Practical points for boundary work in Finchley Central
DBS-relevant site rules on sensitive sites
Sites such as schools, nurseries and some healthcare premises commonly require anyone attending, including contractors, to hold or provide evidence of an enhanced DBS check, or to be directly supervised at all times if they don't.
This is a site management requirement set by the school or institution rather than a universal legal rule for tradespeople in general, and requirements vary between individual sites and local authority policies.
Where a job is known in advance to be on this type of site, confirming the DBS or supervision requirement before booking the work avoids a contractor turning up unable to proceed on the day.
Gate widths for cycle access
A side gate wide enough for a wheelbarrow isn't automatically wide enough for a cargo bike or a bike with panniers, which is worth checking against the actual bikes a household owns rather than a generic standard width.
Cycle storage tucked behind a side gate also needs a gate that can be propped open safely while wheeling a bike through, rather than one that swings shut under its own weight mid-manoeuvre.
Where cycle access is a genuine daily-use requirement, a slightly wider opening at quote stage is a cheap addition compared with widening an existing narrow gate later.
Ivy growth as a structural load
Established ivy doesn't just sit on a fence for appearance — its woody stems and aerial roots add real dead weight, and a mature growth can add the equivalent of several boards' worth of load to a panel over years of unchecked growth.
Ivy also holds moisture directly against the timber or brickwork it covers, which accelerates rot or mortar erosion underneath even though the visible growth looks healthy.
Removing mature ivy from a fence intended to stay in place needs care, since cutting the base and letting it die back gradually avoids suddenly exposing timber that has been softened by long-term dampness underneath.
Exposed plots and wind funnelling between buildings
Wind doesn't just hit a fence head-on — gaps between buildings, especially in newer estate layouts with narrow side passages, can funnel and accelerate wind locally well beyond the general forecast for the area.
A fence positioned at the end of such a gap can see significantly higher loading than an identical run a few metres away in the lee of a building.
Recognising these funnelling positions at quote stage, and specifying heavier posts or a part-open panel design there, is more reliable than treating an entire plot as uniformly exposed or sheltered.
Raised beds built directly against a fence
A raised planting bed built with its back edge against a fence line keeps damp soil and mulch in permanent contact with the lowest boards or gravel board, which accelerates rot at exactly the point most vulnerable to moisture.
Lining the inside face of the bed against the fence with a damp-proof membrane, rather than backfilling soil directly onto the timber, reduces this contact without changing the visible design.
This detail is easy to miss at the planning stage since the bed and the fence are often specified and built by different trades without either flagging the interaction.
Overhanging roofline drip lines onto a boundary
A fence running close to a house or outbuilding without gutters, or with a gutter that overshoots during heavy rain, can sit directly under a concentrated drip line that soaks one section of the run far more than the rest.
Over time this shows up as a localised patch of accelerated rot or algae growth that doesn't match the general weathering pattern of the rest of the boundary.
Where this can't be resolved by fixing the guttering itself, a slightly increased offset from the wall or a more resistant board section at that specific point avoids repeat localised failure.
