit systems that make homes warmer, more energy efficient and more affordable to heat – including External and Internal Wall Insulation, solar PV, Intelligent Energy Systems (IES) and infrared heating.

We are a PAS 2030 / PAS 2035 accredited BBA installer for External Wall Insulation and TrustMark registered, with MCS (Microgeneration Certification Scheme) and RECC accreditation for renewable installations.

Retrofit services

  • External Wall Insulation (EWI)
  • Internal Wall Insulation (IWI)
  • Roof renewals, loft insulation and rainwater goods
  • Solar and PV systems
  • Infrared (IR) heating
  • Intelligent Energy Systems (IES)

Results residents can feel

Our EWI schemes improve both the appearance and the thermal performance of homes. After one recent installation of EWI, roofing and communal doors to five blocks of flats for the Vale of Glamorgan, residents noticed a reduction in heating costs and a marked increase in comfort.

We have completed EWI projects – including roof renewals, loft insulation, rainwater goods and balcony repairs – for clients such as Swansea Council and Bron Afon Community Housing, and we are working with Valleys to Coast on infrared heating with solar PV – and potentially battery storage – as a replacement for gas-fired central heating, together with Intelligent Energy Systems.

Design & Build retrofit

We also deliver retrofit design and assessment projects under Design & Build contracts, keeping tenants and housing associations informed throughout and providing the information every stakeholder needs, when they need it.

The recent installation of External Wall Insulation (EWI), roofing, and communal doors by ASW to the 5 blocks of flats has been excellent. From start to finish, the quality of their work and the final result exceeded our expectations.

Mark Speed Project Manager, Vale of Glamorgan Council

Need a reliable property maintenance partner?

Talk to our team about reactive, planned and void maintenance, adaptations, fire safety, retrofit or facilities management.