Frequently Asked Engineering, Product & Supply Questions (EK C01–C40)

Clear opening size is the usable internal passage width and height when the door leaf is fully open (e.g., 1200×2100 mm for pallet jacks). Wall cut-out size is the structural opening cut into the panel or masonry wall to receive the door frame, typically +70/+80 mm wider and +40/+50 mm higher depending on the frame profile.

For pedestrian or hand-trolley access up to 1100 mm clear width, a hinged cold room door (D01) is ideal. Whenever pallet jacks or forklifts operate, corridors are narrow, or clear width is 1200 mm and above, a sliding cold room door (D02) should be selected to eliminate leaf sag and save corridor swing space.

In sub-zero rooms below 0°C, moisture condenses and freezes around the perimeter gasket. An integrated frame and threshold heater cable prevents the EPDM gasket from freezing onto the aluminium frame, avoiding gasket tearing and door jamming.

All SerPan Cold hinged and sliding cold room doors feature a standard glow-in-the-dark internal safety release handle (anti-panic mechanism) that unlocks and opens the door from the inside with a single push, even if padlocked or key-locked from outside.

For any doorway used by pallet jacks, wheeled trolleys, or forklifts, a flush floor (thresholdless) configuration with a drop-seal bottom gasket is mandatory. Stepped stainless steel thresholds are only used for pedestrian-only rooms where floor panels sit above an existing slab.

In addition to clear door width and height, we require the monorail track height from finished floor level, track profile type (tubular or flat/I-beam), centerline offset relative to the door opening, and top slot clearance dimensions.

No. Flip-flap traffic doors are not hermetic thermal doors; they are designed for hygienic processing corridors, preparation zones, or as a secondary air-barrier behind a main insulated sliding door during peak traffic hours.

Standing outside the cold room facing the door: for hinged doors, if hinges are on the right it is Right-Hand (RH); if on the left, Left-Hand (LH). For sliding doors, if the leaf slides to the right to open it is Right-Sliding; if to the left, Left-Sliding.

Yes. Sandwich panel walls use a wrap-around telescopic counter-frame matching the exact panel thickness (80–200 mm). Masonry or reinforced concrete walls use a surface-mount or reveal-mount frame with thermal break and expansion anchors.

Standard RAL 9002 Polyester (PPGI) suits packaged goods and general cold stores. Meat, dairy, seafood processing, and high-humidity washdown areas should specify food-safe PVC-laminated steel or AISI 304 stainless steel.

PVC frames deliver natural low thermal conductivity and corrosion resistance for +2/+8°C and -18°C rooms, whereas anodized aluminum frames provide superior mechanical rigidity and impact resistance in high-traffic industrial doorways.

Opening a large forklift sliding door (e.g., 2000×2600 mm) for every pedestrian entry causes massive thermal loss. Integrating a hinged pedestrian wicket door directly into the sliding leaf allows staff access without opening the main door.

For hinged doors with wrap-around frames, add +70/+80 mm to clear width and +40 mm to clear height for the panel cutout. Overlap sliding doors mount over the opening or use a +80 mm width / +40 mm height reveal frame.

General engineering guideline: 60–80 mm for +8/+15°C cool storage, 80–100 mm for +2/+8°C chillers, 100 mm for 0/+4°C fresh storage, 120–150 mm for -18/-22°C freezers, 150–180 mm for -25/-30°C deep freeze, and 180–200 mm for -35/-40°C blast freezers.

Both provide high thermal insulation at 40–42 kg/m³ density, while PIR (Polyisocyanurate) features an enhanced isocyanurate ring structure that delivers superior fire resistance, reduced smoke emission, and compliance with industrial property insurance standards.

Cam-lock modular panels allow rapid assembly and future disassembly/relocation for walk-in cold rooms. Continuous-line labyrinth slip-joint panels are engineered for tall industrial cold storage buildings and long partition walls up to 13.5 meters.

Without proper floor insulation in sub-zero rooms, ground moisture freezes and expands (frost heave), cracking the concrete slab. Modular rooms use birch-plywood + stainless steel floor panels, while forklift-rated warehouses use multi-layer high-compressive XPS/PIR below a reinforced concrete slab with underfloor heating or ventilation.

Sharp 90-degree wall-to-floor and wall-to-wall angles trap bacteria and organic residues. HACCP, IFS, and BRCGS food safety audits require coved (rounded radius) PVC/aluminium hygienic profiles for effortless sanitation.

Rapid air contraction after door closure or defrost cycles creates strong vacuum pressure inside sealed rooms. Heated pressure relief valves are mandatory in all sub-zero freezers and blast rooms to prevent panel implosion and vacuum-locked doors.

No; it acts as a secondary auxiliary barrier. When the main insulated door is open during loading, low-temperature PVC strip curtains or laminar air curtains reduce warm, humid air infiltration by 45–65%, cutting evaporator icing and energy loss.

When room width exceeds the self-supporting span of the ceiling panel (~4.0–5.5 m depending on thickness), ceiling panels are suspended from overhead steel purlins using thermal-break aluminium T-bar suspension profiles and threaded rods (A05).

Yes. External roof panels feature 3-rib or 5-rib trapezoidal profiles to resist snow loads, wind uplift, and rainwater drainage, whereas internal cold room envelope panels use flat or micro-ribbed hygienic surfaces with vapor-tight labyrinth joints.

