Keeping Your Granny Annexes Cool

The UK is set for some more unseasonably warm weather in the coming weeks, and last summer was a record breaker when it came to summer temperatures. The general opinion is that our summers are now getting hotter and longer. So, with roasting days and balmy evenings, how do our granny annexes feel when it comes to warmer weather and how can you help keep the temperature cool in your annexe?

Keeping Your Granny Annexes Cool in Summer

Last summer was a record breaker and homeowners across the country struggled to keep indoor temperatures cool, or even comfortable.

As an annexe owner or if you are looking to build a granny annexe, you might have worries about the building feeling too warm and how you can keep it feeling cool in the summer. However, there is no need to worry as our core range has many standard features to help keep your annexe cool and there are things you can do yourself to help with summer temperatures.

Cool Annexes From iHUS

Our annexes are designed to be comfortable in all seasons; cosy in winter and cool in summer starting with the construction of the building. Each annexe is fully insulated which means that they are great at retaining heat in the winter but are also good at stopping the temperature rising too much in the summer. The idea is to keep a consistent, comfortable temperature, year-round.

Our annexes are also clad in weatherboard which works as another layer of insulation – helping reflect the heat from the sun in summer months.

image shows a granny annexe in the sun


Windows are an important aspect of each of our annexes too.  Yes, these do allow light in which also means heat, but quality, easy to use UPV means that opening and closing windows is easy and keeping your annexe well ventilated is a doddle. Even our standard range comes with French doors – what could be cooler than opening the doors and enjoying reading in the cool shade of your annexe with a gentle breeze blowing through.

Ventilation is important when it comes to regulating temperature and all of our annexes are equipped to correctly so that the building can ‘breathe, and the air never becomes stale.

If you love to spend time outside in the summer, we can also add outdoor spaces to your annexe – a composite veranda or patio would be the perfect place to sit under an umbrella keeping cool in the summer.

Tips for Keeping Your Annexe Cool

Of course, with the summers we have been having in the UK it would be impossible to prevent temperatures rising at all indoors but there are things you can do yourself in your annexe to help stay cool and comfortable.

  1. Install blinds – vertical or Venetian blinds are excellent at keeping living spaces cool. To maximise their use, keep them closed during the day when the weather is very hot. This will help stop the sun shining through windows and creating hot spots.
  2. Install air conditioning – once seen as unnecessary in the UK, air con is now becoming more common in domestic properties. Our annexes are connected to the mains electricity so its entirely possible to install air condition in your annexe.
  3. Use a fan – electric fans are a good way of providing localised cool air in your annexe. when you are in bed for example or cooing in the kitchen.
  4. Turn off unused electrical appliances – you wouldn’t think this makes a difference, but in a smaller space, running appliances that generate heat can bring the room temperature up. If you are using the television switch it off at the plug socket.
  5. Finally, try to focus on keeping yourself cool, rather than your home. This is especially important for older people who are prone to heat exhaustion. Wear cool, light clothing on hot days and ensure that you drink enough cool drinks to maintain even body temperature.


Contact iHUS Granny Annexes

Want more information on how comfortable our granny annexes are? Get in touch to chat with one of our advisors who will be happy to answer any questions you may have.


Find out more...

Check out our planning permission or your money-back pledge
Built to the highest quality with a huge range of options
Book your viewing of an iHus near you

Send for your free iHus granny annexe brochure

Simply add your details below, click send, and we’ll forward your beautiful brochure.

Recent Projects

Williamson bespoke granny annexe

Jenny Williamson

The Williamsons family moved into their Annexe over 3 years ago. When visiting the family they told us life in their new home exceeded their expectations for many reasons. So much so, they wanted a...

Wendy Hamm

In Autumn 2020 Wendy Hamm and her family approached iHus as they were contemplating an annexe build in their back garden to house Wendy’s mother. Wendy’s mother Jane, 82, was living over an hours d...


This idyllic annexe is home to Theresa and Austin situated at the bottom of their daughter and son in law’s garden. Having always lived very closely to one another, the family were convinced this w...


This 1 bedroom bespoke Annexe is home to a family from South Africa, their Annexe has enabled them to live in an area that they love close to their beloved family and grandchildren. Find out how th...

Download our iHus annexe brochure

If you would like to download our annexe brochure, please complete the form below. You can also request for a hard copy to be posted to your home address. Have any further questions, why not request one of our team get in touch?

Talk to an expert

Whether you’re looking to build a garden annexe, or just have a quick question, get in touch with us today and one of our friendly team will get back to you.

Get in touch with iHus

If you want to speak to one of the team about how Multi-Generational Living can be achieved by building an annexe. Complete the form below.

Book your Free Open Hus Visit

If you would like to view an annexe show home, please complete the form below. Have any further questions, why not request one of our team get in touch?

Download our Annexe Financial Guide

If you would like to download our annexe finance guide please complete the form below. Have any further questions, why not request one of our team get in touch?

Download our iHus annexe brochure

If you would like to download our annexe brochure please complete the form below. You call also request for a copy to be posted to your home address. Have any further questions, why not request one of our team get in touch?