Because of perlite's outstanding insulation, light weight, fire retardant and sound control characteristics and its being rot, vermin and termite resistant perlite is widely used in the following construction applications.


Loose fill insulation

Because of Perlite's outstanding insulating characteristics and light weight, it is widely used as a loose-fill insulation. In this application, free flowing perlite loose-fill masonry insulation is poured into the cavities of concrete block where it completely fills all cores, crevices, mortar areas and ear holes
What is the benefits of perlite loose fill insulation?

  • It is non combustible with a fusion point of approximately 1260oC. (2300oF).
  • It is inorganic and is rot, vermin and termite resistant.
  • It improves the fire rating.
  • It is non settling and supports its own weight in masonry wall cavities and masonry block cores.
  • It may be easily installed without special training or equipment.

Portland cement and gypsum plasters

Perlite can also be used as an aggregate in Portland cement and gypsum plasters for exterior applications and for the fire protection of beams and columns.
Traditionally plaster had been made from a mix of gypsum plaster and sand. The problem with sand plaster is that in a fire the sand explodes and cracks, and can be easily destroyed.
In contrast, perlite plaster can offer a product which is both lightweight and fire-proof


  • lightweight: it weighs approximately 60% less than ordinary sand plaster.
  • Thermal Insulation: 4 times more resistant to heat transmission than sanded plaster thus permitting savings in air conditioning .
  • Fire rating: Non- combustible and non- toxic provides up to 5 hours fire protection with minimum weight and thickness.
  • Noise Reduction - Because of its porous structure it doesn't permit sound reflection, it is sound absorbent and reduces sound transmission between partitions.

Mixing of plaster Perlite:
For every two bags (100ltr per bag) of Perlite-C one sack of cement (50kg) and 20-40lts lime plus water

Underfloor insulation:

Why Perlite Insulation?
Perlite underfloor insulation is an inorganic product that doesn't rot, doesn't support combustion nor provide a habitat for rodents. Because of its neutral PH, the product doesn't foster corrosion in piping and electrical wiring that may be in the underfloor area and it is greatly reduce sound transmission form floor to floor, form floors to walls and from underfloor piping system.
When used for underfloor insulation, a water repellent, dust suppressed perlite specially produced for this application is used.
It can be used:
under floating concrete floors,
asphalt floors
floating board floors.

Concrete roof-decks:

Perlite concrete aggregate combined with portland cement and water produces a lightweight insulating concrete used for lightweight roof decks, floor fills, lightweight structural decks and many other applications

Benefits of concrete roofdeck insulating

  • not combustible.
  • superior fire ratings .
  • lightweight and durable .
  • reduce sound transmission .
  • Excellent insulating value
  • Slope to Drain




Perlite m3

Portland Cement kg Water kg Compressive strength(after28days)Kg/cm3 Thermal conductivityw/m.C Dry densityKg/m3
1 200 200 8 - 10 0.09 340
1 250 230 12 - 15 0.10 380
1 300 250 17 - 20 0.11 440
1 350 275 22 - 25 0.12 500
1 450 300 25 - 30 0.13 540


Chimney Lining

Condensate, which can form in chimneys when hot gases impinge on cold chimney linings, can create two serious problems. The first is he formation of combustible tars on chimney linings that may cause chimney fires. The second is the formation of sulphite solutions that can attack chimney morter which can lead to leakage, staining and possibly even chimney collapse.
Other reasons for relining chimneys are to deal broken or cracked masonry work and to improve draft by reducing flue size.
Why Perlite?

  • Perlite is inorganic.
  • Doesn't support combustion.
  • Exhibits excellent thermal insulting properties over wide range of temperature.
  • Doesn't affected by most acids.


Perlite blocks consist of Portland cement and expanded Perlite and it is same in shape and dimension as ordinary blocks.
Advantages of Perltie Blocks:

  • Weighing much less than the half of traditional concrete blocks.
  • Perlite concrete blocks provide excellent noise absorption.
  • perlite concrete is non-toxic, rot, vermin and termite resistant and non-combustible.
  • It is as permanent as the structure, which contains it.
  • transportation, handling and installation is easier and faster.


Thickness of the Plaster Perlite for Covering (mm)


1/2hr 1hr 1.5hr 2hr 3hr 4hr
150 10 12 23 33 54 75
170 10 13 24 35 57 79
190 10 13 25 37 60 83
210 10 14 26 38 63 86


Pipe insulation

Lightweight perlite insulating concrete can play a multiple role in undergroundpipe and duct installations . Perlite concrete insulation can also serve as a supporting envelope . This latter advantage is of special importance when pipe or ducts are laid under roadways , parking lots or other areas subject to traffic. Perlite concrete pipe insulation provides a monolithic
( seamless ) insulation for the length of a pipe or duct. Additionally , Perlite insulating concrete is permanent, fire proof , rot proof and vermin proof .

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