EXPERT REVIEWED 
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INSTALATION AVAILABLE Forest Garden Xtend 2.98 x 2.9m Insulated Garden Office with 1/2 Window including Installation
First Added - August 4 2022
Last Updated - August 4 2022 - 0 Data Points Updated - 55 Data Points Added
Reviewed & curated by a panel of garden building experts. Using methodology 1.1
Product ID: SKU: BUNDLE-XTEND3.0PIN
Size: 9' x 9'
Merchants Checked: 12
Our verdict on the Hartwood 3m Premium Insulated Home Office
The Hartwood 3m Premium Insulated Home Office comes with a pent style roof, holds a 15 Years guarantee, fit with double doors, and makes use of fsc® materials. The 2 windows used on this particular 9′ x 9′ use a 4mm single glazed material.
Base material: timber
Certifications this product meets:
FSC certified timber[1]
Our experts say this has 5 stand out features. A stand out feature is something found on over 70% of the top 10% of products in a particular category or is an exceptionally good feature as rated by our panel of experts.
1. The tongue & groove cladding used on this shed is one the best available for sheds rated by our experts.
2. The structural insulated panels construction like the one used on the roof of this shed is rated one of the best by our panel of experts.
3. A 122mm thick roof construction as thick as this is something our expert rate to be one of the best available on sheds.
4. The epdm synthetic rubber roof covering found on this shed is rated to be one of the best by our experts.
5. A floor that is 108mm thick is something our experts say is one of the best available for this kind of shed.
Below is a brief overview of how some of the key points of this shed fairs across the market.
Cladding
The tongue & groove cladding(walls) used here is the best form of construction for shed walls out of the 4 types [2] we’ve identified on same-size sheds, that you’ll also see getting used on 35% (1,543 of 4,360) of all sheds analysed [3], as well as being used on 21% (92 of 436) of the top 10% of sheds [4]. While you’ll find that the Expert Score of this shed is 7 points lower than the average for tongue & groove clad 9′ x 9’s (80 vs the average of 87) [5], you can be sure it’s not due to the cladding as this one of the highest scoring materials found on 9′ x 9′ sheds. You’ll also find the tongue & groove cladding showing up on 49% of 9′ x 9′ sheds (132 in total).
Read full analysis for cladding.
Roofing
Structural insulated panels is the cladding used for the roofing, our experts rate this the best form of roof material out of the 4 types we’ve found on same-size sheds [6]. This roofing material is used on 1% of all sheds analysed, and after looking top 10% of sheds (436 in total), none of them make use of this roof material. Out of all 9′ x 9′ sheds we find this is actually the only one to use a structural insulated panels roofing.
A 122mm thick roof boarding was used on this shed which is the best thickness used for a roofing material out of 13 thicknesses identified on same-size sheds [7]. It’s used on 1% of all sheds with a further analysis of the top 10% of sheds (436 in total) showing us that none of them use a roof of this thickness. Our data on all 9′ x 9′ sheds shows us this is the only one to use a 122mm roofing solution.
Epdm synthetic rubber is used as the roof covering, and out of 5 types identified on same-size sheds [8], is said to be the best roof covering material. It comes fitted on 1% of sheds and used on 1% of the top 10% of 9′ x 9′ sheds. 1% of 9′ x 9′ sheds (3 in total) make use of an epdm synthetic rubber material as a roof covering, and when taking the average Expert Score of those 9′ x 9′ sheds (76), the Hartwood 3m Premium Insulated Home Office is just above the average with an Expert Score of 80.
Read full analysis for roofing.
Flooring
The manufactures of this shed chose osb for the floor construction, we rate this an about average form of floor construction out of 3 types found on same-size sheds [9]. This type of floor construction is used on 20% of all sheds we analysed, and 5% of the top 10% of those sheds. 20% of 9′ x 9′ sheds (55 in total) use osb construction for the floor.
A 108mm thick floor boarding is used here, this is the best floor board thickness according to our experts out of 12 found on same-size sheds [10]. It’s found on 1% of all sheds with none of the 436 sheds that make up the top 10% using a floor of this thickness. Out of all 9′ x 9′ sheds it turns out that this is the only one to use a 108mm flooring.
Read full analysis for flooring.
Window
Single glazed windows come installed on this shed. As a glazing option, we rate it an about average out of the 6 glazing types found on 9′ x 9′ sheds [11]. This particular type of glazing is used on 16% of all windowed sheds and 19% of the top 10% of sheds with windows we analysed. 16% of 9′ x 9′ sheds with windows (30 in total) use single glazed windows.
