The shelter continuum it belongs to
Disaster housing runs in stages. First comes emergency shelter — tents, tarpaulins, collective centres — measured in days and weeks. Then transitional shelter, designed for the long middle period while land, permits and reconstruction catch up: months to a few years of use. Finally permanent housing. The stages blur in practice — an emergency tent on a good foundation is already transitional thinking — but the classification matters because it changes what you buy: a product optimised for week one is usually wrong for year two, and buying for year two is what transitional shelter means.
The design principles behind it
Transitional shelter doctrine, developed across UNHCR and Shelter Centre practice, rests on a few principles. Upgradeable: the structure accepts better cladding, insulation or extensions as resources arrive. Relocatable: it can move when land tenure or camp layout changes, without being destroyed. Reusable: materials recover value at end of use. And locally repairable: standard tools and materials, not proprietary parts nobody can source after the programme ends. The Sphere minimum of 3.5 square metres of covered living space per person sets the size floor; climate-appropriate ventilation and heating provision set the comfort floor.
Where inflatables fit — and where they do not
Inflatable shelters map well onto the transitional phase for three reasons: they relocate without demolition, they pack small enough to warehouse between emergencies, and they deploy with small crews. Their limits are honest ones: a fabric skin is not a wall, so for multi-year occupancy in harsh climates a rigid transitional shelter — timber frame, sandwich panel, container conversion — carries winters and wear better, and local-materials construction supports the local economy in ways imported products cannot. The strongest programmes mix: inflatable units for the fast first wave and relocatable stock, rigid transitional shelters for the settled phase.
What procurement should actually check
Beyond the shelter itself, three things decide whether a transitional programme works. Land tenure: a relocatable shelter solves the most common failure — occupants forced to move off land they never had rights to. Standards: ask suppliers which recognised standards their unit is designed to, and what documentation backs structural and fire claims — we publish no load, wind or fire figures without third-party test data, and we apply the same test to ourselves as to anyone. And exit strategy: what happens to the unit when permanent housing arrives — resale, redeployment, or disposal — should be part of the purchase decision, not an afterthought.