ROOF SYSTEMS

A roof does more than just provide a protective covering over your head. It determines the interior climate levels of your living/work space through heat transfer, and contributes to a dry, healthy and comfortable indoor environment. If you find that your living environment gets too cold in winter and too hot in summer, or your roof ridge constantly requires maintenance, Monier Coverland have the solution for you. Our weatherproof roof systems support a healthy and comfortable indoor climate that goes hand in hand with cost saving and environmental consciousness.

Heat transfer through the roof

Winter and Summer

The largest heat loss across an un-insulated air-filled space (a building without insulation under the roof covering) is natural convection, for example, air conditioners, heaters, convection ovens. While you try to maintain a temperate indoor climate in winter, you also hike up your electricity bill (not to mention increase your carbon footprint). Interior climate control - heating, ventilating, and air conditioning - is one of the largest energy consumers throughout the world today.

The largest share of heat transmitted within a building is radiant heat, transferred in a downward flow from the roof. Your roof may have traditional bulk insulation to keep heat inside the home, ideal in winter. This is achieved by trapping air to eliminate significant convective heat loss through the roof. The multiple surfaces of bulk insulation only minimise the radiant heat of the sun entering the interior. The result is that the comfortable interior temperature is not maintained in the hot summer months.

Climate and cost control

The Coverland Cool Roof System is a self-sustaining system that offers a solution to reduce the flow of heat transfer by optimising the roof's thermal performance with a combination of heat reflection, ventilation and insulation products to minimise the radiant heat and reduce the heat transmitted into the roof. The result is a cool interior in summer and a cosy interior in winter. In turn, a household uses less heating and cooling equipment. Read More

Leaks from problematic Ridge and Hip-lines

Mortar is habitually used throughout South Africa to secure ridge and hip-lines. The initial setup cost of mortar application is considered the driving factor, but there are attributes to be aware of before you use this method of ridging. One of the most common flaws found with mortar ridges is poorly installed ridge tiles with cracked or missing mortar, resulting in roof leaks. When this happens, the ridge is untidily waterproofed with an acrylic membrane (often called "lap en plak"). Because of our harsh South African sun, the acrylic waterproofing and re-coating maintenance is required at least every two years. The result is a permanently unsightly repair to a neatly tiled roof as well as time and cost drawbacks.

Dry-fix, leak-proof application

If you are renovating or building, consider the alternative to mortar. The Coverland Dry Ridge System offers a leak-proof, maintenance-free solution for your roof ridge and hip-lines. It comprises of the ridge tree which aligns the topmost ridge or hip batten, an easy to install dry-fix ridge roll that is secured onto the batten and ridge/hip clips to secure the ridge tile fittings. The application is also time efficient and less labour intensive -an estimated 2.5 hours to fix a 10m dry ridge roof compared to 6 hours for a 10m mortar application. The result is a storm-proof and maintenance-free ridge and hip-line giving your roof a superior aesthetic finish. Read More

Ventilation through the roof

Optimum ventilation

It is estimated that one person produces three to four litres of water vapour a day by using household appliances such as dishwashers and tumble dryers or by cooking and showering. The vapour rises to the top of the building, and condensation forms in the roof construction affecting indoor climate and the roof structure (damp, mould etc.). According to the World Health Organisation, the prevalence of damp and mould increases inhabitant's susceptibility to asthma and allergies. Coverland provide a solution offering roof components that ventilate and remove the moisture through the airflow.

The Coverland Ventilated Dry Ridge System replaces mortar bedding with a breathable ridge roll - Compact Roll allows the air to circulate from the eave via the underlay to the roof ridge and away from the wooden roof structure. The result is a healthier indoor environment because the humidity and stagnant air escapes and the roof construction can dry out preventing mould and dry rotting. It is a secure weatherproof system that allows optimum ventilation for a healthier indoor climate. It also has the added advantage of an aesthetically pleasing ridge line, free from messy mortar that cracks and causes leaks.

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