Outdoor Resin Storage Sheds


Modish in style, durable to the weather elements, sturdy build quality and low maintenance at a reasonable price are the reasons why Factor’s global best selling outdoor resin storage sheds receive outstanding customer feedback – A popular choice for those searching for a low maintenance storage solution.

6 sheds complete Keter’s Factor range, spanning in size from 6 x 3 ft to 8 x 11 ft.

Outdoor Resin Storage Sheds

Factor’s outdoor plastic storage sheds provide an affordable solution for where space indoors is at a premium, creating more room in the home and garage by conveniently storing outdoor stuff where you need it most – Outside.

Factor sheds refrain from equipping their sheds with sparkly quality finishing touches to retain their competitive edge however their world-wide sales and feedback reflect their build quality. Size of storage facility depends on one’s situation, Factor’s provide the solution through their range of variable dimensions.

We departed from the traditional wooden shed world due to time restraints regarding maintenance. A resin composition has been a great decision for our behalf, relinquishing upkeep duties to a thing of the past. The only maintenance role now involves a light pressure hose down when the grime appears to replenish the shine, a job I’ve come to quite enjoy.

Assembling flat pack plastic sheds is a very straightforward procedure if you adhere to the foundation rules. Although initially daunted by the construction project we complied in preparing the correct foundations, presenting us with a quick, clear-cut, uncomplicated process.

Foundation rules are explained in the assembly section further down the page.

This page describes Factor’s construction and composition accompanied by an image and video regarding each Factor shed. I’ve included links to prices and an in-depth review where additional information, images and accurate internal/external measurements are provided.

Keter Factor 6×3

Keter Factor 6 x 3 Shed Review:

Keter Factor 6 ft x 3 ft

6 ft x 3 ft

Keter Factor 6 x 3 Shed Prices

Construction and build quality of the Factor range

The facade’s composition regards thick weatherproof panels manufactured from polypropylene resin, designed to resist the unsightly appearance dents exhibit.

The molding procedure represents an attractive wood-like texture displaying a wood panelling effect with fine details of textured grain embedded within the surface presented in a modish beige shade, escaping that plastic look with a stylish appearance to complement any garden, patio or home-yard.

The weather resistant resin walls are reinforced around a steel framework during assembly providing enhanced stability. Durable and weatherproof credentials create the virtually maintenance-free composition, only requiring a quick spray-hose down to replenish the spotless appearance.

Additional UV protection elements blend into the polypropylene resin mix aiding resistance to colour fade and cracking when exposed to the sun.

Keter Factor 4×6

Keter Factor 4 x 6 Shed Review:

Factor 4 ft x 6 ft

4 ft x 6 ft

Keter Factor 4 x 6 Shed Prices

Factor’s Low Maintenance Roofs

All Factor roofs are apex in design resulting in a quick efficient drainage system. The adequate angled pitch ensures rainfall runs off with immediate effect, devoid from the occurrence of puddles developing.

Steel Truss System Under-girds Larger Factor Sheds

Steel Truss System Under-girds Larger Factor Sheds

The make-up regards a thick composition of polypropylene resin tinted with a dark grey shade. Factor sheds maintain their competitive edge therefore absent from stylish molded slate effect roof-tiles the more expensive models exhibit however the same weatherproof credentials are an integral part of their manufacture.

Polypropylene resin provides the survival elements to withstand decay and rot when exposed to long-term adverse weather conditions, the antithesis of roofing felt succumbing to their short-term lifespan through deterioration. Contrarily, polypropylene resin remains unaffected through weather-attack, unsusceptible to decaying issues leads to no future re-roofing problems.

The avoidance of rainfall seeping into the shed where the walls adjoin is delivered by the roof extension beyond the facade creating eaves.

The roof arrives in flat-packed sheet form requiring assemblers to align the holes and secure with screws around the steel frame. The larger the shed, additional steel beams deliver a truss system further bolstering support. This supplementary enhancement produces a stout topping, Factor sheds are capable of carrying snow-loads in excess of 75 kg/m.

Keter Factor 6×6

Factor 6 x 6 Shed Review:

Factor 6 ft x 6 ft

6 ft x 6 ft

Factor 6 x 6 Shed Prices:

Factor Shed’s Built-In Floors

An integrated resin floor provides the advantage over the traditional alternative. When water stagnates underneath a shed floor this inevitably leads to the demise of a wooden structure due to the rot setting in however a resin composition resists such decay providing long-term protection when stood in damp conditions.

Integrated Floor Panel

Integrated Floor Panel maintains a clean environment whilst resistant to decay

Factor floors are manufactured from polypropylene molded into a thickset resin bed whilst additional toughening elements blend within the mix providing a hard-wearing surface able to subsist demanding pressures wheeling in weighty equipment and heavy-duty storageĀ entails.

