Q1problem
See model answer βOpal Developments Ltd enters into a contract with Jasper Construction Ltd to build a luxury residential complex for Β£20 million, to be completed in 24 months. The contract incorporates the JCT Standard Building Contract 2016 with bespoke amendments. Clause 2.4 (as amended) provides: "The Contractor warrants that all materials used shall be of good quality and fit for their intended purpose. The Contractor shall be liable for any defects in materials for a period of 15 years from practical completion." After practical completion, serious defects emerge: (a) the cladding panels, sourced by Jasper from CladTech Supplies Ltd, contain a fire-resistant core that does not meet building regulations; (b) the underfloor heating system, installed by Jasper's subcontractor HeatWorks Ltd, is defective and causes water damage to 12 apartments; (c) the roof membrane, specified by Opal's own architect, fails prematurely because the architect specified an unsuitable product. The total remediation costs are Β£6 million. Opal seeks to recover the full amount from Jasper. Jasper argues it is not liable for the architect's specification error and seeks contribution from CladTech and HeatWorks. Consider issues of strict liability vs fault-based liability, the scope of Clause 2.4, the architect's specification, and Jasper's rights against its supply chain.