Retractable Kalwall allows open air swimming

Kalwall translucent cladding, exclusively available in the UK and Ireland from Structura UK Ltd, has been used for a clever retractable roof system at Club One in Maryland, USA.

Kalwall and its subsidiary, Structures Unlimited, worked with SEI Architects to engineer at 40 x 25 metre enclosure for Club One’s aquatic centre comprising six-lane swimming pool, warm water leisure/therapy pool and a kid’s pool with slide and beach entry.

The pre-engineered aluminium frame pool enclosure system features a Kalwall translucent panel roof system with two unique openable roof systems.

The retractable roof systems help create an atmosphere that allows the facility to be operated as an outdoor pool in spring, summer and autumn and as an indoor pool in winter months. With diffused natural daylight and resistance to solar gain, coupled with significant reduction in ventilation, cooling and dehumidification energy costs, energy-consuming artificial lighting and air-conditioning costs are dramatically reduced.

The lightweight system also reduces the need for supporting structures maximising the usable space while offering the highest protection in terms of wind-borne debris and resistance to impact, abrasion and point loads.

Kalwall’s insulation properties mean ‘U’ Values of up to 0.28 W/m2K can be achieved. This is as energy efficient as a normal cavity wall and four times better than insulated glass units. The strong and lightweight panels feature a colour stable, UV resistant and self-cleaning surface, meaning the additional cost of ongoing maintenance is kept to a minimum.

Kalwall is a popular choice for swimming pools and leisure installations and offers many advantages over traditional glazing. The unique ability to transmit large amounts of usable light with relatively low levels of solar heat gain means less radiant energy transmitted and this, coupled with diffusion, does away with the hot spots and glare.

Glare on a swimming pool surface is a common concern with dazzling rippled sunlight bouncing off the surface which can cause discomfort to swimmers. In addition, it can be a serious safety concern as lifeguards can struggle to see swimmers should they be in need of assistance.