Reconstec 900

Repointing mortar for sandstone, limestone, granite and brick


RECONSTEC 900 is a special formulated mortar for the restoration of natural stone mortar joints. It is recommended for joints on grade and above or where deicing salts are used in winter. It is a special mix of hydraulic cements and natural sand. Contains no synthetic polymers.


Application time: Approximately 15 minutes after mixing. Application time is dependent on temperature-it is faster in heat, slower in cool.
  Sandstone Limestone Granite
Compressive strength:
(ASTM C-109) MPa at 28 days

2 to 3

2 to 5

10 to 16
Specific Gravity: 1,4
Coverage (linear meter): 161 142 125
  (10 mm joints at 10 mm deep per 22,7 kg bag)
Mixing Ratio: The mixing ratio is approximately 5 parts powder to 1 part water by volume.
Finishing Time: Approximately 30 minutes or when the mortar in the joints is thumbprint hard.
Packaging: Bag contains 22,7 kg (50 lb).
Shelf life: 1 year in original, unopened bag.


Joints to receive the mortar must be sound and free of all dust, dirt, grease and other bond inhibiting materials from surface. Preparation work should be done using manual or pneumatic cutting techniques without disturbing the stone or brick. Unsound mortar should be cut out to a depth of 1cm (½") – preferably 2 cm (¾").


The mixing ratio is approximately 5 parts powder to 1 part water. Use clean container. Pour water into mixing container. The mixing may be done by hand or using a slow speed drill (300-450 rpm) with a mixing paddle. The mortar should be the consistency of damp sand. Do not over water. Do not over-mix. Working time is approximately 15 minutes.


Wet the cleaned joints just before applying the mortar, just enough to dampen the surface. Use appropriate pointing tools so that it matches the original joint profile. The mortar should be firmly pressed to form a packed joint without voids.


Curing is not necessary.


Remove the mortar from tools and mixing equipment with water. Cured material can only be removed mechanically.


Avoid eye-contact and prolonged contact with skin. May cause irritation to sensitive skin. In case of skin or eye contact, wash thoroughly with water. If eye contact, consult nearest doctor.



Information given is correct to the best of our knowledge and the product is satisfactory for the purpose for witch it is intended. However, no guaranty, express or implied is given because every possible variation in the methods of its use or conditions under witch it is applied cannot be anticipated. Our liability under this guarantee shall be limited to replacement of our product found to be defective or at our option, to the refund of the purchase price of said product.

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