When working on a building steeped in history, every detail matters. That was the case at Sidney Sussex College, Cambridge, where the refurbishment of South Court required a modern solution for a very traditional setting.

South Court - a Grade II listed building - features a first-floor terrace that acts not only as a walkway for students, but also as the protective roof over the shop units below. For the project’s architects and surveyors, Pleasance Hookham and Nix Limited, the challenge was clear: improve waterproofing and drainage without compromising the integrity or appearance of the historic structure.

A modern solution for a heritage building The terrace needed new falls, reliable drainage, and a robust screed capable of supporting a mastic asphalt waterproofing system and a tiled finish. It also required a product that would keep the project on schedule and minimise disruption to students and college staff.

To meet these demands, the team turned to Ronafix Pre-Packed Screed 6–50mm - a system known for its strength, low permeability, and consistent performance.

Why Ronafix was the right choice Ronafix Pre-Packed Screed brings several key performance benefits:
• Low permeability, ideal for exposed areas
• High strength for long-term durability
• Negligible shrinkage, ensuring a stable finish
• Pre-measured materials, guaranteeing reliable, repeatable results
• Faster drying times than traditional sand/cement screeds

That last feature made a noticeable difference: early application of the asphalt waterproofing helped reduce delays and kept the project moving smoothly.

From preparation to perfection Cocksedge Building Contractors Limited were appointed to deliver the installation.

Their process included:
1. Preparing the concrete deck in line with Ronacrete guidance
2. Priming with Ronacrete Standard Primer
3. Applying Ronafix Pre-Packed Screed while the primer remained fresh
4. Forming accurate falls to improve drainage for years to come

The result? A modern, durable terrace system that respects the building’s heritage while delivering performance fit for contemporary use.

Preserving the past, building the future The refurbishment at Sidney Sussex College showcases what can be achieved when thoughtful design meets the right materials. Ronafix Pre-Packed Screed helped ensure this historic space can continue to serve students and staff long into the future - safely, reliably, and beautifully.

For more information about Ronafix Pre-packed Screed 6-50mm or any of our other specilast screed systems, contact us on technical@ronacrete.co.uk