The windows on this shed use a 4mm thick glazing, we rate this one of the best thicknesses for window glazing out of 6 different thicknesses found on same-size sheds [12]. Glazing this thick is found on 17% of all the windowed sheds we analysed and used on 11% of the top 10% of windowed sheds. Even though the Expert Score of this shed is 14 points lower than that of the average for 4mm glazed 9′ x 9’s (80 vs the average of 94), you can be sure it’s not due to the thickness of the windows because this one of the highest scoring available on 9′ x 9′ sheds. 21% of 9′ x 9′ sheds (38 in total) use 4mm thick glazing.
Read full analysis for window.
Height
The height of this shed is 2500mm (8′) which is 23% more than the average 9′ x 9′ shed, giving you 472.0mm (2′) extra headroom.
Read full analysis for height.
Doors
The door height is 1,950.00mm (6′) tall which is 22% or 348.86mm (1′) taller than the average 9′ x 9′.
The door width is 1,500.00mm (5′) wide which is 27% or 321.18mm (1′) wider than the average 9′ x 9′.
Read full analysis for doors.
You Might Also Consider
We found 232 9′ x 9′ sheds with comparable specifications. The Hartwood 3m Premium Insulated Home Office has an Expert Score that is 9% lower than average and is £383 more expensive than average. If you are looking for the best value or highest expert scoring sheds out of the 232 with comparable specifications the following might be of interest.
Best value – If you are looking for something comparable that costs less, then you could save £10,776 with this Optional extra – Add top coat Security Shiplap 10′ x 8′ Dip Treated Shed Single Door with Four Fixed Pane Window Top Coat. It is priced at £303, this is 3561% less than this and has an Expert Score of 87, 7 points higher than the Hartwood 3m Premium Insulated Home Office.
Highest Expert Score – With an Expert Score of 97 vs 80 for this product, the 13’2 x 6’6 Shire Jersey Double Door Wooden Garden Shed is the best 9′ x 9′ shed with comparable specifications, and is priced at £1,099, that’s £9,980 less than the Hartwood 3m Premium Insulated Home Office.
High Wind Area – If you live in a particularly exposed or high wind area then having a shed with a thicker cladding and higher than average frame thickness can be preferable. We found at least 3 sheds that have a combination of features that can make them more suited to higher wind areas.
10′ x 8′ Forest Premium Tongue & Groove Pressure Treated Double Door Apex Shed
13’2 x 6’6 Shire Jersey Double Door Wooden Garden Shed
10′ x 8′ Forest Premium Tongue & Groove Pressure Treated Double Door Reverse Apex Shed
Coastal Consideration – If you live in a particularly wet or harsher environment such as by the coast then you might want to consider something with a more robust pressure treatment or something made from metal or plastic, both materials that are particularly suited to such harsh environments. We’ve found at least 3 sheds that have a combination of features that can make them more suited to higher wind areas.
10′ x 8′ Yardmaster Shiplap Metal Shed 108TBSL
10′ x 8′ Yardmaster Green Metal Shed 108GEYZ
10′ x 8′ Yardmaster Castleton Anthracite Metal Shed
Public-Facing – Extra security measures might be more of a concern if you’re placing your building in an area that is more public-facing than a garden. Features such as security windows or even having no windows at all, and the ability to lock all opening doors are usually much more important when you have something that is more public-facing. We found at least 3 sheds that have options that you might find a better fit if this is a concern you have.
10′ x 8′ Yardmaster Shiplap Metal Shed 108TBSL
10′ x 8′ Yardmaster Castleton Anthracite Metal Shed
10′ x 8′ Yardmaster Green Metal Shed 108GEYZ
More Child Friendly – If you have children and you are looking for something that has that little extra in terms of durability then tougher glazing options might be a better option. Here we have at least 3 other options that will fill those needs.
10′ x 8′ Forest Premium Tongue & Groove Pressure Treated Double Door Reverse Apex Shed
10′ x 8′ Forest Premium Tongue & Groove Pressure Treated Double Door Apex Shed
10′ x 8′ Forest Premium Tongue & Groove Pressure Treated Reverse Apex Shed
Product Details
Comparisons of Similar Sheds
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| Expert Score | 68 | ||||
|---|---|---|---|---|---|
| Price | £9,400.00 | ||||
| Size | 8'2" x 8'4" | ||||
| Brand | Forest Garden | ||||
| Material | Plastic | ||||
| Cladding Thickness | 97mm | ||||
| Guarantee | 15 Years | ||||
| Go |
Similar Categories
Garden OfficesModern Garden RoomsInsulated Garden OfficeShed With WindowsWooden ShedsLarge ShedsDouble Door ShedsInsulated Garden RoomsWooden Pent ShedsContemporary Sheds
Sources
Merchants Checked
12 different sources were used to research information on this product, and 2 contained information that we were able to use to compile the data used on this page.
