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Larsen Building Products

Larsen Building Products

Building products that perform. Made in Belfast, recognised industry-wide.

+44 (0)28 9077 4000 Website

Larsen Building Products has been manufacturing quality building products since establishment in 1975.


Builders Merchants



Silo Mortars




Larsen has grown to become a market-leading manufacturer of a comprehensive range of products for the construction industry, from admixtures and streetscape products to tiling and builders’ merchants, Larsen covers nearly every corner of the construction industry.

2008 saw the next step in Larsen’s continued growth with the completion of a purpose-built manufacturing facility in the Port of Belfast. This industry leading, computer-controlled facility has the production capacity of over 100,000 tonnes of product annually.

Larsen prides itself on the unrivalled level of service offered to our customers. This commitment goes further than just ensuring deliveries arrive promptly. Our wide experience of the entire construction process draws on the expertise and breadth knowledge gained over the last 45+ years to provide an unsurpassed level of technical back-up and know-how.

Larsen commits significant resources to the development of new products and the continual improvement of existing products. Our highly trained research department use cutting edge experimental methods and laboratory equipment to develop products tailored to the end user’s requirements. After a product has been developed in the laboratory, long hours are spent on site testing the product with real end users.

Our relationship with end users is critical to the development process and we highly value the opinions of experienced tradesmen.

Trade names

  • Chemcrete
  • dry4
  • flotherm
  • Larsen
  • Streetscape
  • Silo Mortar
  • Technical Mortars
  • Admixtures
  • Tile Grouts
  • Bedding Mortar
  • Priming Slurry
  • Fine Bedding Concrete
  • Gun Pointing Mortar
  • Tile Adhesive
  • Epoxy Mortar
  • Brush Joint
  • Flowable Jointing Mortar
  • Self Levelling Compound
  • Speciality
  • Cement Floor Levelling
  • Concrete Repair
  • Damp Proof
  • Floor Paints
  • Floor Screeds
  • Highways Maintenance
  • Levelling Compound
  • Plaster Render
  • Pothole Repair
  • Precast Concrete
  • Ready Mixed Concrete
  • Regeneration Schemes
  • Road Maintenance
  • Surface Treatment
  • Technical Support
  • Wood Preservatives