Parex Terracaulk 30

1-component, cementitious caulking mortar




Our price

£26.95 £32.34 inc VAT


£26.95 £32.34 inc VAT

HUGE SAVINGS ON BULK ORDERS Call 0330 053 6145 for a bespoke quote

Parex Terracaulk 30

Parex Terracaulk 30 is a Portland cement powder mix designed for easy mixing and placing in shafts and tunnel areas. The mixed product may be hand applied into caulking grooves within segmental concrete linings. Terracaulk 30 may also be used to cap off bolthole pockets. The mix design for Parex Terracaulk 30 contains a blend of Portland cements, pulverised fuel ash, high quality graded silica sands and additives to assist with mixing, placing and hardening.

Terracaulk 30, once applied is easily finished to the required profile. The product is chloride free and is safe to use in contact with steel elements.

Uses include:

  • Caulking of pre-cast concrete segmental tunnel listings
  • filling of bolthole entry points to protect steel bolt heads


Specification Outline

Caulking applied to segmental caulking grooves shall be carried out using Parex Terracaulk 30 as manufactured by Parex Ltd. The product must be stored, handled and used strictly in accordance with the manufacturer’s instructions.



Parex Ltd has an integrated management system which is externally accredited to ISO9001:2008, ISO14001:2004 and OHSAS18001:2007.

This product also conforms to BES 6001.



Terracaulk 30 has been tested in accordance with the appropriate parts of EN 12390.

Instructions For Use

Contact surfaces should be sound and clean. Slight dampening of the surfaces will assist adhesion.

No priming is necessary other than the slight dampening of the contact surfaces. Any standing water must be removed.

Terracaulk 30 is supplied in 25kg bags. The water requirement to achieve a good caulking mortar is 4.75 litres to 5.00 litres per 25kg bag. Pour the required quantity of water into a suitable mixing vessel. Slowly add the powder to the water whilst continuously mixing. Mechanical mixing should be used if required using a slow speed high torque drill with a Mortar Stirrer or a forced action mixer such as the Creteangle


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SPC Delivery Terms

PLEASE NOTE: Due to the ongoing COVID situation please allow 4 to 5 working days for delivery unless “Next Day Express Delivery!” is stated beside the Product Name on your Sales Confirmation, in which case your goods will be delivered on the next working day** for orders received by 11am. Please be assured we will dispatch your order as quickly as possible*.

(*subject to stock availability – **please note our warehouses are not open at weekends or on public Bank Holidays)

The following Sika items will be next working day delivery (if ordered by 11am):

Sikaflex Pro 3
Sikaflex Pro 3 Self Level
Sikaflex Construction
Sikaflex Tank N
Sikabond TF+ N
Sika Membran EPDM
Sikaflex TS+
Sika Sanisil HM
Sikasil Pool
Sika Primer 3N
Sika 600ml Bulk Gun
Sika Superflow Cartridge Gun

*where stock allows