A proper foundation transforms your garden shed from temporary storage to permanent asset. Throughout Colliers Wood's mix of Victorian terraces and modern developments, we've learned that every garden presents unique ground challenges.
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Behind those typical SW19 garden gates lie everything from London clay to old building rubble. Installing shed bases here requires understanding both the ground beneath and the weight above. Whether you're tucking a compact workshop behind a Merton High Street terrace or positioning a larger summerhouse in those generous plots near Wandle Park, the foundation principle remains crucial.
Ground preparation starts with excavation to stable subsoil, typically 150mm below surface level. MOT Type 1 hardcore creates the substrate, compacted in layers using a wacker plate. Steel mesh reinforcement sits centrally within 100mm of concrete, poured level and floated smooth. This method prevents the seasonal movement that causes so many Colliers Wood sheds to develop that familiar lean.
Living locally means understanding SW19's drainage quirks and planning regulations. Every base includes proper fall-away angles and damp-proof membrane positioning specific to your garden's characteristics.
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Standard 8x6ft bases start around £450-550, while larger 12x8ft installations typically range £750-900. Complex access through narrow Victorian side returns or sloping gardens near the Wandle may affect final costs.
Absolutely - from the Baltic Close developments to established roads like Cavendish and Christchurch. Regular projects take us throughout SW19, plus neighbouring Mitcham, Tooting and Wimbledon borders.
Most bases take one full day from excavation to finishing. Concrete requires 48 hours before shed assembly, though we often complete Friday installations ready for weekend building projects.
Each installation carries decade-long structural coverage against settlement or cracking. This includes free inspection should any concerns arise - though properly installed bases rarely need attention beyond their first winter.
Certainly - from L-shaped corner summerhouses to hexagonal gazebos. We calculate load points and adjust reinforcement accordingly, ensuring even weight distribution regardless of your building's footprint.
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