Forklift and pallet jack impacts are the #1 cause of cold store door damage. Heavy-duty floor bollards and stainless steel lower kickplates protect frame alignment and gasket seals, drastically reducing lifecycle maintenance costs.

Our 12-stage continuous line integrates steel pre-heating, high-pressure homogeneous PUR/PIR injection, curing inside a 30-meter heated double-belt press, and 6-axis servo flying-saw cutting—eliminating foam voids and ensuring uniform 40–42 kg/m³ density up to 13.50 m lengths.

Both sides of the structural steel core are protected by hot-dip zinc galvanization, chemical passivation, and anti-corrosive primer, topped with a 25-micron Polyester/PVDF/PVC topcoat, strippable protective PE film, and foam-bonding backcoat.

First, the 40×U×40 mm floor U-channel matching the panel thickness (80–200 mm) is anchored level to the floor to receive the wall panels. Next, clip-on antibacterial PVC rounded cove skirtings (HPSA1-HPSA4) snap over the 90° internal junction.

No. Room volume alone only provides a preliminary estimate. Actual cooling load depends on daily product intake tonnage, product entry temperature, specific heat, pull-down time, ambient climate, and door opening frequency.

Definitely not. A frozen storage room (-18°C) maintains products that are already frozen. A blast freezer (-35°C / -40°C) uses high-velocity airflow and high refrigeration capacity to rapidly pull down core product temperature to -18°C within hours.

For facilities with 1 to 4 rooms or where independent redundancy per room is desired, industrial split units (R01) are cost-effective. For large multi-room logistics hubs and food factories, central multi-compressor racks (R02) offer superior energy efficiency and capacity modulation.

While 4–6 mm fin spacing works for positive (+2/+8°C) chillers, sub-zero freezers (-18°C) require 7–8 mm and blast freezers require 10–12 mm wide fin spacing to prevent rapid frost bridging and airflow blockage.

Digital data-logging and mobile alarm panels protect high-value inventory against power outages, open doors, or defrost faults while providing mandatory historical temperature audit trails for food safety and GDP inspections.

Opening a -18°C or +2°C chamber directly to +35°C outdoor air causes severe moisture ingress, icy floors, and high power consumption. A temperature-controlled +8/+12°C ante-room acts as a thermal airlock.

Fresh produce requires 85–95% relative humidity. Undersized evaporators with high ΔT strip moisture from the air, causing product shrinkage and weight loss. Produce stores require generously sized low-ΔT unit coolers.

Yes. Cam-lock modular cold rooms (C04) can be disassembled without damaging the panels and re-assembled at a new site or expanded with additional panel modules.

Pharmaceutical cold rooms (+2°C/+8°C) incorporate redundant (N+1) cooling systems, uniform airflow design, multi-point calibrated sensors, backup power integration, and documentation supporting user GDP validation (IQ/OQ/PQ).

Yes. Under SerPan Cold's flexible commercial model, we supply standalone doors/panels, installed insulated room shells, or complete turnkey cold rooms with refrigeration.

In a "Box-in-Box" project, the outer building already exists and insulated rooms are built inside. In a standalone "Cold Storage Building", SerPan Cold + SerHangar engineer the structural steel frame, external roof/facade cladding, internal insulated envelope, and loading docks as a single integrated facility.

Primary steel columns and rafters are positioned outside the insulated thermal envelope wherever possible, with ceiling panels suspended via thermal-break hangers. Any internal columns are fully boxed with insulated panels and PU-injected joints.

A pre-engineered package comprising structural steel members, external roof/facade cladding, internal cold room wall/ceiling panels, all insulated and traffic doors, flashing/corner profiles, suspension hardware, and assembly drawings—ideal for export and remote sites.

Foundations and civil concrete works are typically executed by the client's local civil contractor according to SerPan Cold load and elevation drawings, while floor vapor barriers, insulation, structural steel, panels, doors, and refrigeration are clearly defined in our Scope Matrix (EK H05).

The truck dock interface is the most vulnerable link in the cold chain. Integrating insulated dock doors, inflatable/curtain dock shelters, and a conditioned staging corridor prevents ambient air infiltration during loading.

Two 100 m² facilities—one a +4°C single-door produce room and the other a -35°C blast freezer with monorail doors—have vastly different specifications and costs. Instead of misleading flat prices, we provide rapid, transparent item-by-item engineering quotes.

Simply share room or building dimensions (L × W × H), target temperature (+4°C, -18°C, etc.), stored product type, required door sizes, and desired scope (supply-only, installed shell, or turnkey) via WhatsApp or our quote form.

Panels are bundled with protective PE film and reinforced edge guards, while doors and hardware are packed in ISPM-15 export crates. Loading layouts are optimized for 20' DC, 40' HC containers, or 13.60 m mega trailers.

We offer EXW, FCA, FOB, CIF, CPT, and DAP delivery terms from Gebze / Istanbul, complete with Commercial Invoice, detailed Packing List, ATR / EUR.1 / Certificate of Origin, and technical declarations.

Yes. Alongside numbered shop and assembly drawings included with every export kit, we can dispatch experienced site supervisors to guide your local crew or deploy a full installation team.