Porkka Walk-In –Clean and –Cold Rooms

Walk-In Cold Rooms are always tailored to the customer’s needs. Porkka has for decades designed individual temperature controlled clean and cold room solutions. “Walk-In” is a pan-European term that includes large clean, chiller and freezer rooms that can be accessed. The principle of operation for clean rooms is based on a high air pressure environment, our modular cold rooms are cooled with either integral, remote or central refrigeration units.

Porkka walk-in cold rooms are designed and manufactured in Ylöjärvi, Finland, in a modern factory. As a Porkka client you will receive CAD drawings of your room issued from the factory. Compact Refrigeration Division manufactures and delivers the Walk-In rooms and all room panels to large passenger ships, as well as for smaller yachts too.

Technical Features and Options

Carefully planned materials and details

Porkka walk-in rooms are designed to the customer specification. The design is based on the required width & depth with regard to the outer dimensions of the module system (+/- 150mm). Doors and partition wall slots are freely selectable. Partitions do not increase the dimensions of the room.

Cold and freezer room insulation material depths are 80mm, 100mm and150 mm. Room exterior dimensions (length and width) will remain the same regardless of the insulation dimension. The insulation is rigid CFC / HCFC free polyurethane and the surface material is an alternative to polyester or PVDF coated galvanized steel plate or stainless steel plate. The panels are fastened together with cam locks. They are quick and easy to assemble


Porkka rooms are of hygienic design, the floor elements are anti-skid and seams tight. The freezers are equipped, if necessary, with integrated heating elements to prevent freezing or moisture damage under the floor. Freezer room door frames are equipped with a heating element to prevent moisture and ice formation. The lockable doors are provided with an internal emergency release. The panels and doors are CE marked.

Alarm Functions

Porkka temperature display is designed with built-in high / low temperature alarm, which will alert you audibly and visually and which can be connected to the building management system.


The doors are available to meet different needs depending on the application. Cold and freeze rooms hinged and sliding doors are energy efficient and light to use and equipped with high quality of hardware and gaskets.

The lockable doors are provided with an internal emergency release. Door inner and outer surfaces are hot-dipped galvanized 0.6 mm polyester coating or stainless steel. The insulation is rigid CFC / HCFC free polyurethane which is foamed in the door leaf. Thus, the structure is very strong but light.

Freezer Room doors are equipped with heating panels to prevent moisture and ice formation. A number of standard models enabling the use of different operating environments according to the needs. Robust design and easily replaceable spare parts make Porkka-door long-lasting solution for you when you want quality and durability.


Walk-In room floors are either basic or element set. Floor element surface material is WISA® Hexa Grip, birch plywood based, suitable for heavy-duty use. WISA® Hexa Grip is commonly used for transport, storage sheds and work floors, scaffolding, working surfaces and floor stands. Cold and freezer rooms can also be installed on top of level concrete floors. Freezer room floors require heating resistors which are supplied as standard. Floors have a maximum load of 40 kN / m² (4000 kp / m²) & 1 kN (100 kp) per ø 40mm castor. Reinforced floor panels are recommended for use when the floor is exposed to rolling loads (hard wheel pump wagon), or large point loads.

Freight Transport

In order to facilitate the use of trolleys and roll cages chiller rooms can be supplied without a floor. In this case, the room should be installed on an insulated surface and the door is provided with a strip seal. An insulated floor can be, for example, a concrete floor and the underlying insulation.

If the Walk-In room is having a doorsill, the room is delivered with heavy-duty ramps.

Shelving System

Walk – in modular shelving systems are practical, hygienic and easy to clean.

An optional four-tier machine washable (food safe) plastic shelves and support materials or powder-coated display shelves with rear sliding doors.

Marine Walk-in Rooms

Porkka Walk-In Cold / Freezer Rooms and doors are manufactured to be eco-friendly and specially designed to withstand extreme maritime conditions, complies with all the special requirements and U.S.P.H.S hygiene standards.

Marine panels and doors are always made of stainless steel AISI 304 or AISI 316 and surface quality is 2B (matte) or 4N (milled). The insulation is CFC / HCFC free polyurethane insulation and is available in 80, 100 or 150mm depending on the application, and room temperature in the ship.

Porkka Sales Offices in Europe

Porkka Finland

Ravitie 3,
Telephone+358 20 5555 12
Fax+358 20 5555 497

Porkka Sweden

Colia Scandinavia AB
Bråtagatan 8A
619 33 TROSA
Tel: +46 156-67 57 00

Porkka Norway

Colia AS
Ringeriksveien 16
3414 Lierstranda, Norge
Tel +47 66 98 77 77

Porkka U.K.

Unit 1, Mare Lane Business Park, Howe Lane, Binfield, RG42 5QA
Tel. +44 1923 233675
Fax+44 1923 805717

Central Europe, Asia, Middle East

Huurretie 13
Mob. +358 40 867 5700
Tel. +358 20 555 5309

East Europe, Russia, Baltics

Ravitie 3,
Tel. +358 20 5555 12
Fax+358 20 5555 497