When is Rewiring Necessary?
If a property has not already been rewired within the last 25-30 years, the chances are it will need upgrading at least in part in order to bring it up to current standards. The wiring may be potentially dangerous and may not be able to cope with the demands of modern living.
If you plan major remodeling work that constitutes a material alteration as defined by the Building Regulations, it is likely that you will need to rewire part, if not all, of the property, including upgrading the consumer unit (fuse box).
If you are extending your home, or converting an attic or garage, this will constitute new work and therefore all of the new wiring will have to conform to Part P: Electrical Safety, and all existing wiring will have to be improved to ensure that it is able to carry the additional loads safely, it is earthed to current requirements and that cross bonding is satisfactory.
Where you are extending or remodeling, the rest of the existing wiring does not have to be upgraded, except where upgrading is required by the energy efficiency requirements of the Building Regulations, i.e. central heating controls.
Which method of Installation?
If you identify that your home electrical system needs upgrading, then you have two options, this choice needs a lot of consideration because the financial and practical implications are great.
Surface-mounted wiring is achieved when you use hollow channel (often called trunking or conduit) to extend the circuit. By simply adding a surface-mounted extension box, add a piece of trunking, and add a box to the new location. Obviously, to complete a full rewire of a domestic property, we would still need to lift floorboards and access the loft to run cables. We can usually complete this type of rewire to an average-sized three-bedroom house in one day.
The downfall of this installation is that it is visible, but with the addition of paint, you can make the trunking and boxes blend into their surroundings. All in all, this makes a quicker install and less noise and dust is produced and less disruption to the property.
This should be the option to homeowners that are not in a position to make good the channel cuts into a fully chased rewire of a property. To surface mount rewire an averaged sized three-bedroom house would cost on average £2,500 - £3000.
Fully chased Installation
In this type of installation, 30mm channels are cut into the existing walls wherever a switch or outlet is required. The cables are covered by protective capping (to prevent degradation of the cables PVC coating from the gypsum plaster coating) and then buried in the wall.
We use the most up to date dust management systems, yet it is inevitable that there is going to be dust and small rubble produced as a by-product to this system. It would be disingenuous for anyone to claim this is anything but a very messy installation method.
We can arrange for a steel container to be hired, so that much of your belongings can be stored away from the dusty cutting work and all the large items can be stored in the middle of the room covered by dust sheets.
Floorboards will need to be lifted on the first floor and the attic space will need to be accessed for the running of cables.
This type of installation can have its limitations in an environment with a kitchen that is in situ. We would be unable to route cables behind your wall tiles and kitchen cupboards. In this situation, we would need to surface mount the cables and outlets. (please see above surface mount installation)
Fully chased rewiring of a property is especially suited to homes that are unoccupied or have limited furnishings. If you intend to purchase a property and a survey has highlighted that a rewire is suggested, then liaise with us so that we can arrange to perform the works before the majority of belongings are moved in.
To fully chase rewire an averaged sized three-bedroom house would cost on average £3,500 - £4000.