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Call The Dormer Doctor on
01 401 9729 for further details |
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Isolair Roof Systems... |
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NBT Pavatex
Pavaroof system uses rigid, waterproof and breathable insulation
boards called Isolair. The boards are tongue
and grooved on all edges, allowing for rapid and simple
installation. This modern
method of construction is time proven, with Pavatex starting
production of boards in 1932. The system is ideal for new build,
refurbishment and use on historic buildings.
Made from waste FSC wood, Pavatex
Isolair boards lock up more carbon than they cost to produce and
are completely non-toxic.
Pavaroof (Isolair and Pavatherm
Plus+) is available for both
pitched roofs (above 10* pitch) and
flat roofs. We supply all
fittings and
accessories for the system.
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Pavaroof Advantages... |
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Pavaroof offers good insulation from
cold. By over-cladding the roof structure, cold bridging is
minimised, further improving insulation performance.
By using a water proof layer (either from Isolair or Pavatherm
Plus+ boards) no membranes are needed, simplifying the build. |
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Pavatex woodfibre boards have a
balance of insulation and thermal mass. This additional mass
means that the increased heat and solar radiation is stored
within the roof structure by day, and released at night. This
'Decrement Delay' can be up to 12 hours, meaning that rooms
under Pavaroof are on average 4 degrees cooler than other
insulation systems. |
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The density and structure of the
boards also offer significant sound-proofing. When combined with
other insulations, a Pavaroof can offer significant reduction in
sound transmission.
This is especially true when compared to very lightweight foam
or multilayer systems, and can be very useful in high density
housing or urban environments. |
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Pavatex woodfibre boards are F90
fire rated, and independently tested by Warrington Fire.
In a fire situation, a layer of ash rapidly forms, inhibiting
oxygen and deep burning, reducing the spread of flame. No toxic
gases are produced by Pavatex.
Compared to mineral fibre insulation, ignition of other layers
is delayed. |
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Like a roof membrane, Pavatex
products are breathable (or 'vapour open'). In conjunction with
other vapour open and hygroscopic insulations, Pavaroof can help
control the relative humidity of a room. This has significant
health benefits, as well as reducing mould and mildew.
This breath-ability also helps protect the roof structure from
decay, drawing away moisture from timbers and actively
transporting it outwards, where it evaporates. |
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Pavatex boards (like any insulation)
can significantly reduce carbon emissions in buildings.
Extremely resistant to ageing, Pavatex are proven to last the
lifespan of a building, unlike many other products.
The boards can be stored outside prior to construction, for 3
months, with no ill effects.
Any waste Pavatex products can be re-cycled, composted or used
thermally for energy generation. |
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The boards are made from natural
waste wood, from sustainable sources. In combination with
efficient manufacturing this means that Pavatex boards are
carbon negative - locking up more carbon than they cost to
produce.
Pavatex boards have no toxins in them, reducing our exposure to
many chemicals found in foam insulations. |
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Latest News... |
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Pitched and Flat roof systems... |
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The advantages of Pavatex products
can be applied to both flat and pitched roofs. For details of
each system, including technical design information,
installation manuals and case studies, follow the appropriate
links below:
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