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ROOFING NORTH WALES

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Serving — Colwyn Bay — Rhyl — Prestatyn

Warm roofs

Adding thermal insulation

Many flat roofs have been constructed with little or no thermal insulation. Not only does this mean a higher heating bill to keep the room(s) warm but also there may be an accumulation of moisture within the roof structure that can lead to rotting of the structural timbers, and even poorer thermal insulation if the insulation becomes wet.

 

The solution is to retain as much of the existing structure as possible (assuming no rot) and add extra insulation, a vapour barrier and a new top weather-proof surface.

 

Wherever warm moist air meets a cold surface condensation can be a problem. If this occurs within the roof space it will cause damage and neutralise the effectiveness of any thermal insulation. See the section on Interstitial condensation.

 

First, the existing waterproof roof surfacing must be removed. This is usually 3-ply felt. Then a vapour barrier of 125 micron polythene is laid to prevent moisture from inside the room entering the thermal insulation. This construction complies with British Standard BS5250:2002 ‘Code of Practice for control of condensation in buildings’. Next, rigid foam thermal insulation panels are laid. Finally the new flat roof surface is fixed in position. This comprises OSB (Oriented Strand Board) - more commonly called 'Sterlingboard'. Finally, the weatherproof top surfacing, which may be EPDM rubber, 3-ply felt or GRP (Glassfibre Reinforced Plastic). See the section on Flat roofs for more information on surfacings.

Sequence of modifying a flat roof to a warm roof

Warm roofs for conservatories

Conservatory warm roofs.

We can replace the existing thin plastic roof covering on your conservatory with an attractive and sturdy timber and tile effect lightweight roof structure.

We incorporate 'Kingspan' thermal insulation panels so that your conservatory has a similar level of insulation as the rest of your house.

This means you now have a room that can be used all the year round and, in winter, is economical to heat.

Installation of a thermally insulated replacement lightweight pitched roofs on conservatories

Installation of warm pitched roof on conservatory. Installation of warm pitched roof on conservatory. Installation of warm pitched roof on conservatory. Installation of warm pitched roof on conservatory. Installation of warm pitched roof on conservatory. Installation of warm pitched roof on conservatory. Installation of warm pitched roof on conservatory. Installation of warm pitched roof on conservatory.
Conservatory new thermal insulation. Conservatory new thermal insulation. Conservatory new thermal insulation. Conservatory new thermal insulation. Conservatory new thermal insulation. Conservatory new thermal insulation. Conservatory new thermal insulation. Conservatory new thermal insulation.
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