Question 1

What is the difference between PPGL and PPGI PUF panels?

Accepted Answer

PPGL (Pre-Painted Galvalume) uses an aluminium-zinc alloy coating that provides 2-3× better corrosion resistance than PPGI (Pre-Painted Galvanized Iron). In the 85-95% humidity of mushroom rooms, PPGL is the only recommended choice. MushroomWale exclusively uses PPGL panels.

Question 2

What PUF panel thickness is recommended for mushroom rooms?

Accepted Answer

Our rooms use 80mm PUF panels on external walls (at ₹1,750/m²), 60mm on the common walls between rooms (at ₹1,535/m²) and 80/110mm roof panels (at ₹1,875/m²) — the same split the quotation prices.

Question 3

How long do PPGL PUF panels last?

Accepted Answer

PPGL PUF panels have an expected lifespan of 25-30 years with proper maintenance. The Galvalume coating resists humidity-driven corrosion far better than galvanized (PPGI) alternatives, making it the industry standard for controlled-environment agriculture as recommended by ICAR-DMR.

Question 4

What is the R-value of PUF panels?

Accepted Answer

60mm PUF panels have an R-value of approximately 15, while 80mm panels achieve an R-value of 20. This means excellent thermal insulation that significantly reduces HVAC energy consumption compared to brick, RCC, or sheet construction.

Question 5

Can PUF panels be reused or relocated?

Accepted Answer

Yes, PUF panel rooms are modular and can be disassembled and relocated. This is a major advantage over permanent construction — you can move or expand your mushroom farm as needed without losing your infrastructure investment.

Question 6

What is the PUF panel rate per square metre in 2026?

Accepted Answer

Current rates: 80mm PPGL PUF external-wall panels at ₹1,750/m², 60mm PPGL PUF common-wall panels at ₹1,535/m², and 80/110mm PPGL PUF roof panels at ₹1,875/m².

Question 7

Why is PUF insulation better than EPS or XPS for mushroom rooms?

Accepted Answer

PUF (Polyurethane Foam) has the highest R-value per inch of any common insulation material. Unlike EPS (thermocol) or XPS, PUF panels are structural, moisture-resistant, and provide an airtight seal — critical for maintaining 85-90% humidity without condensation damage.

Question 8

How are PUF panels installed for mushroom rooms?

Accepted Answer

PUF panels are erected on an RCC or steel foundation using cam-lock or tongue-and-groove joints. A single 18×40 ft room can be installed in 3-5 days by our trained crew. The joints are sealed with food-grade sealant to ensure airtight construction.

Question 9

Do PUF panel rooms need a separate foundation?

Accepted Answer

Yes, a level RCC floor slab (minimum 4-inch thick) with proper drainage slope is required. The slab and foundation are civil work in the client's scope, outside the panel price; MushroomWale gives the layout and levels for it.

Question 10

Can I use PUF panels for cold storage rooms too?

Accepted Answer

Yes, the same PPGL PUF panel system is used for both grow rooms and cold storage rooms. Cold rooms typically use 80mm panels for walls and roof to handle the lower storage temperatures (2-4°C). See our cold storage service page for details.

Question 11

What certifications do your PUF panels have?

Accepted Answer

Our PPGL PUF panels are manufactured with ISI-grade polyurethane foam (density 38-40 kg/m³) and PPGL steel skins conforming to IS 15477. All panels carry fire rating certification and are tested for thermal conductivity per IS 3346.

Question 12

How does PPGL coating protect against mushroom room humidity?

Accepted Answer

PPGL (Galvalume) coating combines aluminium (55%), zinc (43.4%), and silicon (1.6%) in a metallic alloy. The aluminium provides barrier corrosion resistance while zinc offers sacrificial protection — together they outperform pure zinc (PPGI) coating by 2-3× in high-humidity environments like mushroom grow rooms.

Panel Type	Thickness	Coating	R-Value	Rate (₹/m²)
External Wall Panel	80mm	PPGL	~20	₹1,750
Common Wall Panel	60mm	PPGL	~15	₹1,535
Roof Panel	80/110mm	PPGL	~20+	₹1,875

PUF Panel Mushroom Rooms Manufacturer in India

What Is a PUF Panel Mushroom Room?

PPGL vs PPGI — Why It Matters for Mushroom Farming

PPGL (Galvalume)

PPGI (Galvanized)

PPGL PUF Panel Rates

Why PUF Panels for Mushroom Farming

Thermal Insulation

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Fast Installation

Modular & Relocatable

Frequently Asked Questions

Why Choose MushroomWale

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