Roof Breather Membrane Installation

If condensation is allowed to form within the roofing it isn t long before wood decks become wet and damage sets in.

Roof breather membrane installation.

With a wet verge a verge that use mortar bedding as a fixing the breather roof membrane needs to lap onto the masonry by at least 50mm. You may also need to check the ventilation requirements of the membrane will be met before you begin the installation. At abutments turn the underlay up by at least 100mm. Lay the breather membrane.

A breather membrane is a sheet of material that is installed to the outer side of insulation on both roofs and walls. For optimum performance use cedar breather with rapid ridge 7 ridge vent. It also prevents any form of water whether it is moisture surface water or rainwater from entering the roof or interior space. Step by step to a watertight and functional roof with dupont tyvek installation guidelines.

Tyvek supro is the market leading breather membrane and is a water resistant membrane suitable for all supported and unsupported pitched roof applications in commercial and residential buildings. With dupont tyvek your roof is protected against rain wind. Roofing underlays breather membranes. Breather membranes are installed to the outer side of the insulation and each roll should contain detailed fitting instructions.

Installing breather membrane helps to minimise condensation build up in any type of roofing installation. Some breathable membranes are also approved as being air open as well as vapour permeable. Next lay the breather membrane parallel with the roof eaves normally when installing. It allows water vapour to pass through from the inside of the roof or walls without requiring any ventilation to be installed directly above the insulation layer.

How to install a roof breather membrane eaves support tray. Roof and building membranes. Where a roof includes valleys ensure the breather membrane is extended by a minimum of 300mm on each side measured from the centre of the valley. Firstly it is important to have an eaves support tray or a uv resistant membrane that is fitted.