222 Upper Street

Project Overview

  • Project Name :

    222 Upper Street
  • Location :

    Islington, London
  • Area :

    150m2 (approx.)
  • Client :

    Islington Council
  • System Manufacturer :

    Sika Liquid Plastics
  • Completion Date :

    January 2019
  • Contract Value :

    Circa £61,000

Background Of The Project

Allard Construction Ltd were employed by Islington Council to provide the maintenance department with safe access to the level 4 roof areas. We were also contracted to overlay the existing asphalt with Sika Liquid Plastics waterproofing system, providing a 15-year guarantee upon completion.

Description Of Works Carried Out

A man safe system was installed by Allard Construction Ltd along the building line meaning that the maintenance department could safely connect on with harnesses prior to entering onto the roof area. Once installed we then overlaid the existing asphalt with Sika Liquid Plastics Decothane Ultra 15 waterproofing system. The existing chases were terminated and sealed with mastic to finish.

Challenges Faced

As this was a public building occupied by office staff, we had to ensure that noise levels were kept to a minimum to avoid any inconveniences being caused.


The installation of the man safe system and application of the waterproofing system were carried out over the weekends to avoid disruption during working hours. We carefully selected the Sika Liquid Plastics waterproofing system as it is virtually odourless meaning that no high solvent smells would be distributed to the offices.
  • Head Office:
    Units 13-15, Maple Park, Essex Road, Hoddesdon, Hertfordshire, EN11 0EX
    Tel: 01992 463090 Fax: 01992 440798
Other information

Registered Office : Unit 13, Maple Park, Essex Road, Hoddesdon, Hertfordshire. EN11 0EX | Registered in England and Wales: 00587057 | VAT No: 213 5564 82 | Directors: JD Sullivan SA Sullivan AP Chapman

Contact Us
  • Fax:
    01992 440798
  • Email:

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Copyright 2018 Allard Construction Limited.