EXPERT REVIEWED 
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INSTALATION AVAILABLE Greenhouse Steel XL28582-Serial number
First Added - August 4 2022
Last Updated - August 4 2022 - 0 Data Points Updated - 37 Data Points Added
Reviewed & curated by a panel of garden building experts. Using methodology 1.1
Product ID: SKU: 40618
Size: 3' x 7'
Merchants Checked: 12
Our verdict on the Greenhouse Steel XL28582-Serial number
The Greenhouse Steel XL28582-Serial number is treated using a powder coated process [1]. The windows window used on this particular 3′ x 7′ use a double glazed glazing material (Thickness was not specified).
Our experts say this has 6 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 construction like the one used on the roof of this greenhouse is rated one of the best by our panel of experts.
2. A 18mm thick roof construction as thick as this is something our expert rate to be one of the best available on greenhouses.
3. Our experts say this the tongue & groove floor material used here is one of the best available on all greenhouses.
4. A floor that is 18mm thick is something our experts say is one of the best available for this kind of greenhouse.
5. This double glazed glazing material is one that our experts say is one of the best available for windowed greenhouses.
6. A powder coated treatment like the one used on this greenhouse is one our experts are happy to say is one of the best around.
Below is a brief overview of how some of the key points of this greenhouse fairs across the market.
Roofing
Tongue & groove is the cladding used for the roofing, our experts rate this the best form of roof material and is the only type we’ve found on same-size greenhouses [2]. This roofing material is used on 4% of all greenhouses analysed, and 3% of the top 10% of greenhouses. Out of all 3′ x 7′ greenhouses we find this is actually the only one to use a tongue & groove roofing.
A 18mm thick roof boarding was used on this greenhouse which is the best thickness used for a roofing material and is the only thickness identified on same-size greenhouses [3]. It’s used on 1% of all greenhouses with a further analysis of the top 10% of greenhouses (78 in total) showing us that none of them use a roof of this thickness. Our data on all 3′ x 7′ greenhouses shows us this is the only one to use a 18mm roofing solution.
Read full analysis for roofing.
Flooring
Outstanding, our experts say most of the flooring options used are among the best.
The manufactures of this greenhouse chose tongue & groove for the floor construction, we rate this the best form of floor construction and is the only type found on this size of greenhouse [4]. This type of floor construction is used on 4% of all greenhouses we analysed, and 3% of the top 10% of those greenhouses. The data we have on all greenhouses shows us that this is the only 3′ x 7′ greenhouse that comes with a tongue & groove floor material.
A 18mm thick floor boarding is used here, this is the best floor board thickness according to our experts and a further analysis shows us this is the only thickness used on same-size greenhouses [5]. It’s found on 1% of all greenhouses with none of the 78 greenhouses that make up the top 10% using a floor of this thickness. Out of all 3′ x 7′ greenhouses it turns out that this is the only one to use a 18mm flooring.
Read full analysis for flooring.
Window
Double glazed windows come installed on this greenhouse. As a glazing option, we rate it the best glazing types and is also the only type found on 3′ x 7′ greenhouses [6]. This particular type of glazing is used on 1% of all windowed greenhouses with a look at the top 10% of greenhouses showing us that none of them choose to install windows with this kind of glazing. Out of all windowed 3′ x 7′ greenhouses this is the only greenhouse to make use of double glazed windows.
Read full analysis for window.
Height
The height of this greenhouse is 1125mm (4′) which is 69% less than the average 3′ x 7′ greenhouse, giving you 775.0mm (2′) less headroom.
Read full analysis for height.
You Might Also Consider
We found 10 3′ x 7′ greenhouses with comparable specifications. The Greenhouse Steel XL28582-Serial number has an Expert Score that is 31% lower than average and is £846 more expensive than average. If you are looking for the best value or highest expert scoring greenhouses out of the 10 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 £15,693 with this 3.2×6.5ft Mini Oblong Outdoor Greenhouse Floor Grow Unit Plants Vegetables Flowers. It is priced at £45, this is 34881% less than this and has an Expert Score of 82, 22 points higher than the Greenhouse Steel XL28582-Serial number.
Highest Expert Score – With an Expert Score of 85 vs 60 for this product, the Greenhouse Steel XL Green is the best 3′ x 7′ greenhouse with comparable specifications, and is priced at £142, that’s £15,596 less than the Greenhouse Steel XL28582-Serial number.
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 greenhouses that have a combination of features that can make them more suited to higher wind areas.
Greenhouse Steel XL Green
Topdeal Greenhouse Steel XL VDTD26205
Greenhouse Steel XL
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 1 other options that will fill those needs.
Greenhouse Steel XL28582-Serial number
Product Details
Comparisons of Similar Sheds
 |  |  |  |  | |
| Expert Score | 63 | 63 | 63 | 63 | 63 |
|---|---|---|---|---|---|
| Price | £13,242.15 | £13,847.05 | £5,830.89 | £14,581.04 | £1,289.00 |
| Size | 30' x 6' | 30' x 8' | 3' x 2' | 5' x 2' | 10' x 6' |
| Brand | Marlborough Greenhouses | Marlborough Greenhouses | Marlborough Combi Summerhouses | Clifton Log Cabins | Mercia |
| Material | Wooden | Wooden | Metal | Wooden | |
| Cladding Thickness | 12mm | 12mm | 12mm | ||
| Guarantee | 10 Years | 10 Years | 10 Years | 10 Years | |
| Go | Go | Go | Go | Go |
Sources
Merchants Checked
12 different sources were used to research information on this product, and 1 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.
ManoMano UK – 922302 products checked, found 2 matches.
Waltons – 231 products checked, found no matches.
Wickes – 19576 products checked, found no matches.
B&Q – 78905 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.
sheds.co.uk – 1999 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. Powder Coated: Typically used to give additional corrosion resistance to steel, powder coatings can be described as 100% solid paint which comprises a homogeneous blend of polymers, pigments and additives produced in the form of a fine powder. The powder is applied on the object to be coated. The object is then subjected to heat which causes the powder to melt, flow out and form a tough, coherent film.
Almost all the paints that are used for powder coating are epoxy polyester hybrid powders, these hybrids have properties similar to those of epoxy powders, however, their additional advantage is that they have improved resistance to overbake yellowing and more importantly for a garden structure improved weatherability. The polyester also helps counteract the poor UV light properties of pure epoxy coatings where chalking will occur in an exterior environment.
According to the BCF (British Coatings Federation) they say this about the durability of powder coated products “This method is often used for large work pieces such as pipe line valves, fence posts etc. or small articles from the electronics industry. These coatings give a thick, tough film with excellent corrosion resistance and good mechanical, electrical insulation and chemical properties.” ↩
2. Roof material types identified: tongue & groove ↩
3. Roof thickness types identified: 18mm ↩
4. Floor material types identified: tongue & groove ↩
5. Floor thickness types identified: 18mm ↩
6. Glazing material types identified: double glazed ↩