INTRODUCING THE REVOLUTIONARY ADDROOM®

28mm Double Glazing

Our Addroom® Garden Rooms have 28mm double glazing in all of the windows and doors. These double glazed sealed units are made using 4mm panes of glass with a 20mm aluminium spacer bar in between to absorb any moisture. This is designed to prevent condensation within the unit, and has been independently tested to ensure this. These sealed units also comply to BS EN 1279 standards, which covers requirements for thermal and sound insulation.

Industry Leading Window and Door Locking

Whatever you choose to use your garden room for, security is important to keep all your treasured belongings and valuable items safe. This is why we include PVCu French doors with an industry-leading 12-point locking system, as well as multi-point locking windows with key locking handles.

Our 12-point locking system consists of four shoot bolts, three espagnolettes, three hook bolts, a locking latch and a 6-pin euro cylinder. Our window locking system consists of mushroom-headed espagnolettes which move in opposite directions into metal keeps.

Easy to Build Panel System

Get your Addroom® installed quickly and easily thanks to the full panels provided. There is no need to waste time building up walls or fixing doors together.

Pressure Treated Floor Bearers

Addroom® Garden Room comes with pressure treated floor bearers included as part of the standard kit. This is highly important in helping to maintain a solid foundation for your building, as this is the part in contact with the cold damp ground. Beware of companies that leave the timber untreated, or don’t even supply floor bearers at all for the building to sit on.
Pressure treatment is a costly and time consuming process, but is highly effective in protecting the timber. During the process, wood preservative is forced deep into the timber as moisture is removed. This fully protects the wood, making it much more effective than dip treatment which only coats the exterior surface. All of our pressure treated timber comes with a genuine 10 year guarantee against rot and insect infestation. However, we do recommend you apply a good quality water repellent to the timber to help prolong its life.

Wide Opening French Doors

The wide opening PVCu French doors offer a large walkthrough width, providing easy access for moving items in and out of your garden room. They also allow you to make the most of the fresh outdoor air and natural sunlight.

Low Maintenance Composite Exterior

Possessing all the benefits of plastic and timber combined, composite is ideal for use on outdoor buildings. It is hard-wearing, resistant to water and requires very little maintenance. The durable exterior walls enable you to match your garden room to your house. The traditional white walls will give an attractive finish to your garden room that will blend beautifully with your home. Meanwhile, the grey effect finish will give your garden room a more contemporary feel for a modern look.

Fully Insulated with Insulated Sandwich Panels

Insulation is important in helping to maintain the temperature inside your garden room, so you can maximise its use all throughout the year. It will help to retain any generated heat inside to keep you warm during the colder months. It will also help to keep the building cool inside during hot summer days. This means you will have a comfortable living space no matter what time of year it is.

All Addroom® Garden Rooms come with fully insulated sandwich panels making up the walls, roof and floor of the building, providing thermal efficiency and durability. The 140mm thick walls have a 70mm cavity to increase airflow and ventilation, with two skins of 25mm thick insulation, a long lasting composite exterior, and fire rated interior cladding. The 120mm bolted wall connections create strong walls you can trust. The 40mm floor is made with 25mm thick insulation between moisture resistant layers, that all sit on pressure treated bearers for longer lasting foundations. While the 140mm roof features a 120mm thick insulated core between moisture resistant layers, and timber rafters for stability.

Fire Resistant Inner Wall

The inner walls of our garden rooms are made using a fire resistant fibreboard for increased protection. This is a hard-wearing material made from recycled paper fibres and Gypsum (Hydrous Calcium Sulphate). The fibreboard is supplied unpainted so you can design and decorate the interior of your garden room to your own individual style. This material is a good surface for paint and is easy to wallpaper.

Insulated Sandwich Roof Panels

A modern roofing solution designed to deliver superior thermal insulation, structural strength, and enhanced weather protection for your Addroom conservatory alternative.

The core of the roof panel is made from 120mm thick thermally efficient insulation, helping to significantly reduce energy costs by minimising heat transfer. By improving thermal efficiency, these panels help to reduce the energy consumption of your Addroom and lower its environmental impact.

These insulated panels can also provide some soundproofing benefits, helping to block out external noise such as traffic, neighbours, or environmental sounds. This helps to create a quieter and more focused environment, ideal for working or relaxing.

Integrated Skylight Roof Panels

Our Addroom® Garden Rooms come with an integrated Skylight roof option that allows natural overhead light creating a welcoming and open feel throughout the day.

Whether you’re using the Addroom® home extension as a home office, gym, lounge, or dining area, the overhead helps make the room feel more open and comfortable while strengthening the connection between your indoor space and the surrounding garden.

The Skylight roof is designed to complement the Addroom’s contemporary aesthetic, offering a clean, streamlined appearance while remaining durable, practical, and low-maintenance.

Each skylight measures 480mm (W) x 1590mm (H) x 31mm (D) and is manufactured using a sealed unit of toughened and laminated float glass. This combination provides enhanced strength and safety for overhead glazing applications, while the laminated inner pane incorporates a protective interlayer for added durability and peace of mind.

If preferred, the skylights can be removed and replaced with a solid insulated roof panel in the roof options in our optional extras in the product’s customisation section.