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Head-to-head

Insulation comparisons — computed, not opined

Every page below carries the same level playing field: λ at duty temperature, the thickness each material needs for EQUAL heat loss, and what the difference is worth in € and CO2. Then an honest verdict.

Stone wool vs Glass wool
Computed head-to-head: λ, thickness for equal loss, money.
Ceramic fibre vs Stone wool
Computed head-to-head: λ, thickness for equal loss, money.
Calcium silicate vs Stone wool
Computed head-to-head: λ, thickness for equal loss, money.
Aerogel blanket vs Calcium silicate
Computed head-to-head: λ, thickness for equal loss, money.
Cellular glass vs PIR / PUR rigid foam
Computed head-to-head: λ, thickness for equal loss, money.
Microporous vs Ceramic fibre
Computed head-to-head: λ, thickness for equal loss, money.
Silica needle mat / fabric vs Ceramic fibre
Computed head-to-head: λ, thickness for equal loss, money.
E-glass needle mat vs Stone wool
Computed head-to-head: λ, thickness for equal loss, money.
Aerogel blanket vs Microporous
Computed head-to-head: λ, thickness for equal loss, money.
Calcium silicate vs Expanded perlite
Computed head-to-head: λ, thickness for equal loss, money.
Elastomeric foam vs PIR / PUR rigid foam
Computed head-to-head: λ, thickness for equal loss, money.
Cellular glass vs Stone wool
Computed head-to-head: λ, thickness for equal loss, money.
E-glass needle mat vs Silica needle mat / fabric
Computed head-to-head: λ, thickness for equal loss, money.
Removable covers vs fixed lagging
The lifecycle comparison nobody computes — until the first maintenance cycle.
Aluminium vs stainless jacketing
Price, fire case, corrosion, emissivity.
Insulation bags vs engineered covers
Why the cheap pillow costs more by year two.
FAQ

Questions on this topic

How should insulation materials be compared?
On four axes, in order: service-temperature fit, λ at MEAN temperature (not the ambient brochure number), system fit (does it survive the maintenance regime?), and installed lifecycle cost. Each comparison below computes the first two and argues the rest honestly.
Is a lower lambda always better?
No — λ buys thickness reduction, nothing else. If space is free, a thicker cheap material usually wins on cost; premium-λ materials (aerogel, microporous) pay off where thickness, weight or CUI risk is constrained.