API Portland Limestone Natural Stone

High quality natural Limestone for architectural masonry, cladding and Paving

API Stone Ltd, in conjunction with Albion Stone plc, offers this high quality British limestone from the quarries on the Isle of Portland in Dorset, England. API Stone Ltd stock various sized slabs and can provide ashlar cladding, walling, flooring, paving and bespoke carving commissions.

Portland stone has been used in landmark architecture for centuries. The list of high quality references for this stone includes Buckingham Palace and St Paul’s cathedral.

MANUFACTURING TOLERANCES:

The manufacturing tolerance on the thickness and face dimensions of stones is set out in BS 8298 Part 1: 2000 section 7.2 and conforms to the European Standard BSEN 1469.

Many stones will fall into the category of >50mm thick and length or width 600mm) will be within the +- 3mm tolerance and in the majority of cases will allow for +- 1.5mm on the joints for site installation.

On several projects the design team have required exceptional tolerances (eg +- 1mm). The only reliable way of delivering these tolerances is through checking a very large sample of the finished stones using electronic calipers.