Roof Windows & Sun Tunnels

Did you know that Velux is the new on-trend solution to getting more natural light in your home?

You know that old joke about lying down, staring up at the stars, and then you wonder to yourself: “Where the hell is my roof?” Well, the creator clearly never had a roof window! Velux is the answer to wanting to stargaze from the comfort of your own bed. Or, more likely, Velux is the answer to adding tons of natural light to your space through beautiful roof windows, and even sun tunnels.

Does exactly what it says on the tin – it’s a window in your roof. They can be installed to flat or pitched roofs, slate or tiled. There are models that open, and ones that don’t. They come in a variety of sizes and are great for single story extensions, bungalows and loft conversions.

A sun tunnel is not so self explanatory, but it is also a nice way to get lots of natural light into your space. Where a roof window is just a straight forward window in the roof; a sun tunnel has an opening that goes in your roof paired with a column of reflective material that traverses the roof space to your ceiling, then an opening in the ceiling as well. They work well with multiple story houses, or if you have a roof space that you generally use as a loft – full of insulation and boxes of old Christmas decorations. 

Have you got any examples?

Here, have a quick look.

How do you install it?

We thinks it’s probably best if we give you an example. In this house, the customer had a suspended flat ceiling inside their extension, which had a pitched roof. We removed the ceiling, made sure the insulation was all up to scratch, and put the windows into gaps that we specifically made for them to go in. The result is this amazing kitchen which is all airy and bright. 

Will you come and install one?

Get in touch using the contact details below, and #ChoosePrimus to install your roof window or sun tunnel today. 

Cold Roof vs Warm Roof

Is there the telltale sign of damp creeping across your ceiling?

But, what exactly is the difference, and why should you bother getting a warm roof to combat damp?

Well, first of all, damp can be very detrimental to your health. It can give you respiratory issues, or make existing ones worse. It can even affect your immune system, which is bad news for everyone. It also doesn’t look very nice when there’s lots of black spots all around the house. 

Below is a case study of a recent customer who had no end of problems until we changed the roof over from a cold roof system to a warm roof.

The home was covered in spots of mould and damp. They had a flat, cold roof. 


We converted the flat, cold roof into a warm roof adding a slight inversion to prevent water from pooling (another factor to the mould). 

Next up, a little lesson on roof construction.

A cold roof is probably what you currently have in your home – conventionally, it’s how they’ve been built, or the way they have been retrospectively insulated if your home is older than the concept of loft insulation. The roof covering – felt or tiles – is at the top, way up there with the rafters and the batons. Then there’s the open space – space that is generally the same temperature as it is outdoors. Just above your ceiling there are joists, and here’s where that stuff that looks like a blanket gets laid (only, it tends to be itchy, so we don’t recommend using it as an actual blanket). A flat roof is similar, except there’s slightly less open space – not enough to convert.

A warm roof also has the same joists above your ceiling, and the same covering right up on the top. The difference is where the insulation is – it’s up there in the rafters just below your tiles or felt. The space in your roof is within that insulated barrier – meaning the temperature reflects the temperature of your house, rather than what’s outside. A warm roof has the same protection against damp as the rest of your house, as your heating keeps the moisture at bay.

For advice on if a warm roof would be right for you, please do get in touch to speak to one of our team. 

And, if you’d like a new roof; whether you need warm or cold, whether you’ve got a pitch you want making flat, or a flat roof you’d like adapting to a pitched, #ChoosePrimus. 

Next week, I’ll be giving you a little intro in Velux roof windows (skylights) and sun tunnels, the gorgeous trend that gives you plenty of natural light. 


From a lick of paint or a kitchen worktop refitting, or wall removal to open up your space into something completely new, the Primus building team can help you out. Give us a call on (01695) 737328, email or fill in the contact form on the right to arrange a free quote for the works you need.

