The Boathouse

Contemporary Lakehouse Uses Slim Framed Sliding Glass Doors

A Glazed Boathouse in Hertfordshire With Open Corner Sliding Glass Elevations 

Situated on a private lake in Hertfordshire, The Boathouse is a contemporary waterside structure designed as both a retreat and a multi‑functional space within an historic estate landscape. The architecture focuses on openness, flexibility and immersion within the natural surroundings. IQ Glass was appointed to design and install the specialist glazing for the project, creating two slim framed sliding glass elevations that transform the building into a fully open lakeside pavilion. The result is a striking glazed boathouse in Hertfordshire with uninterrupted views across the water and surrounding woodland.  

 

 

Featured In

Homebuilding and Renovating April 2016 – The Lakehouse

Project Partners

Architect- Merrett Houmoller 

Photographer- Alan William 

Location

Hertfordshire

Light, Flexibility and Environmental Integration 

The Boathouse is located within a tranquil former estate that once formed part of an extensive park grounds. Historically used for agriculture and later incorporated into a country club, the landscape today is defined by mature trees, open water and remnants of historic land division. The new structure had to sit lightly within this setting, with the ability to open on all sides to minimise visual boundaries and maximise the sensation of being on the lake itself.  

The architects designed the building with a simple pitched roof profile and a traditional silhouette, but with a façade strategy that would allow entire elevations to disappear. The use of SIPs construction demanded precision integration of glazing pockets, while the inclusion of manual burnt‑timber shutters added a layer of flexibility for privacy and solar control. The glazing supplied by IQ Glass needed to respond to these technical requirements while preserving the purity of the design. 

 

 

Two Seamlessly Connected Sliding Glass Elevations 

IQ Glass installed two slim framed sliding glass elevations arranged around a 90-degree opening corner. Each elevation is constructed as a three panel, three track sliding system designed to slide back into concealed pockets, removing the entire façade from view when fully opened. This creates a continuous, unobstructed opening onto the lake and surrounding decking.  

The front elevation measures 5.2m wide and slides into a 1m deep pocket, while the side elevation measures 7m long and recesses into a deeper 1.7m pocket. The sliding height of 2.9m delivers a scaled glazing proportion that enhances the vertical presence of the space. At the junction between the two elevations, a true moving corner connection allows both façades to retract simultaneously to form a wide, panoramic aperture. 

The slim 21mm profile of the system supports the architectural intent: crisp lines, maximum glass surface, and the highest achievable clarity between interior and landscape. 

Privacy and Solar Control Through Integrated Timber Shutters 

While the goal of the project was transparency, the building also required flexibility. Hand‑operated burnt timber shutters were installed as a secondary skin, allowing the boathouse to function as a private enclosure when needed. When shut, the building presents a monolithic timber façade within the landscape, concealing the glazing and emphasizing the calm sculptural form of the structure.  

The slatted shutter design permits dappled light to enter the interior even when closed. This ensures the boathouse remains usable throughout the day without artificial lighting. The integration of the shutters with the sliding pocket door design required careful coordination between the glazing installation and the timber envelope.

A Recognised Architectural Landmark 

The Boathouse was shortlisted for the AIA UK Honors 2016 Excellence in Design Awards (Young Architect Award category), reflecting its architectural ambition and quality. Its location within the former estate also links it to one of Hertfordshire’s most culturally layered landscapes. The glazed elevations contribute significantly to the building's appeal, creating a rare lakeside pavilion aesthetic sought after in luxury residential developments 

Technical Details 

  • Two elevations of slim framed aluminium sliding doors forming a 90 degree opening corner. 
  • Front elevation: 5.2m wide, three panel, three track sliding system retracting into a 1m partial pocket. 
  • Side elevation: 7m wide, three panel, three track sliding system retracting into a 1.7m pocket. 
  • Overall sliding height: 2.9m. 
  • Sliding door system: thermally broken aluminium profiles with a 21mm frame. 
  • Glazing build up: fully insulated double glazing with low e coating and argon gas filling.  
  • System performance: Uw ≥ 1.1 W/m²K, air permeability Class 4 (EN 12207), rain resistance Class 8A (EN 12208), wind load resistance Class C4/B5 (EN 12210), sound insulation up to 39 dB (ISO 717‑1), burglary protection up to PAS24. 
  • All thresholds installed as flush, step free transitions compliant with DIN 18040‑1 and DIN 18040‑2.  

A Glazed Boathouse in Hertfordshire  

For architects, developers and homeowners planning a glazed boathouse in Hertfordshire, this project demonstrates how slim framed sliding systems and pocketed corner openings can elevate a lakeside structure into a fully immersive landscape experience. The Boathouse highlights the value of precise glazing design in creating flexible, light filled spaces that respond elegantly to their natural setting. 

If you are exploring plans for a luxury waterside building or require technical guidance on specialist glazing for complex architectural forms, IQ Glass can provide early stage feasibility advice, performance driven specifications and fully bespoke glazing solutions. Contact our technical team to begin your project.