The floor comes in resin sheets, interlinking with each other making up the base expanse. The walls interconnect within the outskirts of the floor by virtue of an interlocking mechanism creating a true built-in feature.

Integrated floors prevent the outside environment blowing gusts of debris and rainfall inside at the base of the shed, maintaining a clean internal environment, contrary to these problems metal sheds are susceptible to as they seldom have walls incorporated into an integral floor.

Keter Factor 8×6

Factor 8 x 6 Shed Review:

Factor 8 ft x 8 ft

8 ft x 8 ft

Factor 8 x 6 Shed Prices

Factor Sheds Additional Features

All Factor sheds with the exception of the 6 x 3 ft model include an attractive poly-carbonate squared-effect window delivering natural daylight inside. The window can be installed on either side dependant on surroundings, requiring to work out which side suits the location prior to assembly.

Factor Shed Window

Window can be installed on either side

Shelf supports and shelves are inclusive on most models however their storage capacity remains rather limited. We took advice from loads of previous resin shed assemblers opting to purchase large plastic stacker boxes and installed stand-alone shelving.

Each individual review explains whether shelf supports and/or shelves are included for that particular model.

It’s quite staggering how much additional storage can accommodate within a shed by installing free-standing shelves exploiting the generous internal height plus they can support one heck of a weighty amount. Worth considering.

Over a 2 metre internal height enables easy movement around inside, headroom increases further for the 8 ft width models eliminating that cramped-over scenario whist the removal of a hemmed-in feeling is delivered by the full length skylight embedded within the apex peak, a translucent strip distributing plenty of daylight into the interior supplemented by the window.

Ventilation Creates a Fresh-Air Current

Ventilation Creates a Fresh-Air Current

Ventilation is built into all Factor sheds, integrated into the front and back above the doors at the top of the roof peak providing a current of fresh air to constantly circulate the interior creating a preserved atmosphere essential for storage protection, abolishing that inherent sweaty plastic environment original resin sheds once generated.

Keter Factor 8×8

Factor 8 x 8 Shed Review:

Factor 8 ft x 8 ft

8 ft x 8 ft

Factor 8 x 8 Shed Prices

Factor’s Wide Access Doors

A double door entry system is delivered by all Factor sheds including the 4 x 6 ft model accompanied by a secondary slim door panel next to the main door enabling untroubled access into all sheds.

Regarding the 4 x 6 ft Factor shed, the doors can be assembled to open either way, requiring to work out which way the door swings open is best to aid your services and location prior to construction.

Pad-Lockable Double Doors

Pad-Lockable Double Doors

The door manufacture comprises a similar make-up to the facade where thick polypropylene resin is molded to represent stylish wood panelling consisting of a detailed grain texture flowing through the surface exhibiting a taupe shade, integrating gracefully with the facade’s beige tint.

Each door contains a large grip-able handle whilst a leaver secures into the pad-lockable clasp’s groove to ensure closure. Security-wise, a padlock slots into a hole presented within the clasp to enable locking. Padlock is not included.

Keter Factor 8×11

Factor 8 x 11 Shed Review:

Factor 8 ft x 11 ft

8 ft x 11 ft

Factor 8 x 11 Shed Prices

Factor Sheds Environmental Impact & Maintenance

Virtually maintenance-free, Factor sheds do not rust, rot, peel or decay and will never require re-varnishing or re-roofing. UV protection prevents cracking and fading surviving exposure to sunburn. A wash down when dirty constitutes their virtually maintenance-free benefits.

Manufactured from 100% recyclable Polypropylene resin that’s resilient, maintenance-free, durable and helps the environment trumpets out Factor’s green and low maintenance credentials.

Most of the time plastic sheds only require a light spray-hose down. If grime or mildew becomes ingrained a soft brush dipped in warm water containing light detergent accomplishes the removal of stubborn marks. Never use abrasive cleaning materials like wire wool, this may damage the surface of the plastic.

A couple of cups of white vinegar plus a dribble of washing up liquid into a warm bucket of warm water works wonders if light detergent struggles to shift the grime but we find this is seldom the case.

After cleaning with the solution, just hose the shed down and that’s the maintenance job done!

How's this for Maintenance?

How’s this for Maintenance?

Factor Shed Assembly

Assembling Factor sheds takes two people approximately 3 hours to half a day, maybe more dependant on the shed size. Common household tools construct all these sheds. Assembly requires following the step by step procedure represented in the instructions implementing what’s shown.

There are huggings of screws, a power screwdriver set on a low torque setting to prevent rounding the screws quickens the process. Room is required all around the shed whilst a step ladder is a necessity for securing the roof panels. Construction entails interlocking the panels and lining up the holes to the steel framework and securing with screws.

To accomplish a perfect construction and easy assembly it’s imperative the shed sits on solid level foundations. Wood or concrete laid perfectly level provide an ideal base for a plastic shed construction. Best not to side-step this stipulation – Those who do adhere to the foundation rules write wonderful feedback.