The following merchants were checked on the 06 August, 2022 to see if they stocked this product.
Wickes – 19576 products checked, found 1 match.
sheds.co.uk – 1999 products checked, found 1 match.
Waltons – 231 products checked, found no matches.
B&Q – 78905 products checked, found no matches.
ManoMano UK – 922302 products checked, found no matches.
Wilko.com – 21232 products checked, found no matches.
Homebase – 35509 products checked, found no matches.
Buy Sheds Direct – 1635 products checked, found no matches.
BillyOh – 1244 products checked, found no matches.
Garden Buildings Direct – 1284 products checked, found no matches.
Shedstore – 1373 products checked, found no matches.
Tiger Sheds – 635 products checked, found no matches.
1. Untreated: Any wooden structure that is left untreated will have its lifespan dramatically shortened. This is especially the case with Douglas fir or European softwoods such as Whitewood (spruce) or Redwood (Pine), most garden buildings sold in the UK are made from such wood.
The Wood Protection Association says that “the risk of attack increases significantly if the moisture content of wood, for any reason, rises above 20%” they also talk about how more lower durability cuts of wood (known as sapwood) are getting used to build with than in years gone by. They also say that “sapwood on the other hand is a source of food for many species of fungi and insects and is always vulnerable to attack.” This risk is particularly prevalent with European softwoods.
The BS 8417 code of practice (this advises on the choice of timber species and the use and application of wood preservatives) and BS EN 350:2016 (this advises on methods for determining and classifying the durability of wood and wood-based materials against biological wood-destroying agents) says the natural durability class of such European softwoods is between 3 and 5. With class 3 listed as moderately durable, class 4 listed as slightly durable and class 5 listed as not durable. All three classes have a service life of less than 15 years in a frequently wet environment (such as a UK garden). Yet the application of a preservative treatment or modification of lower durability species is designed according to BS8605 part1 (this is the British standards specifications for external timber cladding) to extend service life to 15/30 years or more.
Having a wooden garden structure supplied as untreated is relatively rare. The vast majority of wooden buildings are supplied with some form of basic treatment, usually a short term water based dip treatment. If you buy an untreated wooden building/structure then we strongly advise that you treat it annually with a solvent-based wood treatment. For full penetration it requires 2-3 coats. It is also recommended that you treat the inside of the structure as well.
If you are wanting something that will require much less maintenance throughout the products life cycle then we would strongly suggest looking at something that is pressure treated also known as tanalised timber.
By correctly treating timber you can take a sub 15 year service life for a not very durable European softwood and extend its service life to 15/30 years or more according to the Timber Decking and Cladding Association. ↩
2. FSC Certified Timber: The Forest Stewardship Council (FSC) is an international organisation that is “dedicated to promoting responsible management of the world’s forests.” When you see the FSC certification it means the forest where this wood was sourced from is being managed in a way that preserves biological diversity, while ensuring it sustains economic viability. FSC-certified forests are managed to strict environmental, social and economic standards. FSC certified timber is comparable to Certified Timber. ↩
3. Cladding types identified: feather edge, interlocking boards, interlocking log, overlap board, shiplap tongue & groove, tongue & groove, wood ↩
4. Global cladding data sourced from: All tongue & groove sheds ↩
5. Top cladding data sourced from: Top 436 tongue & groove sheds ↩
6. 9′ x 9′ cladding data sourced from: 269 9′ x 9′ tongue & groove sheds ↩
7. Roof material types identified: osb, shiplap tongue & groove, structural insulated panels, tongue & groove ↩
8. Roof thickness types identified: 8mm, 9mm, 10mm, 11mm, 12mm, 16mm, 19mm, 122mm ↩
9. Roof covering types identified: epdm synthetic rubber, mineral felt, polyester felt, resin, sand felt ↩
10. Floor material types identified: osb, plastic, shiplap tongue & groove, tongue & groove ↩
11. Floor thickness types identified: 9mm, 10mm, 11mm, 12mm, 14mm, 16mm, 19mm, 108mm ↩
12. Glazing material types identified: acrylic, double glazed, horticultural glass, polyethylene, security windows, single glazed, styrene, toughened glass, toughened safety glass ↩
13. Glazing thickness types identified: 0.75mm, 2mm, 3mm, 4mm ↩