Older state houses sit alongside private homes across Bader, and roofs on homes of this kind are often concrete tile or painted galvanised steel. Painted galvanised profiled steel covers 28% of New Zealand houses in BRANZ house condition research, more than any other cladding, and masonry tiles come second. Both wear with age. Tile coatings fade and let the tiles absorb water, while steel rusts first at fixings, laps and under flashings. We repair either, or re-roof in long-run steel when the cladding is spent.
Age matters for another reason. WorkSafe's asbestos in the home guidance treats homes built or altered between 1950 and 2000 as quite likely to hold asbestos, and it names asbestos-cement roof sheets as one of the places to look. On any Bader roof that looks cement-based, we assess first, arrange testing, and have a licensed asbestos removalist take it off before the new roof goes on.
A third of Bader's occupied dwellings, 33.2%, were described as damp always or sometimes, going by the 2023 Census. Damp has several causes. With rain falling on around 126 days a year in Hamilton, checking the roof and gutters first lets you rule a roof leak in or out before chasing anything else.