Kelson House, Isle of Dogs

Scope of Works

Lawtech were commissioned via a Pre-Construction Services Agreement (PCSA) to undertake intrusive site investigations to a 24-storey occupied residential block in the Isle of Dogs. This allowed for the creation of a design and plan of work that satisfied the requirements of One Housing and all other stakeholders. Following the failure of the existing system to comply with requirements, Lawtech were commissioned by One Housing to remove and replace the cladding system on the stairwell as well as replace the windows, and spandrel panels.

The cladding system was replaced both externally and internally, requiring careful management to ensure residents’ safety. The existing combustible ACM system was replaced with Europanel A2-s1, d0 panels with a Metsec framing system and Rockwool SP FireStop Slab insulation. Regarding window replacements, SAPA windows were installed.

Key Challenges

• Works were restricted due to the presence of a peregrine falcon on the roof. They were only allowed to take place between July and February as the bird migrated in these months.

• The line and levels of the building provided a challenge as it had seemingly moved, with a 75mm deflection from top to bottom. This caused a delay of approximately three weeks and required the introduction of additional materials.

• Proximity to the Thames provided a challenge due to high winds. For example, the hoist was out of use for a period because of winds.

• Working internally and having to arrange appointments to allow entry to residents’ flats, especially in light of the COVID-19 pandemic.