Balancing New Basement Living with Natural Light
Hamilton Terrace sits within the St John’s Wood Conservation Area, an enclave known for its nineteenth century villas, classical architectural detailing and long-standing residential prestige. The rear garden offered an opportunity for additional living space, but the depth and scale of the new basement created a risk of dark interior environments. The swimming pool, gym, media room and ancillary spaces required direct access to daylight to avoid becoming disconnected from the rest of the house.
The pool hall in particular presented a technical challenge. High humidity and a warm internal atmosphere would naturally cause condensation on conventional overhead glazing, obscuring views and reducing light transmission. Any glazing inserted into the garden also had to be strong enough for foot traffic while appearing visually minimal from above. Maintaining the structural and aesthetic integrity of the listed garden setting was central to the project.
Heated Glass Rooflights for Condensation Control
To overcome the environmental challenges created by the swimming pool, IQ Glass designed a series of structural walk on rooflights fitted with heated glass technology. These units were installed flush into the lawn directly above the subterranean pool, creating a seamless surface at garden level while allowing clear views down into the space below. The heating element within the glass warms the inner face of each rooflight, preventing condensation from forming and ensuring optical clarity at all times.
These three rooflights incorporated electrically controlled heated glass systems complete with transformers, microprocessors and all associated control gear. This created a highly stable glazing environment that could respond to the pool’s humidity and temperature cycle. The walk on specification used multiple layers of toughened laminated glass, delivering both structural integrity and exceptional durability.
Structural Rooflights and Frameless Internal Glazing
In addition to the heated units, IQ Glass installed a large fixed structural rooflight supported on low iron glass beams. This element brings natural light into a rear garden room that acts as an additional point of access between the basement and the garden. Its design supports a sense of openness and acts as a counterpoint to the extensive subterranean accommodation beneath. A solar control coating was included to reduce the risk of overheating in this glazed space during summer.
Further frameless glazing and aluminium doors were added throughout the internal layouts, including structural glass panels and bespoke door assemblies positioned to optimise the flow of natural light through five floors of accommodation. These elements work in harmony with the walk on rooflights to create a coherent architectural language that links the basement with the upper levels of the villa.
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