PUF Hidden Tongue & Groove
Designed for precision-built enclosures, Hidden Tongue & Groove PUF Panel integrates a concealed interlocking system with high-performance polyurethane insulation to minimize air leakage and thermal bridging across panel joints.
Colour Shades
Hidden Tongue & Groove are supplied with a standard colour-coated finish selected to meet functional zoning, architectural coordination, and environmental exposure requirements. The pre-coated metal facings are factory-finished to ensure uniform colour consistency, corrosion resistance, and long-term surface stability under industrial and coastal operating conditions.
Select Color:
Product Specifications
| Parameters | Specifications |
|---|---|
| Full Form | Polyisocyanurate |
| Thermal Conductivity (k-value) | 0.018–0.021 W/m·K |
| Insulation Performance | Excellent |
| Fire Resistance | B1 (Better Fire Retardant) |
| Smoke Generation | Lower |
| Density | 40–45 kg/m³ |
| Panel Thickness | 30–200 mm |
| Panel Width | 1000 mm |
| Panel Length | Up to 12–15 m |
| Top Sheet | PPGI / GI / Aluminium / SS |
| Bottom Sheet | PPGI / GI / Aluminium / Foil |
| Sheet Thickness | 0.35–0.60 mm |
| Wall Profile | Plain / Ribbed |
| Weight (50 mm) | 11–13 kg/m² |
| Service Temperature | -40°C to +120°C |
| Cost | Higher (10–20% more) |
| Typical Applications | Pharma, FMCG |
Profile drawing
Concealed fastening
Wide Seam Connection
seamless connection
Key Performance Attributes
Outlining Essential performance parameters influencing insulation, strength, and installation efficiency.
Airtight Jointing
Concealed tongue and groove joints restrict air infiltration and improve enclosure tightness.
High Insulation Efficiency
Rigid PUF core with low thermal conductivity supports stable internal temperatures.
Hygienic Finish
Flush panel joints reduce dust accumulation and support clean environments.
Moisture Resistance
Closed-cell polyurethane limits moisture absorption in humid conditions.
Available Panel Joints
Mount’s panel joint configurations ensure precise alignment, secure interlocking, and effective load transfer, enhancing structural continuity, air and moisture tightness, and installation efficiency while maintaining long-term durability .
Roof Joint
Single Tongue & Groove Joint
Double Tongue & Groove Joint
Hidden Tongue & Groove
Camlock Joint
M Section
Advantages of the Hidden Tongue & Groove
Concealed Joint Architecture
The hidden interlocking joint system minimizes exposed fastening points, supporting a cleaner internal finish and improved enclosure continuity.
Improved Air Leakage Control
Precision interlocking geometry reduces unintended air infiltration at panel junctions when correctly installed and sealed.
Enhanced Aesthetic Consistency
Flush internal panel alignment creates uniform wall surfaces suitable for controlled industrial and semi-hygienic environments.
Reduced Thermal Disruption at Joints
Concealed tongue-and-groove connections support insulation continuity across panel interfaces.
Simplified Internal Maintenance
Smooth internal surfaces with minimal visible overlaps allow easier routine cleaning and inspection.
Available Accessories
Mount Roofing & Structures provides engineered panel accessories designed to support installation accuracy, system compatibility, and enclosure performance across insulated panel applications.
These accessories are developed to integrate seamlessly with Mount panel systems, ensuring coordinated detailing, structural alignment, and long-term operational reliability across industrial, commercial, cleanroom, and cold storage projects.
Bottom C Flashing
L Flashing (Inner and Outer)
Walkable Ceiling Panels
Non-Walkable Ceiling Panels
Inner and Outer Covings
View Panels
Applications
Industrial Manufacturing Units
Concealed joints provide improved enclosure tightness and internal finish.
Warehouses & Logistics Centres
Enhanced joint sealing reduces air infiltration at panel interfaces.
Automobile & Engineering Workshops
Flush joints improve internal aesthetics and maintenance ease.
Textile & Garment Manufacturing
Supports cleaner internal finishes where dust control is important.
Institutional & Educational Buildings
Provides a refined internal surface without visible fasteners.
PEB Structures
Maintains uniform enclosure detailing across steel-framed buildings.
Solar-Integrated Industrial Roofs
Works with matching insulated roof systems for continuous envelope performance.
Power Plants
Improves enclosure continuity in controlled service spaces.
Oil & Gas Facilities
Suitable for insulated enclosures requiring improved joint detailing.
Pharmaceutical Production Areas
Concealed joints reduce dust accumulation and support cleaning protocols.
Commercial Sheds & Retail Warehousing
Provides aesthetically clean internal finishes.
Food Processing & Packaging Zones
The flush joint system supports hygiene-sensitive environments.
Why Choose Mount?
Mount Roofing & Structures manufactures hidden joint insulated panels within a controlled, automated production environment supported by in-house engineering coordination. This enables dimensional precision and consistent panel engagement across projects requiring tighter enclosure detailing.
Key capabilities include:
- 30+ Years of Combined Industry Experience
Technical expertise across insulated panels and steel building systems. - Automated PUF Panel Production Lines
Ensures uniform core bonding, dimensional accuracy, and repeatable quality. - 8.5 Million m² Annual Production Capacity
Supports large-scale industrial and infrastructure roofing projects. - 460+ Skilled Workforce
Structured manufacturing, quality monitoring, and execution oversight. - Exports to 89 Countries
Experience supporting cold storage, industrial, and infrastructure developments globally.
Frequently asked Question
It is an insulated sandwich panel with a concealed interlocking joint that creates airtight panel connections while maintaining a clean, flush surface.
The concealed joint reduces air leakage and thermal bridging at panel interfaces, improving overall enclosure efficiency.
The panel uses a rigid polyurethane (PUF) foam core known for low thermal conductivity and stable insulation performance.
Yes, the airtight joint design and high insulation efficiency make it suitable for cold storage and controlled environments.
Yes, Hidden Tongue & Groove PUF Panels are designed for use in wall and ceiling applications.
By minimizing air infiltration and thermal loss at joints, the panel supports efficient heating and cooling operation.
The closed-cell PU foam core limits moisture absorption, supporting performance in humid and controlled conditions.
No, the self-aligning joint geometry enables accurate and efficient installation with consistent panel engagement.
Yes, the flush joint finish reduces dust traps and supports easy cleaning in food, pharma, and clean manufacturing areas.
Hidden Tongue & Groove panels are installed by mechanically fastening through the concealed tongue section of the joint profile into the supporting structure. Once the adjacent panel is engaged into the groove, the fasteners become hidden within the interlocking system, maintaining a flush visible surface while ensuring structural attachment.
