When the owners of a popular holiday park required an extension to their entertainment clubhouse, the specification of a quality watertight roofing system was essential in ensuring the building withstood the long-term rigours of its wild and windy seaside location, whilst enhancing the structure’s appearance – Sika-Trocal provided the perfect dual solution.
Contractors H&B 2000 Limited were appointed to extend the clubhouse/dining area at Coopers Beach, a Park Resorts holiday parkin East Mersea, Colchester. The designers, Leisure Concepts, had specific requirements for the new building’s roof system which had to be of the correct specification to combat wind uplift pressure.
It was also required to replicate the look of a traditional standing seam metal roof and be light enough for the building’s timber structure. With its well-earned reputation as a proven fast, effective and adaptable waterproof roofing solution, Sika-Trocal Type S system was deemed ideal for the project.
Sub-contractors, Goldcrest Roofing Services, were selected to install 250m2 of 1.1m wide Sika Trocal Type S on the new extension. The Type S membrane is ideal for mechanically-fastened roofs in both new build and refurbishment applications. It does not require a separate fastening system for the thermal insulation as the Sika-Trocal disc system utilises the same disc and fastener for securing both the insulation and the waterproofing membrane. The exposed nature of the roof system enables the ability for future alterations to be easily undertaken. The Type S membrane carries full BBA accreditation with a lifespan in excess of 35 years.
Before installing the Type S membrane, the challenge for sub-contractors, Goldcrest Roofing Services, was to provide a uniform look between the new and existing roofs - which were on different levels - without compromising the building’s aesthetics and thermal performance. This was achieved by removing the box guttering from the existing metal-sheeted flat roof and inserting a plywood upstand beneath its eaves to prevent cold bridging at the junction between the roof and the exterior walls. It also meant the new roof was level with the existing one.
As part of the Sika-Trocal Type S system installation, Sika S-Vap 500E, a non-decaying unsupported vapour control layer, was first applied to the plywood substrate. A layer of Sika-Trocal INNOfix, a high performance, foil-faced insulation was then installed. This rigid thermoset polyisocyanurate (PIR) is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP), proving its environmentally-friendly credentials as well as its low-energy properties.
Sika-Trocal S provided the system’s final layer. The homogeneous single-ply sheet membrane is designed for use as an exposed roof waterproofing solution in mechanically fastened roofs. It contains ultra violet stabilisers and fire retardants and is highly resistant to ageing and industrial pollutants.
After installation the product requires no further surface treatments or maintenance throughout its service life. The high elasticity of Sika-Trocal S allows it to absorb all movements that occur on a roof without failing, and to reduce stress on fasteners from the dynamic forces of wind loads.
Flexible as well as durable, slate grey Sika-Trocal Type S membrane was applied to the new building’s three pitched roofs to facilitate a standing seam profile to imitate a traditional standing seam metal roof. In flat roof areas, a light grey membrane was applied.
Danny Murphy, co-owner of Goldcrest Roofing Services commented: “We’ve used the Sika-Trocal Type S system for many years. It can be applied to flat or pitched roofs and be guaranteed a quality performance – it is an extremely adaptable system. The entertainment complex is literally a stone’s throw from the beach so the roofing system applied by us must be able to withstand potentially very strong windloads over a long period of time. The Type S system is more than qualified to cope.”
Due to its quick and easy application, sub-contractors, Goldcrest Roofing Services, were able to install the Type S system within three weeks to the client’s full satisfaction despite work being carried out in winter and the prevalent harsh weather.
The Sika-Trocal Type S system has provided the holiday park with an extension that is in-keeping with the existing building, and one that will ensure holidaymakers can eat, drink and be merry – whatever the weather on the outside – for many seasons to come.
