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Perma Jointing Mortar



Perma Jointing Mortar is a cementitious powder which needs just addition of required amount of water to form a thicksotropic paste which is slump free and ideal for use as a pointing material in the stone masonry structures of dams and historic buildings.


Perma Jointing Mortar is primarily used as pointing mortar in heavy masonry structures of dams, hydraulic structures and historic buildings. It is also successfully used in repair of structural members in buildings where high strength and non slump mortar is required especially when these repairs are to be carried out against gravity.


  • Perma Jointing Mortar is a single component product and needs only addition of water on site hence easy to use.
  • Perma Jointing Mortar achieves high compressive, tensile and flexural strengths apart from its strong adhesive strength.
  • Perma Jointing Mortar is non-shrink when applied in the recommended thickness and does not need elaborate curing.
  • Perma Jointing Mortar is highly thicksotropic hence non slump when applied in vertical surfaces or on the soffits.


Mix Perma Jointing Mortar with water in the proportion of 130 ml water to 1 kg of jointing mortar powder and mix thoroughly using a slow speed mechanical mixer to get a smooth consistency paste. As with all repair jobs the site conditions vary hence the water / powder ratios may be adjusted to suit the application requirements. Apply an epoxy bonding agent such as Perma Master Bond on the surface to be repaired or on the sides of the stone in the joint to be pointed and wait till it becomes tacky which could be two hours from the time of application. Apply the jointing mortar paste on to the surface using a suitable spatula so that the thickness of fill or repair is not more than 20 mm at a time. Should the thickness increase the first layer may be serrated after finishing to create a mechanical key for the second coat. The second coat may be applied after the first coat has hardened leaving it to cure overnight.


Form : Free flowing powder
Colour : Grey
Grain size : Maximum 4mm
Bulk density : 1.48
Mixing ratio with water : 130 ml water per kg of Perma Jointing Mortar
Compressive Strength 28 day : 400kgs/cm2 minimum



Perma Jointing Mortar gives a yield of 12.5 Ltrs. when mixed with 25 Kg powder.60 kgs of Perma Jointing Mortar covers an area of 50 sq.ft if applied to a thickness of 4 mm.


Perma Jointing Mortar is available in 10 kg & 25 kg sacks.


Perma Jointing Mortar has a shelf life of 12 months if kept in a dry environment, in its original packing. If stored in conditions of high temperature and / or humidity, the shelf life may be reduced to as little as 4 months.


PERMA warrants that all products are free from any defects of manufacture and comply with the specifications given in their respective technical data sheet. No warranty can be given as to the results of use because conditions of use, such as site conditions, surface preparations, workmanship, weather, structural issues and other factors are beyond the control of PERMA. Purchaser agrees to seek the advice of qualified professionals to carry out tests & take trials to determine the suitability of products for their intended purpose prior to full scale usage of PERMA products and assumes all risks.

The company does not assume any liability for unsatisfactory results, arising from the use of our products. Purchaser’s sole liability is limited to replacement of product or refund of the purchase price paid if any product proven defective. No other warranties, express or implied, shall apply including any warranty of merchantability or fitness for a particular purpose.
PERMA shall not be liable for any consequential damages arising from the use of our products for unsatisfactory results.

The information supplied in this datasheet is based on our experience through extensive research and is given in good faith in order to help prospective users. We reserve the right to update the information provided in our technical data sheet at any time without prior notice within the scope of technical progress or new developments.

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