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Keter Factor 8 x 11ft Double Door Outdoor Apex Plastic Garden Shed

First Added - February 27 2022
Last Updated - August 4 2022 - 9 Data Points Updated - 3 Data Points Added
Reviewed & curated by a panel of garden building experts. Using methodology 1.1

Product ID: SKU: 484111

Size: 8' x 11'

Merchants Checked: 12

Available From: 2

HomeBase
£1,130.50
See Deal
Wickes
£1,320.00
See Deal

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70
Average Ranked in the Top 70% of Sheds.
Position 3794 of 5459 Sheds - Down 2,080 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 Keter Factor 8 x 11ft Double Door Outdoor Apex Plastic Garden Shed

The Keter Factor 8 x 11ft Double Door Outdoor Apex Plastic Garden Shed comes with an apex style roof, holds a 15 Years guarantee, and is fit with lockable double doors that use a lockable locking system. The windows window used on this particular 8′ x 11′ use a styrene [1] glazing material (Thickness was not specified).

Base material: plastic

Below is a brief overview of how some of the key points of this shed fairs across the market.

Guarantee

On a plastic shed, 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 plastic Sheds ranging from zero right up to a limited lifetime guarantee.

This plastic shed comes with a 15 years guarantee. Most plastic shed come with a 10 years guarantee (36.47% of them) [2].

For this particular brand (Keter) they offer 12 [3] different types of guarantees on their plastic sheds, with the 15 years guarantee on this being one of the shortest they offer. The 15 years guarantee is found on 31.25% of Keter plastic sheds [4], with a 5 year guarantee on 18.75%, a lifetime guarantee on 12.50% and a limited lifetime guarantee on 18.75% of its plastic sheds. It is great that this shed 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 8′ x 11′ plastic sheds (we found 361 of them) the most popular guarantee length offered by manufacturers was 10 years [5]. 44.32% came with a missing guarantee, 34.90% came with a 10 year guarantee, 12.74% came with a 15 year guarantee, 3.32% came with a 1 year guarantee, 3.32% came with a 3 year guarantee, 0.83% came with a 20 year guarantee, 0.28% came with a 5 year guarantee and 0.28% came with a 25 year guarantee.

Read full analysis for guarantee.

Cladding

The plastic cladding(walls) used here is an about average form of construction for shed walls out of the 2 types [6] we’ve identified on same-size sheds, that you’ll also see getting used on 2% (84 of 4,360) of all sheds analysed [7], as well as being used on 1% (4 of 436) of the top 10% of sheds [8]. You’ll also find the plastic cladding showing up on 1% of 8′ x 11′ sheds (5 in total) [9].

Read full analysis for cladding.

Roofing

Plastic is used as the roof covering. Our experts say it’s an about average roof covering material, and is also the only kind identified on same-size sheds [10]. It comes fitted on 1% of sheds and when it comes to the top 436 sheds that make up the top 10% we find none of them make use of this kind of roof covering. According to the data we have on all sheds, out of the the 8′ x 11’s this is the only one to use a plastic roof covering.

Read full analysis for roofing.

Flooring

The manufactures of this shed chose plastic for the floor construction, we rate this an about average form of floor construction out of 2 types found on same-size sheds [11]. This type of floor construction is used on 1% of all sheds we analysed, with none of the top 436 sheds making use of this kind of floor material. 1% of 8′ x 11′ sheds (2 in total) use plastic construction for the floor.

Read full analysis for flooring.

Window

Styrene windows come installed on this shed. As a glazing option, we rate it the worst out of the 2 glazing types found on 8′ x 11′ sheds [12]. This particular type of glazing is used on 6% of all windowed sheds and 1% of the top 10% of sheds with windows we analysed. 7% of 8′ x 11′ sheds with windows (16 in total) use styrene windows.

Read full analysis for window.

You Might Also Consider

We found 6 8′ x 11′ sheds with comparable specifications. The Keter Factor 8 x 11ft Double Door Outdoor Apex Plastic Garden Shed has an Expert Score that is 3% lower than average and is £90 less expensive than average. If you are looking for the best value or highest expert scoring sheds out of the 6 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 £530 with this 8′ x 12′ Palram Canopia Grey Skylight Plastic Shed. It is priced at £800, this is 66% less than this and has an Expert Score of 87, 10 points higher than the Keter Factor 8 x 11ft Double Door Outdoor Apex Plastic Garden Shed.

Highest Expert Score – With an Expert Score of 87 vs 77 for this product, the 8′ x 10′ Suncast New Tremont Three Apex Roof Plastic Garden Storage Shed is the best 8′ x 11′ shed with comparable specifications, and is priced at £1,649, that’s £319 more than the Keter Factor 8 x 11ft Double Door Outdoor Apex Plastic Garden Shed.

