(Sizes shown are approximate & full sizes are shown in the product Specification)
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The Addroom® 4m x 3m Garden Room is a versatile building, sure to enhance any living space. Expand your home by creating room for a garden office, home gym or play room. It is a much simpler and cheaper alternative for adding extra room than building an extension or conservatory, but just as effective.
Featuring multi-point locking uPVC windows and doors, your treasured belongings will be securely locked away. The double glazing and fully insulated walls, floor, and roof provide great thermal efficiency, enabling you to make good use of your garden room all year round. The exterior wall surface is made from WPC (Wood Polymer Composite), a hard-wearing material that resists water and is easy to maintain. The attractive finish includes brick effect walls and a grey slate tile effect roof.
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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
Pressure Treated 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.
All our Pressure Treated timber is for User Class 3
Tall Walkthrough Height
The tall walkthrough height of 6'0" (1.84m) means you should be able to walk in and out of the doors of your garden room without running the risk of bumping your head.
When comparing the door heights with others be careful of companies that also include the door frame in their measurements to make is sound larger than it really is.
Wide Opening French Doors
Brick Effect Exterior
Possessing all the benefits of plastic and timber combined, WPC (Wood Polymer Composite) is ideal for use on outdoor buildings. It is hard-wearing, resistant to water and requires very little maintenance. The impressive brick effect design on the exterior walls enable you to match your garden room to your house. The traditional red coloured, natural toned brick will give an attractive finish to your garden room that will blend beautifully with your home. Meanwhile, the light grey/beige coloured brick effect will give your garden room a more contemporary feel for a modern look.
Please note that unpainted/untreated areas of WPC may differ slightly in colour due to manufacturing processes.
Fully Insulated with Polyisocyanurate Sandwich Pan
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 fully insulated with polyisocyanurate sandwich panels making up the walls and floor of the building. The roof also comes as an insulated sandwich panel with a high density polyurethane core. The walls have a 70mm cavity to increase airflow and ventilation, with two skins of 25mm thick insulation, while the floor is made with 25mm thick insulation. We use polyisocyanurate insulation as it gives high thermal efficiency, and is known to be far superior to alternative materials used by other companies, such as polystyrene, rockwool or bubble wrap.
High Internal Eaves Height
Spanish Style Insulated Roof Panels
Our Addroom Garden Rooms come with an easy-to-install insulated roof panel that has an attractive grey slate tile effect appearance. This offers the best performance and aesthetic finish, imitating a traditional design that gives your building a modern look.
The 65mm thick insulated sandwich panel provides high levels of thermal efficiency and good sound insulation. It has a polyurethane insulation foam core protected by two sheets of pre-lacquered, galvanised and profiled steel. The upper tiled effect layer is formed by a total of six tiles, not five like others do, as it offers more resistance and insulation capacity. Polyurethane is a high density material with fantastic insulative properties. The lower steel plate is finished in basic white.
The roofing panel boasts a U-value of 0.32 W/m2K. This compares to 2.8-3.0 W/m2K that you might typically see on an old conservatory glass roof where there is air space between the panes of glass.
What’s a U-value?
U-values refer to the rate of thermal transmittance through a material or structure – how good a thermal conductor or insulator it is. U-values are measured by the unit W/m2K. The lower the U-value, the better!
The overlapping joining system gives the roof tight connections that help prevent leaks and humidity, ensuring warmth is kept in and doesn’t escape through the ceiling. The high quality roofing system has been subjected to numerous tests and controls to ensure the effective performance of its qualities and characteristics.
28mm Double Glazing
Fire Resistant Inner Wall
Designed for the DIY Market
What Is An Addroom®?
How Big Is This Addroom®?
How High Is This Addroom®?
Do I need Foundations?
How Much Does An Addroom® Cost?
Do You Install?
How Do I Keep My Addroom® Warm?
How does this attach to my House?
How do I make this watertight?
Does An Addroom® Require Planning Permission?
Do you deliver to Scotland?
Can I install heating?
Does This Product Come With Electrics?
What do I do about an external water tap or gas flue?
Can guttering be added to the Addroom®?
Can I decorate the internal walls of the Addroom®?
My house has airbricks where I want to install my Addroom® , what do I do?
We deliver our products to mainland United Kingdom (England, Wales and most of Scotland). Some exceptions apply; these are illustrated on the map below.
Postcodes affected include:
Green - Free Assisted Delivery
Red - We are unable to deliver to these areas.
Purple - For orders to Ireland & Northern Ireland, please visit our Distributor in Ireland here.
Delivery Service
All of our products are delivered using our own fleet of vehicles, not sub-contractors. We have a large number of vehicles dedicated to delivering our quality products so we can guarantee maximum care is taken during the delivery process.
Our deliveries take place Monday to Friday between the hours of 8:00am and 6:00pm.
When the delivery vehicle is unloaded, it is important that you check to make sure all of the items and instructions have arrived and are correct. You will also receive a component list to check your items against. If anything is missing or damaged, it is essential that you note this on your paper work when you hand it back to the delivery driver.
Prices for our delivery services can be found on individual products.
Please note that goods will be delivered to the first point of contact at the front of your property e.g. on your driveway. This must be within 20m from the delivery vehicle (Safely Parked at Kerbside). Our team will be responsible for assessing the risk of carrying out delivery upon arrival at the property.
Should you require further information on our assisted delivery services, please click here to read our Terms and Conditions, alternatively you can contact a member of our Sales Team.
Q: Where can I find more information?
A: If you have any questions regarding your delivery, you can telephone our Dispatch Team. Contact details for the Dispatch Team of your nearest branch can be found on your order confirmation. If you need to track your delivery or access your manuals in advance of your delivery, you can visit the Customer Log In Area of our website https://dunsterhouse.co.uk/customer-login-area/log-in
Thank you for taking the time to read about our terms and advice during this period. We hope you can enjoy your Dunster House garden product for many years to come.