Continue reading “Construction”


A gallery of roof works completed by the team at Primus. If you have any roof works you require doing, from a small repair or replacement of slates to an entire new roof, do not hesitate to get in touch and we’ll look to quote for your works. You can call (01695) 737328, email or fill in the contact form on the right!





Roof Reinstallation – Start to Finish

Roof Replacement in Liverpool – Start to Finish

Flat Roof Repair in Liverpool – Start to Finish

Conversion to Pitched Roof – Start to Finish

Roof including Velux Roof Windows – Part of a larger project – Start to Finish


In June and July of 2014, Primus Energy donated services of the labour of three men for several days to DIY SOS in Wigan. Working alongside Nick and the team, and Lawrence Llewlyn-Bowen, Primus Energy helped Mark – a young man who was assaulted and left having to live in care homes – come home to his family. Caroline did a full write up of the teary-eyed evening she spent watching the episode on the TV in the summer of 2015.

Continue reading “DIY SOS”

Do you know where to put your CO alarm?

So you’ve been down to your local DIY store and splashed out to keep you and your family safe. Your new CO alarm is sat in its packaging, with the fixings ready, waiting to be put up. It’s an audible one, so it’ll wake you up if there is a CO escape at night. It complies with British Standard EN 50291 and carries either a British or European approval mark such as the Kitemark. The battery will last for the lifetime of the alarm – 7 to 10 years depending on make and model – or it will let you know if you have to change the battery. You’ve got one for every fuel burning appliance in your property, and extra ones for your bedrooms, ready to put up. But, where exactly?

Continue reading “Do you know where to put your CO alarm?”

What’s generating YOUR electricity?

We know that energy can’t be created or destroyed, and that in order to provide you with electricity in your home the suppliers must get it from their own wholesale supplier. In general, a lot of fuels are burned, the heat is produced to make steam, which then powers a generator. In the case of wind, the movement itself is the generator. For solar, it’s a converter from the light energy that’s hitting the panels. Nuclear is a complicated system of atoms breaking down, but in the end it produces heat to make steam for generators as well. But in what mix does your supplier get it’s energy? We found out for you!

The UK Average

Coal Natural Gas Nuclear Renewables Other Fuels
34% 25.6% 21.6% 16.7% 2.1%


The Big Six

Coal Natural Gas Nuclear Renewables Other Fuels
British Gas 22% 31% 31% 15% 3%
e.on 46.7% 27.1% 8.4% 12% 5.8%
EDF 26.8% 3.5% 56.1% 13.5% 0.1%
npower 31% 50% 2% 16% 2%
Scottish Power 48.6% 32.6% 1.1% 16.9% 0.8%
SSE 44% 28% 2% 24% 2%



Coal Natural Gas Nuclear Renewables Other Fuels
Co-operative 17% 9.8% 3.1% 68% 2.1%
Ecotricity 7.2% 4.1% 1.3% 86.5% 0.9%
First:Utility 46.8% 27.1% 8.4% 11.9% 5.8%
Flow Energy 46.8% 27.1% 8.4% 11.9% 5.8%
Good Energy 0% 0% 0% 100% 0%
Green Energy 0% 45% 0% 55% 0%
Green Star Energy 3% 2% 0% 95% 0%
isupplyenergy 46.8% 27.1% 8.4% 11.9% 5.8%
LoCO2 Energy 0% 60% 0% 40% 0%
Ovo Energy 39.3% 22.7% 7% 26.1% 4.9%
Spark Energy 46.8% 27.1% 8.4% 11.9% 5.8%
Utilita 47.% 27% 8% 12% 6%


So, if you’re environmentally conscious, it might be worth looking at what your supplier is using for its electricity generation. If you’re opposed to coal-fired plants, there are options for you with little or no electricity coming from coal. If you’re not happy with nuclear, there are suppliers to go with, and suppliers to definitely avoid. To prioritise renewables, the answer is clear.

Who’s your supplier? Are you planning on switching?

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Figures Accurate Summer 2015