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Solar Panel Installation

Solar Panel Installation Process – a step by step guide.

Typical time scale – 2 days.

How long does it take to install solar panels? Installation takes about 2 days to carefully complete to a high standard, see below. (132 H1)
Solar Panel Installation Process – a step by step guide.
Typical time scale – 2 days.

How do solar panels fit to the roof? It is not at all disruptive since most of the work is done on the outside of the building and in the loft or garage (where the inverter is usually located). Only one 4mm cable needs to come into the living area of the house where it is connected to the generation meter and consumer unit. This step by step guide will show you how it’s done. You will note that there is no penetration of the roof which should be as sound (or better!) than it was before.

1. How are solar panels fixed? After careful measuring out and marking, tiles are removed and mounting brackets are attached to the rafters. The tiles are then put back sometime after grinding of the undersides to enable a flush fit.  Any damaged tiles are re-placed with new.


2. Rails are bolted to the brackets to support the panels. These must extend slightly beyond the panels to allow for contraction.

roof 1

3. Panels are attached to the rails using specially designed clips which bolt onto the edges. These enable the panels to be removed quickly and easily for roof maintenance when necessary. Electrical cables behind each panel are connected to the adjoining panel to form a “string”.

roof 2

roof 2a

4. The cable is fed under a tile and into the roof void where it is connected to the inverter.

roof 3

5. Roof installation is complete. Notice that there must be a margin (minimum200mm) between the edge of the panels and the edge of the roof.

roof 4

6. The cables from the two strings are then connected to two DC isolaters which are then connected to the inverter. The AC output from the inverter is then fed into an AC isolator (the red switch) from where it is taken down to the consumer unit and generation meter. It is not necessary to access the inverter after installation except for maintenance and data from the inverter can be transmitted to a computer or a dedicated display device.

roof 5