Anyone comparing quotes for a new roof in Lawrence Hill may notice that the tile quantity listed is slightly higher than the bare figure worked out from the roof's area. This is not an error or a way of padding the price, but a standard allowance for cutting and breakage that any experienced roofer builds into their ordering from the start, and it is worth understanding rather than viewing with suspicion when reviewing a quote.
Cutting tiles is unavoidable around hips, valleys, verges and junctions with chimneys or dormer windows, and every cut tile uses up a whole tile to produce a smaller piece. On the varied roofscapes found across Lawrence Hill, where many terraced properties have been extended, converted into flats or fitted with rear additions over the years, there tend to be more of these junctions than on a simple, uninterrupted roof plane, which pushes the required allowance a little higher. A skilled roofer will also plan cuts to minimise waste where possible, using offcuts from one section at another junction rather than starting a fresh tile every time.
Breakage is the other factor. Tiles and slates can crack during transport, while being lifted onto the roof, or simply through ordinary handling during installation. A sensible contingency, typically a modest percentage on top of the calculated quantity, covers this without needing a second delivery mid-project. Running short partway through a job is far more disruptive and costly than ordering a small surplus at the outset.
There is also the question of colour and batch matching. Roof tiles are manufactured in batches, and later deliveries of the same product line are not always an identical shade to earlier ones. Ordering enough tiles from a single batch at the start of a Lawrence Hill re-roof avoids the risk of a visibly mismatched patch appearing later, which is especially noticeable on a roof visible from a busy street or from neighbouring properties.
The exact wastage percentage applied is not arbitrary either. It tends to reflect the specific roof in question, taking into account how many hips, valleys and abutments it has, how fragile or resilient the chosen tile or slate is known to be, and how easy that particular product is to reorder if stock runs low. A simple, roughly rectangular roof with few junctions might only need a small allowance, while a more broken-up roofline typical of an altered or extended Lawrence Hill property could reasonably need a larger one, and an experienced roofer will judge this on the specifics of the job rather than applying the same flat percentage to every quote.
Brunel Roofing Bristol builds a sensible wastage allowance into every material order, so that cutting and breakage do not cause delays or mismatched patches on your new roof. If you are planning a re-roof in Lawrence Hill and want a realistic, well-considered quote, we would be glad to help.
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