What types of wall types are suitable for insulation?
Twin leaf walls consist of two layers of masonry block/brick laid parallel to each other with an open air gap between them. It is most likely the case if you have a red brick finish that there is an open cavity and your property could be suitable for cavity bonded beads.
A Hollow Block wall is usually a 9" block with 2 hollow cores. Made from a lighter concrete, they were commonly used by builders to speed up construction and for cost reasons. If your walls are Hollow Block you will not be able to pump with bonded beads. Your home would need to be assessed to ascertain if Internal or External insulation would be the recommended solution for you.
A solid wall would typically be block laid flat or poured concrete. As there is no cavity at all and the walls are solid, External Insulation is often recommended for these properties. The Thermal Mass of the wall would need to be assessed to ascertain if Internal or External insulation would be the recommended solution for you.
Internal Dry Lining
Internal dry-lining is often recommended if your home is unsuitable for Cavity pumping or External Insulation. Dry lining involves fixing insulation slabs to your external walls from the inside/internally. Because the insulation is being applied internally you will lose space in your rooms so it is advised to carefully plan this work to ensure furniture & fixings can be reused post installation. The complete system consisting of vapour barrier, insulation, plasterboard & skim finish can amount to over 95mm. Depending on the scale of works you may be advised to vacate the premises for the duration of works. Dry lining your entire home is a considerable project which also involves plumbing & electrical work & bathrooms & kitchens may need to be refitted post insulation. An average upgrade can take 2-3 weeks for full completion.
