b'BUILDING RESTORATIONwith WSP Canada Inc., some projects have allowed for the flexibility to introduce a modern look to an older building,as with the faade renewal of theRichmond-Adelaide Centre (1923) and the Simpson Tower at 401 Bay (1968). Others have required a more stringent historical approach.You put a lot of time into colour and texture matching; with repair mortars, colour matching is always a bit of a challenge, says Kelk. For instance, maintaining exterior cladding at College Park involved matching the existing Tyndall limestone from Manitoba. Sometimes the buildings have been sitting in downtown Toronto with our pollution for decades. Do you do a colour match to the original stone, or do you try to incorporate some of the discolouration due to air pollution into it?Renowned architect Mies van der Rohes iconic TD Centre is not only a historical gem, but also a workplace for more than 20,000 people. Kelk has worked on numerous projects there, ranging from roofing and cladding repair to maintenance of the Insulated Glass Unit TORONTOS MUSEUM OF CONTEMPOARY ART IS HOUSED IN THE FIRST FIVE FLOORS(IGU) and plaza renewal. These all had to OF WHAT WAS ONCE THE TOWER AUTOMOTIVE BUILDING, BUILT IN 1919 be carried out with minimal disruption to the daily users of the space.Like Notre-Dame, the TD Centre, College drains. Multiplex installed nine temporaryADDITIONALPark, Massey Hall and the MoCA building wells to pump and redirect the water toCONSIDERATIONS are an essential part of the urban fabric enable the elevator slabs to be poured. A building doesnt have to be afor thousands of Torontonians. Thanks to designated heritage site to requirethe unique skillset of this citys specialist Before any of this could be accomplished,restoration and preservation expertise.construction professionals, theyll be significant abatement was required.For Greg Kelk, director, building sciencearound for generations to come. In addition, paint was matched to the existing building colour and we Blueskinned and capped to existing parapet profiles, Manley says.Creative compromises had to be reached in some areas. The owner (Castlepoint Numa) wished to retain the century-old handrails, which were non-conforming, as well as the remarkable antique fire doors. With the handrails, says Manley, the compromise [to meet code] was to slightly modify them, using the same material and adding in steel mesh guards.The existing fire doors were restored, sealed and rehung on the existing hardware at the entrance to each floor. An extra one was used to enclose the generator, which had to be installed to guarantee uninterrupted climate control in the museum spaces.BUILDERSDIGEST Quarter 2 202027'