RTU retarded mortar ready to use
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about ready mixed mortar

Mortar has been used for centuries as a means of adhering bricks or concrete blocks to one another.

RTU mortar is suitable for major building projects to domestic DIY jobs. It is a factory produced building mortar that is delivered to site ready to use, on time, with no further mixing required. It is available as an 8 or 36 hour retarded mortar which remains useable for this period which offers greater flexibility to your project. RTU mortar is delivered to site in quanities to suit the your project's requirements. Whether delivered in tubs or disposable bags the building mortar is ready for immediate use.


  • No need for on-site mixing equipment or storage facilities: delivered premixed therefore no further mixing required.
  • Saving on time and labour costs: delivered ready for immediate use.
  • Reduced wastage and pilferage: 8 or 36hr retarded mortar which remains useable for this period.
  • Quality assured product: 3rd party accredited.
  • Accurate cement content: Computerised plant.
  • Guaranteed meeting specification: Technical department to advise on specification.
  • Quality service: same day delivery available.
Belfast building site using RTU ready mixed building mortar - NI


The quality of our service is highly recognized throughout the industry as we understand the pressure to complete jobs on time and within budget. Our building mortar can be delivered in tubs or disposable bags which hold 0.33 cubic metres, which ever suits you best. RTU place no limit to the number of deliveries to your site yet still providing the same day delivery, within 2 hours (approx) of ordering. Deliveries of building mortar is available to the Greater Belfast area and throughout Northern Ireland. In simple WE WILL DELIVER!


RTU factory produced mortar delivers quality time after time. All mortars are manufactured in accordance with BS EN 998-2 by our advanced computerized batching plant. This ensures a consistent mix, with guaranteed mix proportions and compressive strengths, which is one of the many benefits over site mixed mortars. RTU operate a factory production control system which ensures our mortars comply with ever increasing tough European regulations. RTU has influence on the British Standards as we are members of MIA (Mortar Industry Association) and sit on the MIA technical panel which is the recognized UK authoritative voice on mortar technology.


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