The Shard – Screeds

The skyline of London has changed a lot over the last few decades; starting in 1991 with the appearance of One Canada Square and its neighbouring Canary Wharf tower blocks. In 1999 the London Eye appeared on the horizon at the South Bank; then in a project lasting from 2009 to 2012 the Shard rose above them all, creating another vantage point from which to view the capital.


The Shard is a magnificent feat of architecture and engineering and is the tallest building in the European Union. It is 306 metres high and has 87 floors; it incorporates state of the art offices, apartments, a hotel, restaurants, retail outlets and of course a viewing gallery.


A thin screed was needed for several floors in the Shard’s upper levels and Ronafix Pre-packed Screed 6-50mm was specified because of its durability and it’s high compressive, flexural and tensile strengths. As a pre-packed system it provided the specifier with assurance of consistent high quality.


Ronafix Pre-packed Screed 6-50mm is supplied as a two component product comprising powder and polymer gauging liquid; used with Ronacrete Standard Primer it bonds to suitably prepared surfaces and is water resistant. It can be used as thinly as 6mm for bonded screeds or 35mm for unbonded or floating screeds. Used as a floating screed it is compatible with under floor heating systems.

RonaScreed FastDry Prompt – benefits and drying

RonaScreed FastDry Prompt (formerly RonaScreed 8 Day Overlay) is so-called because it is a fast-drying screed additive which enables a 50mm thickness of 3:1 sand/ cement screed to be overlaid with moi ...

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Drying of Screeds

BS 8204-1 “Concrete bases and cementitious levelling screeds to receive floorings — Code of practice” section 6.11.1 suggests the following calculation for drying of screeds with no fast drying additi ...

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Avoidance/ Mitigation Of The Effects Of Common Forms Of Cracking In Cementitious Screeds

Aggregate is usually 0–4 mm and is mixed with cement in the ratio of 1:3 or 1:4 cement to sand, depending on strength requirements and drying requirements. For total screed thicknesses in excess of 50 ...

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