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Roofing membrane installation requires specialised knowledge and techniques. Dwellsmiths have the expertise to identify and install the ideal roofing membrane system to suit your home or business.
The appropriate membrane solution for your roof depends on your roofing structure and requirements. We complete a thorough assessment and inspection before recommending the best membrane solution for your roof.
Our team have experience working with many types of membrane options and have the expertise to advise and install the ideal solution for your home or commercial property.
MEMBRANE ROOFING
Conventional Uninsulated
Roof membrane is installed directly to the deck (usually wood or concrete), and is exposed to the weather. There is no insulation directly below the membrane. In a wood deck of this type the insulation, if used, is typically installed in the supporting joist space, which must be cross-vented.
Conventional Insulated
Roof membrane is installed directly over insulating materials, which are installed on the deck (wood, concrete or steel). The membrane is exposed to the weather.
Protected (or Inverted) Membrane
Roof membrane is installed directly to the deck (wood, concrete or overlaid steel). Extruded polystyrene is installed over the membrane covered by filter fabric and appropriate ballast. Ballast is required to counteract insulation flotation and wind uplift, and to provide ultraviolet resistance for the insulation. A modified protected membrane includes insulation both above and below the membrane. It is often used to provide slope to the membrane in order to improve drainage or to move the dew point away from the membrane.
MEMBRANE TYPES (Most common)
Modified Bitumen
Generic description for pre-manufactured sheet membranes consisting of asphalt, modified with a polymer, which improves the physical properties of the asphalt and coated on a reinforcing mat or carrier. Different polymers offer different physical properties. Sheets may be installed either in hot asphalt or by heating with a propane torch, and in some cases they may be self-adhesive. Applications normally consist of 2 plies but may be a single ply in certain well sloped applications.
EPDM (Ethylene Propylene Diene Monomer)
A generic description for synthetic rubber sheet membranes. Applied only in single-ply applications on all roof types. Seams are accomplished with proprietary adhesives.
PVC (Polyvinyl Chloride and TPO (Thermoplastic polyolefin)
Generic descriptions for a plastic sheet membrane. Applied in single-ply applications on all roof types. Seams are accomplished by fusion either with solvent or hot-air welding techniques.
Although these are the most commonly used generic flexible membranes, there are other types on the market (each of which, as mentioned, requires special knowledge and techniques).
Membrane Roofing
