Rewires

Overview

If your current electrical installation requires re-wiring (either to add capacity, or because defects have been reported following an inspection), you have two options:

  • 'Chased in' (cables running behind the plaster/walls)
  • 'Surface mounted' (cables running in trunking, commonly above the skirting boards)

There are pros and cons to both approaches, and we would be happy to discuss them with you, to help you identify the approach that best suits your needs.

Details

Under normal operating conditions, a well designed electrical installation with PVC insulated cables should operate safely and consistently for 25 years or perhaps more. Over time however the current flowing through the cables deteriorates the PVC insulation - the more current drawn, the hotter the cables get - and so the deterioration is accelerated, and the lifespan of circuits that have been modified, extended or overloaded will be seriously reduced.

Because of this, and combined with the fact the regulations change over time, it is recommended that electrical installations in domestic dwellings are periodically inspected every five years or change of occupancy, which ever is sooner. Due to regulations changing, and damage caused to accessories, fittings or equipment due to natural wear and tear, often remedial work is required after these reports, but do not require rewiring. Older installations may have cables without an earth to lighting, or maybe be of rubber, lead or aluminium construction, whilst there is often a short term solution to make the installation comply with current regulations it often becomes more cost effective and a better all round solution to either rewire or partially rewire a property.

This is a highly disruptive process, with a lot of noise, dust and upheaval as possessions are moved about, floors lifted and walls drilled. There are two different methods to rewiring a property, both with their own advantages and disadvantages, these are:

  • chased in so that only accessory fronts are visible
  • surface wired where a containment system (normally PVC trunking or conduit) and accessories are installed directly onto walls.

The disruption can be reduced by installing the cables and accessories on the surface in PVC trunking, it often removes the need to redecorate and there is significantly less dust. The trunking can be painted or wall papered at a later date and blends into the room becoming less obtrusive. This method isnít for everyone, and often it is preferred that cables are chased into the walls and replastered. This method is much slower, more costly and requires redecoration throughout upon completion.

If you are in a position where circuits are required to be rewired we are able to offer best advice specific to your needs and budget.