XLite concrete is produced with EPS (Expanded Poly Styrene) beads which have very good thermal insulation properties. Brickbat coba treatment can be replaced with XLite for a high thermal insulation.

BBC Replacement

Brickbat Coba Replacement:

Brickbat Coba is particularly used as a waterproofing method to provide thermal insulation in roofs consisting of brickbats mixed with mortar consisting of chemical admixtures. But this method only provides a slope to drain water away and to stop its accumulation. The claim of providing water insulation is not measurable due to which this method is not recommended as this needs a lot of maintenance. It can be replaced by a light-weight concrete which is more durable, needs lesser maintenance and is easier to apply on the roof. Using light-weight concrete will also reduce the dead load on roofs caused due to the brickbat coba.

Brickbat Coba Vs X-Lite – Click Here

Thermal Insulation Block:

Thermal Insulation Block is an insulating and load-bearing building block that controls the exterior temperature of your structure, provides sound insulation and also reduces the thermal bridge at the wall-floor junction. But there are some major disadvantages associated with the Thermal Insulation Block such as:

  • Cracking in walls
  • Need for highly skilled labours
  • Requires nailing and drilling
  • Limited strength

Thermal Insulation Floor & Slab:

These are the floors and slabs built to protect the structure from external heat so that no thermal bridging occurs at the edges. This is done by installing thermal insulating material like Polystyrene, concrete with some admixtures and other fibres in slabs and floors.

EPS Block:

These are the light-weight and low-density blocks of various sizes used to provide a lightweight void fill below a highway, bridge, embankment or parking lot giving an added solution to heat (thermal insulation) and drainage. It reduces digging and lateral pressure, but these blocks are vulnerable to fire hazard, petroleum solvents and insect damage, if not maintained properly.

EPS Panel:

This is a low-density and light-weight thin structure provided with a polystyrene insulation core where the panel is placed providing it a rigid structure. This panel provides some resistance to moisture, fire and decay but it has lower strength compared to concrete material.

Dos and Don’ts of XLite Application:


XLite can be used within 3 hours after being dispatched from the plant The Q/C plant needs to be informed if the required time is more than 3 hrs.


Curing has to be done by sprinkling water only, avoid using any other curing method.


XLite should not be kept exposed to UV rays. It is mandatory to cover XLite with mortar (regular) or tiles/granite/marble when used as screed within 1 week time of placing.



1. What is XLite?
Ans: XLite is a non-structural and low density concrete. It enhances thermal insulation and effectively replaces brickbat coba and concrete screed thereby reducing the dead load on existing structures.

2. How XLite is different from Foam Concrete?
Ans: XLite is made in controlled parameters at Ready-mix plants with required density whereas foam concrete is produced at site with the help of foaming agents which generally lack accuracy in providing low density. Homogeneous density is not available for foam concrete.

3. What density range we can choose from in XLite?
Ans: XLite is available in as low density as 800-1800 kg/cu. m.  It can also be customised upto 600 kg/cu. m.

4. Is XLite a Structural Concrete?
Ans: No

5. What is the difference between XLite Standard and XLite Structural?
Ans: XLite Standard is a non-structural low-density concrete having compressive strength up to 4Mpa. But in case of XLite Structural, you can get compressive strength up to 25Mpa. XLite Structural can also be designed for MoE requirement. Density of XLite Structural ranges from 1000 to 1800 kg/m³ for compressive strength of 7.5 Mpa to 25 Mpa.

6. How is XLite a better terrace overlay solution than Brick bat coba?
Ans: XLite has better thermal and sound insulation properties than Brick bat coba and requires one day as it is easy to place, finish, maintain and repair whereas Brick bat coba requires skilled labourers and 6-7 days to place and finish.

7. How much dead load can XLite reduce in a building?
Ans: Using XLite of upto 1000kg/cu. M density can reduce almost 50% dead load of the terrace floor as you can choose the load you want to put on slab. In case of Brick bat coba it has density of 2000-2300 kg/cu.m.

8. What are the advantages of XLite Standard and XLite Structural?
Ans: Low density in XLite Standard and XLite Structural helps in reduction of dead load which facilitates to optimise design cost, better thermal and sound insulation properties.

9. Can we use XLite Structural in RCC slab casting?
Ans: XLite Structural can be used for deck slab casting with reinforcement and for pre-casting of structures where low density is required.

10. How many days does it take for XLite application?
Ans: Depending upon the area XLite application can be done in one single day even for larger slabs of approximately 15000 sq. ft.

11. What material is used to produce XLite?
Ans: To produce XLite Standard, EPS beads are used in place of aggregates and for XLite Structural LECA are used instead of regular aggregates.

12. How much fire rating does XLite Structural have?
Ans: XLite Structural has 20% more fire rating than usual normal concrete.

13. What precautions are to be taken while using XLite?
Ans: XLite Standard cannot be left exposed to direct sunlight. It is mandatory to cover XLite Standard with 25-50 mm finished layer of tiles/granite/marble.

14. How much curing time does XLite require?
Ans: Minimum 7 days curing is important.

15. What curing methods are used for XLite?
Ans: For curing of XLite, sprinkling of water and applying of curing compound can be used as the best methods. Please don’t use pounding method for curing XLite.

16. What are the application areas for XLite Structural?
Ans: XLite Structural can be used for replacing Brick bat coba, screed concrete for flooring and deck slab with reinforcement where low density concrete is required.

17. Does Nuvoco provide complete roof overlay solutions?
Ans: Yes, Nuvoco provides complete roof overlay solutions like standard concrete for R.C.C Slab with water proofing solutions and XLite for top floor screed.

18. What is minimum density we can get in XLite?
Ans: XLite Standard is available at minimum 600 kg/cu. m and XLite Structural can be produced at minimum 1000 kg/cu. m

19. What is maximum grade of concrete that we can get in XLite Structural?
Ans: XLite Structural is available upto M-25 Grade with density ranging from 1000-1800 kg/cu. m.

20. Does XLite come with Green Building material certification?
Ans: Yes, by using XLite you can get LEED points for green building norms.

Nuvoco Vistas Corp. Ltd.

Nuvoco Vistas Corp. Ltd, a Nirma Group company, started operations in India in 1999 via acquisitions. Nirma Group forayed into the cement business in 2014 through a greenfield cement plant in Nimbol. Thereafter, we have grown the cement business, through acquisition of the Indian cement business of LafargeHolcim in 2016 and NU Vista (formerly Emami Cement Limited) in 2020. Read More



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