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 Reverse Apex Shed
10′ x 8′ Forest Premium Tongue & Groove Pressure Treated Double Door Apex Shed
13′ x 7′ Shire Jersey Premium Pressure Treated Double Door Wooden Garden 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 Green Metal Shed 108GEYZ
10′ x 8′ Yardmaster Castleton Anthracite Metal Shed
10′ x 8′ Yardmaster Shiplap Metal Shed 108TBSL

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 Castleton Anthracite Metal Shed
10′ x 8′ Yardmaster Shiplap Metal Shed 108TBSL
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′ Shed Republic Ultimate heavy-duty Reverse Apex Workshop Double Door

Product Details

Building Type
Apex Sheds, BBQ Sheds, Cheap Large Sheds, Cheap Sheds, Double Door Sheds, Extra Large Sheds, Garden Sheds, Heavy Duty Plastic Garden Sheds, Large Sheds, Plastic Sheds, Plastic Sheds With Windows, Shed with Windows, Solid Sheds, Wide Sheds
Metric Size (Meters)
8' x 11'
Material
Plastic
Roof Style
Apex
Number of Windows
1
Door Type
Double Door
Treatment Type
Untreated
Guarantee
15 Years
Range
Factor
External Dimensions
(H)243 x (W)256.5 x (D)331.5cm
Product Contains
x1 Flat Packed Product x1 Assembly Instructions
Internal Dimensions
(H) 238.5 x (W)236.5 x (D)311.5cm
Additional Information
Just a light wash is needed to keep your shed looking like new season after season
Additional Assembly Information
Your shed, your way, assemble your shed with the windows on either the left or right to suit your outdoor space
Product Dimensions
(H)243 x (W)256.5 x (D)331.5cm
Assembly Options
Self Assembly Required
Model Number
230730
Model Name
Factor 8x11
Locking System
Lockable
Weight Of Product (kg)
180
Number Of Doors
2
Effects And Finish
Wood-look effect finish
Floor Material
Plastic
Base Included
Not Included
Glazing Material
Styrene
Additional Delivery Information
Easy self build. No Installation service available
Roof Covering
Plastic
Shed Construction Type
Shiplap Tongue & Groove
Window Size (Metric)
nan x nan

Comparisons of Similar Sheds

bms2500_01free71tp-1aa_shire-large-plastic-storage-with-shelves-main-min12817719-17348956237244187290112632159_03c_bqGPID_1100649965_00
Expert Score 7575757573
Price £269.99£99.99£785.00£365.00£1,225.00
Size 4' x 3'2' x 1'6' x 6'4' x 6'7' x 7'
Brand SuncastShireKeterKeter
Material PlasticPlasticPlasticPlasticPlastic
Cladding Thickness 2mm
Guarantee 5 Years1 Years15 Years15 YearsLimited Lifetime
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.

Wickes – 19576 products checked, found 1 match.
Homebase – 35509 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.
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. Styrene (Polystyrene (High Impact) HIPS): Styrene as it is commonly known or High Impact Polystyrene (HIPS) is a very versatile form of plastic. It has a very wide range of uses but for garden buildings styrene is typically used as a budget option for windows.

Styrene is a shatter-resistant material, which is why it is ideal for situations where safety needs to be considered, such as playhouses. This benefit can be offset by a few other drawbacks, unfortunately styrene has a tendency to yellow over time (the technical term is Photoyellowing and it is caused by prolonged exposure to UV Light), the degradation of its polymers over time also causes it to become more brittle.

Another drawback of styrene is its thermal coefficient of expansion (it is 80 x 10-6), this is higher than most other glazing options. This means that as the material heats up and cools it can contract and expand more than other glazing options. This cycle can lead to a loose fit of windows over time.

According to data from the British Plastics Fedaration the physical properties of Styrene (Polystyrene (High Impact) are that it is not very good when exposed to high heat with a maximum continuous use temperature of between 60 to 80 °C. This is coupled with the fairly low range the Notched Impact Strength data shows of 10.0 – 20.0 Kj/m². 

2. Global guarantee data sourced from: All 15 years sheds 

3. Guarantee types identified: 10 years, 15 years 

4. Guarantee data sourced from: Keter 15 years sheds 

5. 8′ x 11′ guarantee data sourced from: 361 8′ x 11′ 15 years guaranteed sheds 

6. Cladding types identified: plastic, resin 

7. Global cladding data sourced from: All plastic sheds 

8. Top cladding data sourced from: Top 436 plastic sheds 

9. 8′ x 11′ cladding data sourced from: 361 8′ x 11′ plastic sheds 

10. Roof covering types identified: plastic 

11. Floor material types identified: plastic, polyethylene 

12. Glazing material types identified: polycarbonate, styrene 

Product ID: SKU: 484111

Size: 8' x 11'

Merchants Checked: 12

Available From: 2

HomeBase
£1,130.50
See Deal
Wickes
£1,320.00
See Deal

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