Overview
The Airey house is a prefabricated, precast concrete house from the period immediately after the Second World War, built between 1945 and 1955. It was designed by Frederick Gibberd and was one of the systems the government commissioned to deliver homes quickly and cheaply at a time of severe housing shortage.
The houses were made by William Airey & Sons Ltd, a Leeds-based company that specialised in prefabricated building. Pre-made components were brought to site and assembled rapidly, which suited the post-war programme on both speed and cost.
Airey houses are found mainly where bomb damage had been heavy or where housing was needed in a hurry: parts of London, the Midlands, and northern cities such as Manchester and Liverpool. Rural areas housing returning servicemen and their families also received them.
Typical characteristics & construction
The structural frame is made up of precast concrete columns. They were designed to be strong yet light enough to transport and erect quickly, and they carry the building. Precast concrete panels are fixed to this frame to form the external walls, and the panels are often finished with a cement render for extra weatherproofing and insulation.
Roofs are pitched and covered with asbestos cement sheets or tiles. At the time the material was chosen for its durability and fire resistance. Ground floors are concrete. Upper floors are timber joists and floorboards, and internal walls are timber or plasterboard.
Windows and doors are often still the originals and may be in poor condition.
| Element | Typical construction | Inspection focus |
|---|---|---|
| Main frame | Precast concrete columns | Spalling, exposed reinforcement, deterioration |
| External walls | Precast concrete panels fixed to the frame, often rendered in cement | Cracking, spalling, damaged or failing render |
| Roof | Pitched, covered with asbestos cement sheets or tiles | Damaged or missing coverings, moss and algae, asbestos condition |
| Floors | Concrete ground floor; timber joists and floorboards above | Dampness to the ground floor, wear to upper floors |
| Internal walls | Timber or plasterboard | Cracking, movement, damp and mould |
| Windows and doors | Often original, timber frames | Rot, decay, failed seals, condensation |
Potential hazards & inspection priorities
Primary concern: the concrete structure
The precast columns and panels deteriorate over time. The defect to look for is spalling, where the surface of the concrete breaks away and exposes the steel reinforcement inside. Once that happens the structure is weakened and there is a safety risk. In practice, where spalling is present, significant repairs or even replacement of the affected components can follow.
The Airey house is designated defective under the Housing Defects Act 1984 because of these structural and material issues. As a result, owners may be eligible for government grants or assistance towards the necessary repairs and improvements.
Secondary concerns: asbestos, damp and windows
Asbestos in the roof coverings is the other significant risk. Undisturbed and in good condition, asbestos-containing materials may not pose an immediate risk. Once damaged or deteriorating, they can release fibres which, if inhaled, cause serious illness, including lung cancer and asbestosis. Any asbestos-containing materials, such as roof sheets or insulation, should be assessed by a qualified asbestos surveyor.
Damp and mould are a common issue in properties of this type, particularly where the render has broken down and moisture has got into the concrete panels. Poor insulation and ventilation make it worse. Original timber windows and doors are prone to rot and decay, and older glazing tends to be inefficient and to suffer from condensation.
Long-term consideration: insulation and energy efficiency
Airey houses were not designed to modern energy efficiency standards and are often poorly insulated, which means higher heating bills and a less comfortable home. Retrofitting modern insulation is challenging and costly, but it is the main route to better efficiency and lower heating costs.
What a thorough inspection covers
- Roof: damaged, worn, missing or broken coverings, particularly asbestos cement, and moss or algae growth that points to moisture
- External walls: cracks or spalling to the concrete panels, and damaged or deteriorating render that compromises weatherproofing
- Windows and doors: frames, seals and glazing, and rot or damage to timber frames
- Floors: dampness or damage to the concrete ground floor, and wear or damage to upper floor joists and boards
- Internal walls: cracking or movement that may indicate structural issues, and damp or mould where external walls may be compromised
- Roof space, where accessible: the roof structure, timbers, insulation and any water ingress
- Electrics: the consumer unit, wiring and sockets, outdated or unsafe wiring, earthing and bonding
- Plumbing and heating: leaks or damage, especially where pipes are concealed in walls or floors, and the boiler, radiators and heating system
Is this house right for you?
An Airey house is a historically significant type, built to solve the post-war housing crisis, and it shows mid-twentieth-century construction methods clearly. It also comes with risks that are built into the system itself, so it is a purchase to make on the evidence of a careful inspection rather than on appearance.
- Commission a full building survey
- Establish the condition of the precast concrete columns and panels before anything else
- Have any asbestos-containing materials assessed by a qualified asbestos surveyor
- Allow for improving insulation, windows and doors over time
Knowing the typical defects and hazards of these houses makes for a better-informed decision, and it helps make sure the repairs and improvements that keep the house safe and comfortable get done.
Mortgage & resale considerations
The designation of Airey houses as defective under the Housing Defects Act 1984 is the central point to understand before buying. It reflects the structural and material issues set out above.
The same classification means owners may be eligible for government grants or assistance to carry out the necessary repairs and improvements, so the repair history of the house is worth establishing.
What a survey can — and cannot — tell you
A building survey provides an informed assessment of the visible condition and construction of an Airey house. Inspections are non-intrusive and limited to areas that are accessible at the time of inspection.
- Identify visible spalling and cracking to the precast concrete columns and panels
- Assess signs of dampness, mould and moisture ingress, including through failed render
- Comment on roof coverings, including suspected asbestos cement, and the external envelope
- Review the general condition of accessible floors, walls, windows, doors and services
- Highlight defects that may require repair, monitoring, or further investigation
However, there are limitations to what a survey can determine without intrusive investigation.
- Confirm the condition of reinforcement concealed within the precast concrete
- Assess structural elements hidden behind render, finishes or linings
- Confirm whether materials contain asbestos without specialist sampling
- Inspect areas that are inaccessible or covered at the time of inspection
Where higher-risk indicators are identified, further specialist or intrusive investigation may be recommended.
