Parex Terracaulk 30

1-component, cementitious caulking mortar




Our price

£32.95 £39.54 inc VAT


£41.19 £49.43 inc VAT

BIG SAVINGS ON BULK ORDERS Call 01708 855 698 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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Delivery Schedule

All deliveries are ‘Next working day’ unless otherwise stated. 

Orders placed before 2pm Monday – Friday (excluding Bank Holidays) will be dispatched the same day. Orders placed after this time will be dispatched the following working day. 

Orders for non-stock items will be dispatched within 3-5 working days unless contacted by Customer Services. 

Saturday and timed deliveries are available on request. Please contact customerservices@solseal.co.uk or call 01708 855 698 for more information. 

Please note postcodes in some areas of the Scottish Highlands and offshore addresses require a delivery surcharge and in some cases can take longer to be delivered. Please contact customerservices@solseal.co.uk or call 01708 855 698 for a delivery quote. 

AB36-38, AB55-56, FK17-21, G83, GY9, HS1-9, IM (ALL), IV (ALL), JE (ALL), KA27, KA28, KW0-14, KW15-17, PA20-78, PH15-18, PH19-29, PH32-33, PH45-48, PH30-31, PH34-44, PH49-99, PO38, ZE (ALL) 


Our offices are and warehouses are open from Monday to Friday 8am to 5pm. We are closed on weekends and Bank Holidays. 

‘Working days’ is defined as Monday to Friday excluding Bank Holidays.