Mortar Specialties

Cement Based Mortar

Monneli Neofil BL

Block and Brick Laying Mortar

NEOFIL BL can be mixed by hand or with any type of electrical mixer and is normally used to fill gaps between concrete and bricks.
NEOFIL BL is particularly adapted for mounting regular/hollow blocks, stones and bricks.
back to Mortar Specialties
Technical Information
Product Description

NEOFIL BL is made of cement, graded sand and additives – a ready mix mortar that when blended together creates an improved workability, better-quality bonding and excellent water retention.

NEOFIL BL reduces shrinkage and movement in masonry walls due to a controlled elasticity modulus.

  • Single component and requires only on site water addition
  • Excellent workability and ready to use
  • High strength and bonding properties
Compiliance Standard
  • ASTM 387, C-144, C404
  • BS 5262
Packaging, Coverage / Consumption

NEOFIL BL is supplied in 50 kg bags.

Shelf Life & Storage

Keep NEOFIL BL in sheltered, off the ground, dry environment and well closed – original bags. Shelf life is 12 months from production date if stored as recommended.

Technical Properties




Density at 25°C

1.7 kg/L


< 0.01g/L

Pot Life at 25°C

60 minutes

Compressive Strength at 28days (BS EN 196)

15.0 N / mm2

Flexural Strength at 28days (BS EN 196)

4.0 N / mm2

Adhesion Strength at 28days (EN 1015-12:2000)

1.0 N / mm2

Application Thickness

Up to 12 mm

Application Temperature

+5°C and +42°C

Noxiousity according to EEC 88/379


Application Information
Instructions for use


To prepare the mixture, pour in a container 6 - 7.5 liters of clean water. Add a bag of 50 Kg of NEOFIL BL, then mix to get a homogeneous lump free consistency mixture using an electric agitator / slow speed mechanical mixer.

Once mixed, let the product rests for about 5 minutes and remix shortly before use.


Apply NEOFIL BL a trowel and then position the blocks verifying their alignment. Remove possible excess of mortar with a wet sponge before it hardens.


Protect the newly applied material from direct exposure to sunshine and wind and allow to be cured for at least 3 days by spraying with water 3 to 4 times daily.


Tools and equipment should be cleaned with water immediately after use.
Hardened materials should be mechanically removed.


  • If the blocks are laid directly on a floor with possible humidity rising, it is recommended to apply a proper damp course system first
  • The 2 cm separation between the top of the block wall and the bottom of slab or beam should be filled with suitable compressible material
  • Spray the block wall with water before applying the plaster
  • Ensure that the first layer of blocks is fixed proper with perfect alignment
  • Do not apply NEOFIL BL in rainy weather, high winds and sand storms
  • Do not apply on surface that has temperature less than +5ºC
  • During summer season, working area should be covered to prevent the direct sun effects. Keep equipment cool and use a cool water
  • The product should not be exposed to moving water during application
Surface Preparation

The blockwork where NEOFIL BL will be applied must be perfectly clean, solid, compact and free from grease substances or solid particles. It must not be over-heated nor frozen.

During hot weather, the surface to receive NEOFIL BL should be brushed with water prior to the application. Take extra note to neutralize the suction in the background of the blockwork by applying clean potable water. Allow excess water to be fully drained before to applying NEOFIL BL.

Additional Information
Health & Safety

NEOFIL BL is a cement-based product. Avoid contact with skin or eyes. Provide adequate ventilation in working place to avoid inhalation of dust.

During application, wear appropriate protective clothing, goggles, gloves and respiratory equipment if necessary.

In case of contact with skin, rinse with water and again wash thoroughly with soap and water. In case of contact with eyes, rinse with plenty of water and seek medical advice accordingly.

If ingested, obtain medical attention immediately. Do not induce vomiting.

Important note

The information in this Technical Data Sheet is based on Colmef Monneli’s experience. Colmef Monneli does not accept any liability arising from the use of its products as it has no direct or continuous control over where or how its products are applied. All Colmef Monneli’s Data Sheets are updates on regular basis. It is the user’s responsibility to obtain the latest version.

additional materials
Fast Download
Technical Properties Sheet
download (*.pdf 0.06Mb)
More Products from this section
Monneli Dashbond

Spatter Dash Bond Coating

Monneli Dashbond SP

High Quality Spatter Dash Bond Coating

Monneli Dashbond SPX

Superior Quality Spatter Dash Bond Coating

Monneli Dashbond STR

Superior Quality Spatter Dash Bond Coating

view more
Monneli Espansil


It is used to obtain non-shrinking and expansive mortars and concrete, where for the static reasons, the increase of volume is required. The principal fields of application are:
Reinforced plasters for the structural consolidation of brick
Reinforced concrete constructions
Grouting of channels and rocky embankment reinforced concrete ceilings, consolidation of vaults, etc.
Contact us
Choose a location
P.O. Box: 123808, Dubai
Toll: +971 4 8803488
Fax: +971 4 8803450
Site Map