{"id":2846,"date":"2026-08-25T14:09:37","date_gmt":"2026-08-25T14:09:37","guid":{"rendered":"https:\/\/www.vikkins.com\/?p=2846"},"modified":"2026-08-25T14:09:37","modified_gmt":"2026-08-25T14:09:37","slug":"ultra-low-temperature-cold-storage-specs","status":"publish","type":"post","link":"https:\/\/www.vikkins.com\/fr\/ultra-low-temperature-cold-storage-specs\/","title":{"rendered":"Why Ultra-Low Temperature Cold Storage Is Suddenly Everywhere"},"content":{"rendered":"

Ultra-low temperature cold storage is expanding across North America \u2014 cold-chain operators are announcing blast-freezing rooms, tuna-grade freezers and pharma-adjacent storage running from \u221240\u00b0C down to \u221270\u00b0C. If you are planning one, the most expensive mistake is assuming a ULT room is just “a colder freezer”. Below \u221240\u00b0C, the physics changes \u2014 and so must the panel spec, the floor detail and the steel structure around it.<\/p>\n

\"ultra-low<\/p>\n

What Changes Below \u221240\u00b0C<\/h2>\n

1. Panel core and thickness<\/h3>\n

Standard freezer rooms typically run PIR panels around 150\u00a0mm. ULT rooms need 200\u00a0mm or more \u2014 often a double-panel build-up with staggered joints \u2014 because every extra degree of differential drives heat gain and frost load. PIR remains the workhorse core: closed-cell, dimensionally stable at deep-freeze temperatures, and available with fire-rated facings. (For a cost comparison of cores, see our guide: Sandwich Panel Cost: PUF vs PIR vs Mineral Wool<\/a>.)<\/p>\n

2. Vapor sealing and thermal bridging<\/h3>\n

At ULT, any vapor path becomes an ice-maker. Panel joints need continuous vapor-tight sealing on the warm side; fasteners and structural penetrations must be thermally broken. A single unsealed camlock pocket can grow an ice column that pries a joint open within a season.<\/p>\n

\"ultra-low<\/p>\n

3. The floor is a project of its own<\/h3>\n

Ground-bearing ULT floors will freeze the soil beneath them and heave the slab unless you design against it: insulated sub-slab build-up plus a frost-heave prevention layer (ventilated ducts or heated glycol loops). Retrofit is far costlier than doing it at first pour.<\/p>\n

4. Doors, airlocks and openings<\/h3>\n

ULT rooms live or die at the openings. Specify heated door frames and seals, vestibule airlocks between temperature zones, and pressure-relief ports sized for deep-freeze air density. (Spec details in Portes de chambre froide : 6 sp\u00e9cifications qui font ou d\u00e9font l'\u00e9tanch\u00e9it\u00e9<\/a>.)<\/p>\n

\"solution<\/p>\n

The Steel Structure Around a ULT Room<\/h2>\n

Deep-freeze envelopes move. Steel members inside the cold zone contract; connection detailing must allow it without tearing panel joints. The cleanest solution is usually an external structural shell \u2014 a portal-frame building carrying roof, services and mezzanines \u2014 with the ULT box built as an independent envelope inside. That is the package we engineer as one scope: structural steel and insulated panels from the same factory, detailed to work together. (Background: Modular Cold Rooms: The Complete B2B Buyer\u2019s Guide<\/a>.)<\/p>\n

Build Sequence and Lead Time<\/h2>\n

Because the steel shell and the panel envelope come from one supplier, fabrication runs in parallel: structure and panels are produced together, shipped containerized, and bolted up in sequence on site. Our manufacturing bases cover 80,000\u00a0m\u00b2 including a 40,000\u00a0m\u00b2 workshop, producing 30,000+ tons\/yr of structural steel and over 5,000,000\u00a0m\u00b2\/yr of sandwich panels \u2014 ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, CE and CWB certified \u2014 with typical 30\u201345 day production lead times and worldwide containerized delivery.<\/p>\n

ULT Planning Checklist<\/h2>\n

\u2022 Design temperature and pull-down profile defined?
\n\u2022 Panel core, thickness and joint system rated for the differential?
\n\u2022 Warm-side vapor sealing continuous \u2014 including penetrations?
\n\u2022 Sub-slab insulation plus frost-heave prevention in the floor design?
\n\u2022 Heated doors, airlocks and pressure relief specified?
\n\u2022 Structure detailed for thermal movement \u2014 or external shell + independent box?<\/p>\n

Planning an Ultra-Low Temperature Build?<\/h2>\n

Send us your drawings or a rough spec \u2014 chamber size, design temperature, location \u2014 and we will return a technical and commercial proposal covering the steel structure and panel envelope as one package.<\/p>\n

FAQ: Can a standard freezer room be converted to ULT? Rarely in a cost-effective way. Ultra-low temperature cold storage needs thicker PIR\/PU panels (200mm or more), a continuous vapor barrier on the warm side, floor heave protection, and steel connections detailed for deep-frost movement. Retrofitting all four into a standard \u221218\u00b0C room usually costs more than building the ULT envelope right the first time. If you are weighing both options, send us your drawings \u2014 we will give you a straight answer on which way is cheaper.<\/p>","protected":false},"excerpt":{"rendered":"

Ultra-low temperature cold storage is expanding across North America \u2014 cold-chain operators are announcing blast-freezing rooms, tuna-grade freezers and pharma-adjacent storage running from \u221240\u00b0C down to \u221270\u00b0C. If you are planning one, the most expensive mistake is assuming a ULT room is just “a colder freezer”. Below \u221240\u00b0C, the physics changes \u2014 and so must […]<\/p>\n","protected":false},"author":3,"featured_media":1753,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[16],"tags":[],"class_list":["post-2846","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-insight"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/posts\/2846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/comments?post=2846"}],"version-history":[{"count":1,"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/posts\/2846\/revisions"}],"predecessor-version":[{"id":2847,"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/posts\/2846\/revisions\/2847"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/media\/1753"}],"wp:attachment":[{"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/media?parent=2846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/categories?post=2846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vikkins.com\/fr\/wp-json\/wp\/v2\/tags?post=2846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}