Roof ventilation - the truth
09-Jul-04
The increase in the number of reported cases of roof timber rot and mould is attributed to the failure of contractors to properly ventilate cold and warm pitched roofs according to British Regulations Part L and F, Good Building Guides 37 and 51, and BS ... Topic.
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Not all breathers are the same – vapour permeable underlays
09-Jul-04
The characteristics of vapour permeable underlays for both ventilated and non-ventilated pitched roofs vary according to manufacturer, and this must be taken into account when the roof is designed and constructed. Topic.
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Setting standard for breathable underlays
09-Jul-04
The three-layer microporous roofing underlay with high UV resistance developed by Web Dynamics is described. Topic.
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Airing the problem
21-May-04
An increasing number of condensation problems in house roofs caused by poor roof ventilation are being observed. Topic.
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Steamed up over roof space ventilation
07-May-04
Condensation problems may occur in unventilated roofs which rely upon vapour permeable underlays ( membranes ) for condensation control, particularly during sudden cold spells and the drying out phase of a new building. Technical Brief.
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Non ventilated roof insulation solution using Alreflex
02-Apr-04
The non ventilated Alreflex 2L2 Super-R roofing system from Thermal Economics. Product.
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Roof ventilation will not help Part L
26-Mar-04
Conventional methods of roof ventilation are not compatible with the new Building Regulations Part L, which encourages airtight systems. Topic.
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Dow unveils VERSIFY Plastomers and Elastomers – perfect for roofing membranes
27-Feb-04
Revolutionary catalyst technology is at the heart of VERSIFY Plastomers and Elastomers, a new range of specialty propylene-ethylene copolymers from Dow. Product.
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Lined, sealed and delivered
27-Feb-04
The control of condensation in roof spaces whilst achieving the Building Regulations requirement for a U-value of 0.16 W/sq m/K is discussed. Topic.
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Risks of roof ventilation
27-Feb-04
Incorrectly designed, constructed and maintained ventilated roofs may fail prematurely by moisture-induced rotting, whereas non-ventilated roof systems with a breathable membrane require no maintenance and will function correctly ... Topic.
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