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bunker24.lt offers four types of protective structures. Each has its own strengths, so there is no universal “best” solution. The table gives a brief comparative overview; you will find detailed information on each type's page. A comparison of all types with their models is on the Bunkers page.
| Block bunkers | Underground bunkers | Metal bunkers | Extra bunkers | |
|---|---|---|---|---|
| Construction | Massive interlocking precast reinforced concrete blocks | Corrugated steel pipe or tank | Metal bunker (welded steel shell) | Factory-assembled reinforced concrete module |
| Location | Above ground, partly buried or earth-covered, adaptable to the terrain | Underground | Underground (buried) | Above ground, no need to bury |
| Capacity | From small to large groups (standard designs for 10–90 people) | Depends on diameter and length | Small groups, a family | Small groups |
| Indicative lead times* | Installation – 10–30 days once the foundation is ready (BB-90 – according to the design) | From 4 weeks; excavation works required | Manufacture – from 2 weeks | Delivery – from 3 weeks, placement – within 1 day |
| Relocatability | Can be dismantled and the blocks reused | Limited (must be dug out) | Can be dug out and relocated | Easy to relocate |
| Peacetime use | Storeroom, technical rooms | Storeroom | Small storeroom | Auxiliary room |
| Best suited to | State institutions, municipalities, schools, kindergartens, large businesses; sites with specific terrain | Blast shelter for private properties and business premises | Blast shelter for private and business use when needed urgently | When protection is needed urgently and without earthworks |
* Lead times are indicative. The exact lead time is given in the quote: it depends on the model, configuration, design work and site conditions.
STR 2.07.02:2024 (Lithuanian construction technical regulation on the design and installation of shelters) provides that a shelter is designed in cast-in-situ or precast reinforced concrete or masonry. Therefore, where a shelter is mandatory under the regulation or state funding is being sought, we recommend block bunkers. Extra bunkers are quick-access shelters; we do not declare their compliance with the STR. Metal and corrugated steel solutions are suitable for private use and additional protection, but they should not be regarded as a shelter installed within the meaning of the STR.
Block bunkers are our main line for institutions and also the most flexible solution. Massive reinforced concrete blocks make it possible to build an above-ground, partly buried or earth-covered shelter for 10 to 90 people, and our structural engineers adapt the layout to the plot and terrain. Certified blast-resistant doors (4.4 bar) are installed, and if necessary the structure can be dismantled and the blocks reused elsewhere.
Underground bunkers are made in various diameters and lengths. The entrance can be vertical, inclined or through a door at the end of the tank.
Metal bunkers are a quickly manufactured underground blast shelter for private and business use, with a vertical or inclined entrance. Standard models are always coated externally with polyurethane foam and waterproofing and fitted with ventilation.
Extra bunkers are delivered ready-fitted: with protective doors and outlets for ventilation and electricity. They do not need to be buried.
Our engineers will assess the number of people, the plot and the timeline, and then suggest one or more suitable options.
Our design engineers will assess your site, calculate the required floor area, recommend the most suitable bunker type and prepare the design solutions in line with STR 2.07.02:2024 (Lithuanian construction technical regulation on the design and installation of shelters). Price on request.
The information on this page is for general guidance only and does not replace legislation or the designer’s decisions. Always check the requirements applicable to a specific site against the current versions of the legislation.
Information updated on 22 September 2026.
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