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4×2 Trimetals Sentinel Metal Garden Storage Unit

First Added - February 27 2022
Last Updated - August 4 2022 - 17 Data Points Updated - 2 Data Points Added
Reviewed & curated by a panel of garden building experts. Using methodology 1.1

Product ID: SKU: SENTINEL

Size: 4' x 2'

Merchants Checked: 12

Available From: 2

ShedStore
£504.99
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BuyShedsDirect
£504.99
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75
Good Ranked in the Top 2% of Garden Storage.
Position 20 of 1017 Garden Storage - Down 8 places from previous update.
Quality of materials
Construction quality
Ease of construction
Value for money

See how our panel of industry experts helped create the impartial judging criteria used to calculate the Expert Score.

Our verdict on the 4×2 Trimetals Sentinel Metal Garden Storage Unit

The 4×2 Trimetals Sentinel Metal Garden Storage Unit comes with a pent style roof, holds a 25 Years guarantee, is fit with lockable seats that use a lockable locking system, and is treated using a galvanised process [1].

Base material: steel [2]

Our experts say this has 1 stand out feature. 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. A galvanised treatment like the one used on this garden storage 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 garden storage fairs across the market.

Treatment/Guarantee

The galvanised treatment process used here is the best type of treatment out of 2 [3] types we’ve identified on same-size garden storage that you’ll see getting used on 14% [4] (137 of 965) of all garden storage analysed, as well as being used on 36% [5] (35 of 96) of the top 10% of garden storage. You’ll also find the galvanised treatment showing up on 19% of 4′ x 2′ garden storage (20 in total [6]), and if we compare this item against those 20 we find it’s Expert Score is 10% higher than the average score for a 4′ x 2′ galvanised garden storage.

On a metal garden storage, the guarantee that the manufacturer offers is usually a very good indicator of the quality of the building. The longer the guarantee the more the manufacturer believes in the quality of the building they have produced. Typically we see manufacturer guarantees for metal Garden Storage ranging from zero right up to a 25 years guarantee.

This metal garden storage comes with a 25 years guarantee. Most metal garden storage come with a 15 years guarantee (26.04% of them) [7].

For this particular brand (Trimetals) they offer 11 [8] different types of guarantees on their metal garden storage, with the 25 years guarantee on this being the only they offer. The 25 years guarantee is found on 100.00% of Trimetals metal garden storage [9]. It is great that this garden storage was given one of the highest guarantees offered by the brand, and this shows the manufacturer has a lot of faith in the overall quality of this part of their product range.

When looking at comparable 4′ x 2′ metal garden storage (we found 106 of them) the most popular guarantee length offered by manufacturers was 10 years [10]. 72.64% came with a missing guarantee, 4.72% came with a 10 year guarantee, 4.72% came with a 2 year guarantee, 4.72% came with a 5 year guarantee, 3.77% came with a 20 year guarantee, 3.77% came with a 25 year guarantee, 2.83% came with a 15 year guarantee, 1.89% came with a 1 year guarantee and 0.94% came with a 12 year guarantee.

Read full analysis for treatment/guarantee.

Cladding

The steel cladding(walls) used here is an about average form of construction for garden storage walls out of the 2 types [11] we’ve identified on same-size garden storage, that you’ll also see getting used on 26% (253 of 965) of all garden storage analysed [12], as well as being used on 36% (35 of 96) of the top 10% of garden storage [13]. You’ll also find the steel cladding showing up on 27% of 4′ x 2′ garden storage (29 in total) [14], and if we compare this item against those 29 we find it’s Expert Score is 16% higher than the average score for a 4′ x 2′ steel garden storage.

Read full analysis for cladding.

Roofing

Metal is the material used for the roofing, our experts rate this an about average form of roof material out of the 2 types we’ve found on same-size garden storage [15]. This roofing material is used on 2% of all garden storage analysed, and 20% of the top 10% of garden storage. 5% of 4′ x 2′ garden storage (5 in total) use metal construction for the roof, and when taking the average Expert Score of those 4′ x 2′ garden storage (96), the 4×2 Trimetals Sentinel Metal Garden Storage Unit is just above the average with an Expert Score of 97.

Read full analysis for roofing.

Height

The height of this garden storage is 720.0mm (2′) which is 61% less than the average 4′ x 2′ garden storage, giving you 438.0mm (1′) less height.

Read full analysis for height.

You Might Also Consider

We found 5 4′ x 2′ garden storage with comparable specifications. The 4×2 Trimetals Sentinel Metal Garden Storage Unit has an Expert Score that is 2% higher than average and is £21 less expensive than average. If you are looking for the best value or highest expert scoring garden storage out of the 5 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 £265 with this 4′ x 2′ Falcon 130 Heavy Duty Metal Garden Storage Box 400L. It is priced at £240, this is 110% less than this and has an Expert Score of 97, 0 points equal than the 4×2 Trimetals Sentinel Metal Garden Storage Unit.

The 4×2 Trimetals Sentinel Metal Garden Storage Unit is the best scoring garden storage available out of all 5 4′ x 2′ garden storage we analysed.

