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Loft Ceilings and Walls

Loft Conversions, Dormer Extensions, Velux Attic Windows

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Walls and Ceilings in Loft Conversions

An unconverted loft usually has minimal wall or ceiling coatings.

The rafters of the roof and basic cladding (sheeting under the tiles) are exposed.

Walls are insulated and finished to a high standard during the conversion from attic to useful living space.

Loft Ceilings

The space between the roof rafters usually becomes the loft ceiling and fulfills many of roles.

  1. Roof ventilation - for loft occupants and roof structure.
  2. Hold electrical wiring and control boxes for lights, heating and windows, and perhaps an extractor fan.
  3. Insulation in loft conversions - we thermally insulate the loft to prevent transfer (loss and gain) of heat to maintain a stable room temperature.
  4. Accommodate electric radiant heat mats or panels.

Roof Ventilation

Window Vent in Velux Skylight
Velux Air Vent

Loft ventilation provides clean air and removes stale and humid air.

Adjustable windows, skylights and ventilators are installed so they provide adequate ventilation and may be opened and closed safely.

Velux windows have an adjustable vent that may be opened partially or fully depending on ventilation requirement. Your choice of window may include type of opening - top, middle and bottom and side versions.

Extractor Fan for additional ventillation
Extractor Fan

Adequate provision prevents excessive condensation in the roof void above the insulation. Through flow of air from 5mm continuous eave vents to 25mm continuous ridge vents eliminates condensation, the cause of rot and decay.

Building regulations provide guidance on ventilation for a healthy living environment.

Electrical Fixings

Stair Light Fitting
Stair light

The loft roof, before any other materials are applied, is where the electrician runs and fixes cables and brackets, so that after plastering the fixture may be assembled without need to disturb the finish.

Loft requires adequate lighting, often ceiling mounted along the ridge, typically recessed halogen and spot lights, and for indirect light along the walls.

Velux electric and automated windows and blinds are installed to a mains power source indicated in loft floor plans.

Additional features include a mains operated smoke detector, and perhaps an extractor fan.

Loft Insulation

Insulation boards with foil backing are installed between rafters.

The foil reflects heat from within the loft and from outside because roof tiles may be heated by the sun.

High quality Kingspan insulation boards prevent thermal transfer, keeping the room temperature stable in hot and cold weather.

Depending on building regulation requirements, we precision install 200mm Kingspan (or similar brand) foil backed rigid insulation between rafters and along ceiling ridges, and an additional 25mm bridging layer of foil backed rigid over the rafters and insulation for maximum thermal insulation within the loft.

Radiant Heat Mats and Panels

Radiant heating system

Radiant heating systems are generally installed underfloor as electric or water based systems.

Electricity powered radiant heaters produce heat using electric elements. These systems are very controllable, economic and space-saving, and they produce a comfortable warmth when installed within loft ceilings and walls.

Water based systems are generally installed as part of underfloor heating systems. Heat sources can include gas or ground sourced heat.

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