How to Compare Aerogel Blanket with Traditional Insulation

2026-06-11

The Insulation Landscape Is Changing

For decades, engineers have specified the same family of insulation materials: mineral wool, fiberglass, calcium silicate, and cellular glass. These materials are familiar, widely available, and well understood.

But the demands of modern industry are changing.

Energy prices are volatile. Carbon reduction targets are tightening. Space on pipe racks and equipment skids is more valuable than ever. And corrosion under insulation (CUI) continues to drain maintenance budgets. offer a fundamentally different value proposition: superior thermal performance in a thinner, lighter, more durable format.

This title provides a systematic, side-by-side comparison to help you evaluate aerogel blankets against traditional insulation across the metrics that matter most:

· Thermal performance

· Thickness and space savings

· Moisture resistance and CUI prevention

· Installation labor and speed

· Fire safety

· Total cost of ownership (TCO)

· Application suitability

Part 1: The Contenders – Materials Overview

Aerogel Insulation Blanket

Description: A flexible composite material made by reinforcing silica aerogel (a nanoporous solid with >90% air) with fiberglass batting.

Key characteristics:

· Lowest thermal conductivity of any commercially available insulation (0.015–0.023 W/m·K)

· 99% hydrophobic (water-repellent) yet vapor-permeable

· Flexible, can be cut with a utility knife

· Service temperature: -200°C to 650°C (grade dependent)

· Non-combustible (Class A)

Traditional Insulation Materials

Material	Description	Key Characteristics
Mineral wool (rock wool, stone wool)	Fibrous insulation made from molten rock or slag	Moderate thermal conductivity (0.038–0.045 W/m·K), absorbs moisture, settles over time
Fiberglass	Glass fiber batt or board	Similar to mineral wool, lower temperature limit (~450°C), absorbs moisture
Calcium silicate	Rigid, high-temperature board made from lime and silica	Moderate thermal conductivity, rigid, wicks water, can contain leachable chlorides
Cellular glass	Rigid closed-cell glass foam	Low moisture absorption, rigid, brittle, high installation labor

Part 2: Head-to-Head Comparison

2.1 Thermal Performance (Conductivity & R-Value)

Material	Thermal Conductivity at 25°C (W/m·K)	Thermal Conductivity at 200°C (W/m·K)	R-Value per 25mm (1 inch) at 25°C
Aerogel blanket	0.015 – 0.020	0.022 – 0.028	R-10 to R-13
Mineral wool	0.035 – 0.042	0.055 – 0.065	R-4 to R-5
Fiberglass	0.036 – 0.045	0.065 – 0.075	R-4 to R-5
Calcium silicate	0.045 – 0.050	0.060 – 0.070	R-3 to R-4
Cellular glass	0.040 – 0.048	0.050 – 0.060	R-3.5 to R-4.5

Winner: Aerogel blanket – 2–5x better thermal performance per unit thickness.

2.2 Thickness Required for Equivalent Thermal Performance

To achieve the same heat loss reduction (e.g., on a 200°C steam pipe), the required thickness varies dramatically.

Material	Thickness Required	Relative Thickness
Aerogel blanket	35 – 50 mm	Baseline (1x)
Mineral wool	90 – 120 mm	2.0 – 2.5x thicker
Fiberglass	100 – 130 mm	2.5 – 3.0x thicker
Calcium silicate	80 – 110 mm	2.0 – 2.5x thicker
Cellular glass	80 – 100 mm	2.0 – 2.2x thicker

Winner: Aerogel blanket – 40–60% thinner for same thermal performance.

2.3 Moisture Resistance & CUI Prevention

Material	Hydrophobic?	Wicks Water?	Vapor-Permeable?	CUI Risk
Aerogel blanket	Yes (>99%)	No	Yes	Very Low
Mineral wool	No	Yes	Yes	High
Fiberglass	No	Yes	Yes	High
Calcium silicate	No (some treated)	Yes (if untreated)	Yes	High
Cellular glass	Yes (closed cell)	No	No	Low (if sealed)

Winner: Aerogel blanket – Unique combination of hydrophobicity + vapor permeability eliminates CUI risk.

