The new generation of Monarflex Breather membranes
The latest version of coated breathable membranes from Monarflex sets new standards in durability utilizing the latest polymer technology to make breathable pitched roofing underlays and wind and rain barriers for walls. The new generation of Monarflex breather membranes continues to use the well-known Monarperm brand name. The Monarperm TP breather membranes are:
UV, heat, oil and bitumen-resistant. The coated monolithic film technology is vapour open, yet watertight, which in turn helps limit the effects of condensation and moisture built-up in the building envelop of a building.
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Why Monarflex developed Monarperm TP membranes?
Diffusion functionality of membrane
The new Monarperm TP breather membrane production
Monarperm TP product range
Monarperm TP Features and benefits
Comparison between breathers
Application of Monarperm TP membranes
Vapour permeable membranes or breather membranes as they are called play an important role in protecting a modern building with the increased demands to building being more sustainable. The demands to higher level of insulation leaves little space for anything but insulation meaning the gap between the roofing underlay and the insulation in a warm roof construction is more critical than ever. The increased demand to upgrade buildings and especially roofs to a more energy correct way have meant that the overall cost of a roof has gone up and hence why the breathable underlay should and must perform for many years as any failure would be costly to put right.
With this in mind Monarflex decided to develop a new standard for quality solution which provides long-term building protection. The conventional breather membranes on the market, also known as microporous membranes have been on the market for many years now and although the product technology possess several advantages there are also drawbacks, mainly on water tightness during long time ageing exposure to the elements, and harsh climatic conditions and chemical resistance from alkaline which can come from concrete tiles if installed under this kind of roof covering material.
Monarflex have utilized its vast knowledge in developing this new kind of coated breather membranes. Now after years of research and testing the new developed products fulfill all requirements for pitched roofing membranes and have better characteristic than conventional breather membranes.
The Monarperm TP membranes gets its “breathable” functionality from its special TPEE coated film that works by an absorption – diffusion – release model. This means that when water molecules in gas form, also known as water vapour are absorbed by the amorphous TPEE layer they pass through the layer via a polar soft-block phase and therefore no physical perforation* in the structure is needed as known from the standard micorporous films. Once the absorption of water vapour molecules has been achieved, the diffusion through the film begins, and finally the release of water vapour from the film surface occurs.
*)Microporous films are perforated in its internal structure by small calcium carbonate stone fragments that give it’s the porous structure.
The new Monarperm TP breather membrane production
The Monarperm TP breather membranes are made from a special co-polymer called TPEE (Thermo plastic Polyester Elastomer). This mean it’s a monolithic film that are created using co-extrusion coating technology. The TPEE polymer is extruded onto or in-between two layers of nonwoven or polyester fleece with or without a reinforcing grid for extra strength to form a strong and durable membrane.
The TPEE polymer is ideal for products requiring excellent flex fatigue and broad use temperature like in pitched roofing underlay. It is strongly resistant to tearing, flex-cut growth, creep and abrasion. Its mechanical properties provide the strength and stiffness you need, in addition to outstanding toughness. Its chemical properties make it highly resistant to hydrocarbons and many other fluids.
The Monarperm TP breather membranes are made from a special co-polymer called TPEE (Thermo plastic Polyester Elastomer). This mean it’s a monolithic film that are created using co-extrusion coating technology. The TPEE polymer is extruded onto or in-between two layers of nonwoven or polyester fleece with or without a reinforcing grid for extra strength to form a strong and durable membrane.
The TPEE polymer is ideal for products requiring excellent flex fatigue and broad use temperature like in pitched roofing underlay. It is strongly resistant to tearing, flex-cut growth, creep and abrasion. Its mechanical properties provide the strength and stiffness you need, in addition to outstanding toughness. Its chemical properties make it highly resistant to hydrocarbons and many other fluids.
Wall membranes – 2 layers products
- MONARPERM TP 110
- MONARPERM TP 160
Roofing underlay – 3 layer products
- MONARPERM TP 100
- MONARPERM TP 140
- MONARPERM TP 340
Roofing underlay – 4 layer product with PET reinforcement grid
Roofing underlay – 3 layer weldable product - high quality membrane with the possibility of use also on roofs with low slope
The membranes tested in certified laboratory and fulfil all the requirement of the following standards.
EN 13859-1. 1 Flexible sheets for waterproofing. Definitions and characteristics of underlays. Underlays for discontinuous roofing.
EN 13859-2. Flexible sheets for waterproofing. Definitions and characteristics of underlays.
Underlay for walls
- breathable - insulation saved from harmful condensation
- water tight - insulation saved from climate condition
- very good UV stability - sun light does not destroy the membrane, 6 months
- very good ageing behaviour - the membrane has long lasting life, this material was tested for longest possible period of time in a special laboratory tool for ageing behavior and pass it with great condition
- oil resistance – the craftsman can use chain saw, no risk for damages
- wood preservation resistance - wood preservation does not make damage on this membrane
- resin resistance – don not have to be worry of the wood
- compatibility with bitumen - can be connected to bitumen membranes at wall construction
- 100% air tightness - the energy loss is very low through the membrane – no air flow
- high flexibility at low temperature - can be work with this membrane on very low temperature, - 40 C°
- high mechanical properties with polyester reinforcement grid - the reinforced products has low weight but high mechanical properties
- weldable – it is welded by hot air and do not need overlap tape
Comparison between the NEW generation breather and Conventional breather
The Application of Monarperm TP membranes
The new generation of Monarflex breathable underlays that can be installed over rafters, on hard boards, in ventilated or not ventilated roof constructions, or as underlay for walls.
The Monarperm TP product can be installed under virtually any pitched roof covering like slate, concrete tiles, clay tiles or steel tiles provided it’s installed with tile battens and the recommended drape of 10-15 mm between rafters or taut between rafters when installed with counter battens. The minimum roof pitch and overlaps should follow the general application rules as for all Monarflex pitched roofing underlays as per below tables:
50mm (dressed up the board)
Lap dimensions membrane
| Roof Pitch |
Horizontal Lap |
Vertical Lap* |
|
Partially Supported |
Fully Supported |
|
| 12.5° - 14° |
225mm |
150mm |
100mm |
| 15° - 34° |
150mm |
100mm |
100mm |
| >34° |
100mm |
75mm |
100mm |
* form vertical laps over rafters
| Membrane and minimum detail laps |
|
| Verge |
50mm (dressed up the board) |
| Hips |
150mm (separate detailing on hips needs to be followed) |
| Ridge |
150mm (from each slop) |
| Valleys |
300mm (separate detailing on valleys needs to be followed) |
| Eaves |
50mm (overlap with the eaves guard) |
| Abutments |
50mm (dressed up the wall) |
