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PROJECT PROFILE
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Mill Hill School |
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The Marnham Building at Mill Hill School in northwest London is being refurbished as part of a major project being carried out at the school by Mansell. The basement of the building had damp problems to the floor slab, previously painted brick walls and concrete filler joist soffit below an external pedestrian walkway.
The basement is being converted into classrooms. |
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Repairs were completed with weber.cem hand applied repair mortars. The external walkway was treated with a Tor coating to provide a waterproof nonslip membrane.
Grit blasting techniques were used to remove defective coatings from the walls, to etch glazed brick and prepare to floor in preparation for waterproofing.
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Internally a chemical dpc was initially injected to the ground retaining walls using Remmers Aida Injection Cream. Defective brickwork pointing was removed and replaced with polymer-modified mortar to provide a suitable background surface for the waterproofing render treatment.
Weber Motex Dry-rend waterproof render, consisting of bonding coat and 2 further coats to a total of 12mm, was applied to the prepared walls with a fillet and mastic detail at the floor junction.
Finally the prepared floor was overcoated with 2 coats of RIW Toughseal followed by a self-levelling screed to protect the newly applied membrane.
The main contractor’s finishing trades completed the conversion to classrooms with additional blockwork and plaster walls and joinery work.
Project quantities15000 kg Motex DryRend 55m Enforce cfrp
Tel 01753 825511 Web www.structren.co.uk |
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Following opening up and investigation the Company was awarded a design and construct contract for the repair and strengthening of the defective filler joist steels and concrete surround.
Steel joists were grit blasted and Weber Building Solutions Enforce cfrp plates were bonded to the underside with EP Structural Adhesive.
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