2.4 Installation Labor & Speed

Material	Cutting	Handling Weight	Conforms to Elbows/Fittings	Relative Install Time
Aerogel blanket	Utility knife	Light	Yes (flexible)	Baseline (1x)
Mineral wool	Knife or saw	Moderate	Moderately (semi-rigid)	1.5 – 2.0x longer
Fiberglass	Knife	Light	Moderately	1.5 – 2.0x longer
Calcium silicate	Saw (dusty)	Heavy	No (requires custom cuts)	2.0 – 3.0x longer
Cellular glass	Saw (dusty, brittle)	Heavy	No (requires custom shapes)	2.5 – 3.5x longer

Winner: Aerogel blanket – 50–60% faster installation than mineral wool; 60–70% faster than calcium silicate or cellular glass.

2.5 Fire Safety

Material	Fire Rating	Non-Combustible?	Toxic Smoke?
Aerogel blanket	Class A (ASTM E84)	Yes	No
Mineral wool	Class A (generally)	Yes	Minimal
Fiberglass	Class A (generally)	Yes	Minimal
Calcium silicate	Class A	Yes	Minimal
Cellular glass	Class A	Yes	No

 

Winner: Tie – All materials are non-combustible when properly specified. However, aerogel blankets have lower flame spread (typically ≤5) than many mineral wools.

2.6 Service Temperature Range

Material	Minimum Temperature	Maximum Temperature	Cryogenic Performance
Aerogel blanket	-200°C	650°C	Excellent (flexible)
Mineral wool	-50°C (some grades)	650°C (some grades)	Poor (becomes brittle)
Fiberglass	-50°C	450°C	Poor
Calcium silicate	-50°C	650°C+	Poor (rigid, cracks)
Cellular glass	-200°C+	480°C	Good (but rigid)

Winner: Aerogel blanket – Only material that remains flexible at cryogenic temperatures while handling high heat.

2.7 Mechanical Properties & Durability

Property	Aerogel Blanket	Mineral Wool	Calcium Silicate	Cellular Glass
Settling / sagging over time	No	Yes	No (but cracks)	No
Compression recovery	>95%	Poor	None	None
Flexibility	High	Low-moderate	None	None
Vibration resistance	Excellent	Moderate	Poor (cracks)	Poor (cracks)
Impact resistance	Good	Moderate	Poor	Poor

Winner: Aerogel blanket – No settling, no sagging, flexible under vibration.

2.8 Leachable Chlorides (for Stainless Steel)

Material	Leachable Chlorides	Safe for 304/316 SS?
Aerogel blanket	<50 ppm	Yes
Mineral wool	20 – 200+ ppm (varies)	Not guaranteed
Fiberglass	<50 ppm (generally)	Usually yes
Calcium silicate	100 – 500+ ppm (varies widely)	Often no
Cellular glass	<50 ppm	Yes

Winner: Aerogel blanket – Consistently low chlorides; third-party tested.

Part 3: Economic Comparison – Total Cost of Ownership (TCO)

Upfront material price is only one factor. Total cost of ownership over 20 years tells the full story.

Example Scenario: 200 meters of 6" steam pipe, 180°C, outdoor, 8,000 operating hours/year, energy cost $0.10/kWh

Cost Component	Mineral Wool (100mm)	Cellular Glass (80mm)	Aerogel (40mm)
Material cost	$2,500	$5,000	$8,000
Installation labor	$6,000	$10,000	$3,500
Jacketing & sealing	$1,500	$2,000	$1,500
Total installed cost	$10,000	$17,000	$13,000
Annual heat loss (MWh)	140 MWh	120 MWh	60 MWh
Annual energy cost	$14,000	$12,000	$6,000
Annual energy savings vs. mineral wool	—	$2,000	$8,000
Expected service life (years)	10–12	20–25	20–25
Replacement cost (20 years)	$10,000 (once)	$0	$0
20-year TCO (installed + energy + replacement)	$10,000 + ($14,000×20) + $10,000 = $300,000	$17,000 + ($12,000×20) = $257,000	$13,000 + ($6,000×20) = $133,000

20-year savings with aerogel vs. mineral wool: $167,000

20-year savings with aerogel vs. cellular glass: $124,000

Payback period (aerogel vs. mineral wool): ~4.5 months

Part 4: Application-Specific Recommendations

Steam Pipes (150–350°C)

Best choice	Reason
Aerogel blanket	Thinner, faster install, eliminates CUI on cyclic steam lines
Mineral wool (acceptable alternative)	Lower upfront cost but higher long-term TCO
Calcium silicate	Avoid – wicks water, high chloride risk

LNG / Cryogenic Pipes (-162°C)

Best choice	Reason
Aerogel blanket (Cryo grade)	Remains flexible, minimizes BOG, faster install
Cellular glass (acceptable alternative)	Works but rigid, labor-intensive, higher installed cost
Mineral wool / fiberglass	Not suitable – becomes brittle