High Wind Area – If you live in a particularly exposed or high wind area then having a garden storage with a thicker cladding and higher than average frame thickness can be preferable. We found at least 3 garden storage that have a combination of features that can make them more suited to higher wind areas.
3’7 x 1’8 Forest Wooden Shiplap Apex Midi Wooden Garden Storage Outdoor Patio Storage
Adley 4′ x 3′ Tongue and groove Shiplap Storage Chest
4×2 Shire Wooden Garden Storage Unit

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 garden storage that have a combination of features that can make them more suited to higher wind areas.
3’7 x 1’8 Forest Wooden Shiplap Apex Midi Wooden Garden Storage Outdoor Patio Storage
4×2 Biohort StoreMAX 120 Metal Box
4′ x 2′ Falcon 130 Heavy Duty Metal Garden Storage Box 400L

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 garden storage that have options that you might find a better fit if this is a concern you have.
3’7 x 1’8 Forest Wooden Shiplap Apex Midi Wooden Garden Storage Outdoor Patio Storage
4×2 Biohort StoreMAX 120 Metal Box
4×2 Trimetals Sentinel Metal Garden Storage Unit

Product Details

Building Type
Garden Storage, Metal Garden Storage
Metric Size (Meters)
4' x 2'
Material
Metal
Roof Style
Pent
Door Type
Seat/Lid
Treatment Type
Galvanised
Guarantee
25 Years
Locking System
Lockable
Assembly Time (estimated)
1-3 hours
Eaves Height (Imperial)
720.0mm
Eaves Height (Metric)
720.0mm
External Depth (Imperial)
2'
External Depth (Metric)
660.0mm
External Width (Imperial)
4'
External Width (Metric)
1090.0mm
Ridge Height (Imperial)
1000.0mm
Ridge Height (Metric)
1000.0mm
Roof Material
Metal
Window Size (Metric)
nan x nan

Comparisons of Similar Sheds

eb-rowlinson-shelterlogic-log-rack-1180-x-2440-x-250mm-black-L-3179213-10836007_1garden-storage-box-grey-109x67x65-cm32538-serial-number-L-18867499-37065779_1garden-storage-box-grey-149x99x93-cm32546-serial-number-L-18867499-37057362_1garden-storage-box-green-109x67x65-cm32537-serial-number-L-18867499-37056641_1
Expert Score 8070787570
Price £109.99£10,699.35£6,818.99£189.00£10,699.35
Size 7' x 1'3' x 2'4' x 3'5' x 5'3' x 2'
Brand RowlinsonMarlborough Reverse WorkshopsMarlborough Reverse WorkshopsShelter LogicMarlborough Reverse Workshops
Material MetalMetalMetalMetalMetal
Cladding Thickness
Guarantee 10 Years10 Years1 Years10 Years
GoGoGoGoGo
Joel Bird

Joel Bird

Profile

Our resident shed building expert Joel was the 2014 winner of Channel 4’s Amazing Spaces Shed of the Year having beat over 10,000 applicants to win. He returned to the show the following year as a judge. He is also the author of The Book of Shed and has designed & built over 50 small bespoke garden builds. Joel has appeared on various TV or Radio shows include George Clarkes Amazing Spaces, Alan Titchmarsh Love your Garden, Chris Evans Breakfast Show and BBC Radio 4’s Saturday Live.

Meet the experts

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.

Buy Sheds Direct – 1635 products checked, found 1 match.
Shedstore – 1373 products checked, found 1 match.
Waltons – 231 products checked, found no matches.
Wickes – 19576 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.
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.
Tiger Sheds – 635 products checked, found no matches.


1. Galvanised: Galvanising steel or Zinc Galvanised steel as it is sometimes called refers to the process where steel is immersed into molten zinc. This is where a series of zinc-iron alloy forms a series layers via a metallurgical reaction between the iron and zinc, providing a robust coating which is an integral part of the steel.

Galvanised steel is among the most corrosion resistant due to its sacrificial protection and self-repairing properties. According to the Galvanizers Association they say “Hot dip galvanising offers coverage both externally and internally within hollow sections, it self-repairs when damaged, sacrifices itself to protect the base metal, is environmentally sustainable, has good impact and abrasion-resistance and a maintenance-free life of 50 years or more. Galvanised steel is widely used in applications where corrosion protection is needed and can be identified by the crystallised pattern on the surface (often called a ‘spangle’).” 

2. Steel: Is the “world’s most important engineering and construction material” according to the World Steel Accosiation. When it comes to garden structure steel is often a very strong and durable metal, although if it is untreated then it is prone to rust and corrosion. Steel is an alloy of iron mixed with less than 2% carbon and 1% manganese and small amounts of silicon, phosphorus, sulphur and oxygen. When steel comes into contact with water and oxygen there is a chemical reaction and the steel begins to revert to its original form – iron oxide (that’s Rust to the layperson). Steel must be coated in a protective layer to stop this reaction, for most garden applications this consists of powder coating or the more stable and long lasting use of galvanising the steel first. 

3. Treatment types identified: galvanised, untreated 

4. Global treatment data sourced from: All galvanised garden storage 

5. Top treatment data sourced from: Top 96 galvanised garden storage 

6. 4′ x 2′ treatment data sourced from: 106 4′ x 2′ galvanised garden storage 

7. Global guarantee data sourced from: All 25 years garden storage 

8. Guarantee types identified: 10 years, 20 years, 25 years 

9. Guarantee data sourced from: Trimetals 25 years garden storage 

10. 4′ x 2′ guarantee data sourced from: 106 4′ x 2′ 25 years guaranteed garden storage 

11. Cladding types identified: aluminium, metal, steel 

12. Global cladding data sourced from: All steel garden storage 

13. Top cladding data sourced from: Top 96 steel garden storage 

14. 4′ x 2′ cladding data sourced from: 106 4′ x 2′ steel garden storage 

15. Roof material types identified: metal, tongue & groove 

Product ID: SKU: SENTINEL

Size: 4' x 2'

Merchants Checked: 12

Available From: 2

ShedStore
£504.99
See Deal
BuyShedsDirect
£504.99
See Deal

Support WhatShed: by making a purchase after clicking a link above, a portion of the sale supports this site.