Insulated Sandwich Panels engineered by Rinac
PUF, PIR, FM-approved and rockwool sandwich panels for cold rooms, cleanrooms, roofing and modular construction. Manufactured in-house at two plants and installed across India for more than three decades.
A sandwich panel is an insulating core bonded between two metal facings, giving you a wall, roof or ceiling that goes up fast and holds temperature with very little energy. Rinac makes these panels in-house, so the same team that engineers your cold room or factory also controls the panel quality, thickness and fire rating that go into it.
The core you pick sets the performance. Rigid polyurethane (PUF/RPUF) is the everyday choice for cold rooms and roofing. PIR raises the fire class for pharma and food plants. FM-approved PIR meets insurer-led standards. Rockwool moves you to a non-combustible A1 core for data centres and high fire-safety sites. The range below covers all four across 30–200 mm thicknesses.
Six panel systems, one manufacturer
Each system links to its full product page with complete specifications, models and finishes.
InstaRoof
Interlocking insulated roof panels in 30 mm and 50 mm, 1085 mm cover width, pre-painted Galvalume AZ150 facing for corrosion resistance. Purlin support at 2440 mm spacing.
View InstaRoof Roofing · Custom thickness
CoolTop
Custom-thickness roofing from 50 mm to 200 mm, single panels up to 14,500 mm, overlapping joints. Restricts heat transmission by around 8°C with PPGI, PPGL or stainless facings.
View CoolTop Wall & ceiling · All cores
InstaBuild
Wall and ceiling sandwich panels in RPUF, PIR, FM PIR or rockwool cores, 30–200 mm thick, 1000 mm width, continuous slip-lock and tongue-and-groove joints for an airtight seal.
View InstaBuild Ceiling · PUF / PIR
InstaCeil
30 mm insulated ceiling panels for cold rooms, cleanrooms, warehouses and commercial interiors. Self-mating tongue-and-groove joints keep installation fast and the ceiling line clean.
View InstaCeil Wall & partition · PUF / PIR
InstaWall
50 mm wall and partition panels, 1000 mm construction width, lengths from 12 to 20 feet. Fire-resistant PIR options and cam-lock tongue-and-groove joinery for structural, hygienic walls.
View InstaWall Stonewool · A1 non-combustible
R-Wool
Non-combustible stone wool panels with A1 fire classification and 120-minute fire integrity (BS 476 Part 20 & 22). 50–200 mm thick for data centres, battery plants and high fire-safety sites.
View R-WoolPUF vs PIR vs FM PIR vs Rockwool
Published specifications for Rinac InstaBuild panel cores. Use this to match the core to your fire, thermal and structural needs.
| Property | PUF (RPUF) | PIR | FM PIR | Rockwool |
|---|---|---|---|---|
| Core density (kg/m³) | 40 ± 2 | 40 ± 2 | 42 ± 2 | 95–100 |
| Thermal conductivity / K-value (W/mK) | ≤ 0.023 | ≤ 0.020 | ≤ 0.019 | ≤ 0.04 |
| Fire performance | B3 | B2 | B1 | A1 (non-combustible) |
| Compressive strength (kPa) | 150–250 | 150–250 | 150–250 | 17–80 |
| Fire standard | BS 476 Part 5 (self-extinguishing) | BS 476 Part 5 | BS1D0, EN 13501-1 (FM approved) | BS 476 Part 20 & 22 |
| Typically specified for | Cold rooms, roofing, general modular | Fire-sensitive cold rooms, food | Pharma, food, insurer-led specs | Data centres, high fire safety |
Standard panel width 1000 mm. Thickness options 30, 40, 50, 60, 75, 80, 100, 120, 150 and 200 mm (custom available). Specifications sourced from Rinac product pages. Confirm exact values for your project with the Rinac engineering team.
Applications across industries
The same panel systems support cold chain, clean construction and industrial builds.
Cold Chain & Cold Rooms
Walls, ceilings and roofing for modular cold rooms, freezers and chillers holding low temperatures with minimal energy loss.
Cleanrooms
Smooth, dust-proof PIR and FM PIR panels with sealed joints for pharma clean zones, ante rooms and controlled environments.
Food Processing
Hygienic, easy-to-clean panel envelopes for processing halls, packing areas and chilled storage in food and dairy plants.
Industrial & Warehousing
Insulated roof and wall systems for factories, warehouses and prefabricated buildings that need fast, weather-tight enclosure.
Commercial Interiors
Ceiling and partition panels for retail, institutional and commercial spaces where thermal comfort and clean lines matter.
Data Centres
Non-combustible A1 rockwool panels with 120-minute fire integrity for data halls, battery rooms and mission-critical facilities.
Common questions about Rinac panels
Planning a cold room, cleanroom or factory?
Tell us the temperature, fire class and area you are working with. Rinac engineers will recommend the right core, thickness and finish and share a quote.