High-Temperature Process (>500°C)

Best choice	Reason
Aerogel blanket (HT Series)	Stable thermal performance, thin profile
Calcium silicate (acceptable alternative)	Works but heavy, rigid, CUI risk
Mineral wool (acceptable alternative)	Works but thick, settles over time

Building Envelope (Walls, Roofs, Floors)

Best choice	Reason
Aerogel blanket	Thin, high R-value, solves thermal bridging
Fiberglass batt (acceptable alternative)	Lower cost but requires more thickness
Mineral wool (acceptable alternative)	Good fire performance but thicker

Offshore / Marine (Humid, Salt Environment)

Best choice	Reason
Aerogel blanket	Hydrophobic, low chlorides, flexible, durable
Cellular glass	Acceptable but rigid, labor-intensive
Mineral wool	Avoid – absorbs moisture, accelerates CUI

Part 5: Decision Matrix – Which Material Is Right for You?

Priority	Choose Aerogel Blanket If...	Choose Traditional If...
Energy efficiency is #1	You want lowest heat loss	You accept higher energy cost
Space is limited	Pipe rack or skid is crowded	You have unlimited space
CUI is a known problem	You have past CUI failures	CUI is not a concern (rare)
Installation time matters	You need fast turnaround	Schedule is flexible
Upfront budget is tight	You cannot spend more now	You prioritize lowest first cost
Long-term TCO matters	You analyze lifecycle cost	You only look at purchase price
Stainless steel pipes	You need low chlorides	You accept chloride risk
Cryogenic service	You need flexibility at -162°C	You use rigid cellular glass
High vibration	Pumps, compressors, offshore	Static equipment only

Part 6: Frequently Asked Questions

Q: Is aerogel blanket always more expensive than traditional insulation?

A: Upfront material cost is higher. However, total installed cost (material + labor + jacketing) is often comparable because aerogel is thinner and installs faster. Over the lifecycle (including energy savings and avoided maintenance), aerogel has the lowest total cost of ownership.

Q: Can aerogel blanket replace mineral wool on existing pipe supports?

A: Yes. For load-bearing applications (pipe supports, hangers, shoes), specify high-density aerogel blanket or standard aerogel with a protective wear plate. Consult our engineering team for support-specific designs.

Q: Does aerogel blanket work in wet or humid environments?

A: Yes – it is >99% hydrophobic. Unlike mineral wool or calcium silicate, aerogel does not absorb water. For outdoor applications, add weather jacketing (aluminum or stainless steel) for mechanical and UV protection.

Q: How do I verify that an aerogel blanket is suitable for my application?

A: Request third-party test reports for:

· Thermal conductivity (ASTM C177 or C518) at your operating temperature

· Hydrophobicity (ASTM C1519)

· Leachable chlorides (ASTM C871) – for stainless steel

· Fire rating (ASTM E84 or EN 13501-1)

· Compressive strength (ASTM C165) – for supports

Q: Can I mix aerogel and traditional insulation in the same system?

A: Yes, during phased upgrades. For example, replace insulation on high-risk CUI sections first, leaving mineral wool on less critical areas. However, for best performance and simplified maintenance, full system conversion is recommended.

The Data-Driven Choice

Traditional insulation materials have served industry well for decades. They are familiar, available, and adequate for many applications.

But adequate is no longer enough.

· Rising energy costs demand lower heat loss.

· Space constraints require thinner insulation.

· CUI failures demand moisture-resistant solutions.

· Turnaround schedules require faster installation.

· Sustainability targets demand lower carbon footprints.

Aerogel insulation blankets deliver on all fronts:

· 2–5x better thermal performance per unit thickness

· 40–60% thinner for same R-value

· >99% hydrophobic – eliminates CUI

· 50–60% faster installation – lower labor cost

· -200°C to 650°C range – one material for hot and cold

· Lowest 20-year total cost of ownership

For new projects, the choice is clear: specify aerogel from the start.

For retrofits, the payback is compelling: upgrade now and start saving within months.

Ready to Compare Aerogel for Your Application?

Our technical team can help you:

· Run a side-by-side comparison for your specific pipe sizes and temperatures

· Calculate thickness equivalence and heat loss reduction

· Provide total installed cost estimate (material + labor + jacketing)

· Deliver 20-year TCO analysis

· Supply sample rolls for testing

Email: anna@cntradematt.com

WhatsApp: +86 15890635623

Request your free comparison analysis today – including a customized savings projection.