The reasons solid level foundations are so important:

  1. Level footings deliver a straightforward assembly, simply because the panels line-up with ease. If you’re not level on the base, alignment of the panels becomes challenging by the time you’re 8 ft up on the roof.
  2. A level base delivers a vertical stance ensuring the doors align plumb, swing open and close correctly.
  3. Level foundations accomplish a true stance ensuring the roof applies equal force on all sides of the shed preventing leaning pressures.
  4. Solid foundations provide the perfect base for the floor to survive heavy duty demanding pressures.

Once the shed is erected, best practice is to anchor the shed down into the foundations. Indentations are presented within the resin floor where anchor bolts are required and not included, the type depends on the base material. Anchoring secures the shed increasing wind resistance levels many fold – An advisable measure to undertake.

Quality Plastic Sheds

Pros and Cons of Factor Sheds


  • Attractive wooden effect display
  • Stylish & modish beige presentation
  • Destined to complement any garden surroundings
  • Sizes to suit most requirements and locations
  • Competitively priced to fit most budgets
  • Global best seller
  • Outstanding feedback represented in reviews
  • Weatherproof, resistant to rust, rot & decay
  • Sturdy build quality
  • Weatherproof polypropylene resin roof
  • Enhanced roof support through a steel truss system
  • Hard wearing floor provides tractor support
  • Integrated floor maintains a clean internal environment
  • Polypropylene resin floor resists decay
  • Easy access lockable double doors
  • 10 year limited warranty
  • Window & skylight deliver natural daylight
  • Ventilation generates a fresh air current
  • Effortless to maintain appearances


  • Imperative foundations are solid & level
  • Anchor the shed down into the foundations
  • Lacking on quality finishes
The Modern Keter Factor 6 x 3 ft Shed

The Modern Keter Factor 6 x 3 ft Shed

Final Verdict

Factor sheds maybe lacking in some final quality finishing touches like quality door hardware and stainless steel locking systems inclusive with many of their competitors however everything else is in place to provide weather-resistance, sturdy build quality and an undemanding duty to replenish the shine.

Where Factors pressure their competitors however is their competitive price for every shed within this range and sizes to suit a whole range of patio and garden locations, the reasons for their global sales.

Superb feedback represented through reviews with an impressive 10 year limited warranty provides reassurance taking this high quality budget range into the top league of resin sheds.

Factor Sheds 10 Year Limited Warranty

Keter Factor Sheds


Read About Me

Any questions related to this Factor range, please drop them in the comment section below. Always happy to help.

Thanks for reading,

Good luck with your decision,






  1. Nathan

    I did not even know that you could get sheds made out of this material. I have been looking at either having a shed made out of wood or buying one, but now that I have seen these, this would be a much better choice. Low maintenance is the seller for me. I believe I will have to go with one of the bigger sizes to be able to fit most of my wife’s stuff in there. Don’t tell her I said that. Thanks for your knowledge.

    • Simon

      Hi Nathan,

      Thanks for dropping by and reading about Keter’s range of Low Maintenance Factor sheds.

      We too were unaware regarding a plastic/resin manufacture however due to the constant yearly maintenance hassles our last wooden facility demanded caused us to look around for an alternative solution due to time restraints.

      Metal and plastic sheds were the alternative, the effortless wash down to re-sparkle the facade, integrated air vents maintain a preserved environment, built-in floor keeps inside clean whilst the weatherproof design resistant to dents, rust and decay is what turned our attention towards a resin composition upon inspecting both varieties.

      Ha – Yeah we all collect so much stuff nowadays, it’s where to store indoors what’s causing the problems due to room inside most homes being at such a premium, having a facility stood outside serves the convenience to accommodate outdoor storage where you need it most – Outside.

      If you’re after a large size, not wishing to spend a fortune and have room to locate the dimensions, the Factor range has sizes to suit most circumstances, up to 8 x 11 ft which fits an incredible amount of gear.

      Thanks again Nathan. Good luck choosing your resin shed if you decide to walk down the low maintenance route,


  2. Wing

    The fact that these can be power washed is a big plus for me. No need to worry about mold since it’s not wood or other organics that are susceptible to mold. The look is nice too. I think the 6×6 is probably the most suitable for me personally since I have some projects to do but not too much.

    • Simon

      Hi Wing,

      Thanks for reading and commenting.

      Yeah, this is the beauty of the plastic/resin variety, they’re low maintenance – All it takes is a wash down when dirty to bring them back looking pristine again.

      If you are power-washing, go easy around the vents as obviously water will enter into the shed if you power up inside the vents. Any stubborn marks as mentioned can be removed with a hot bucket of water with some washing up liquid. Add a couple of cups of white vinegar if anything is ingrained into the plastic.

      Yes, the Factor 6×6 is a popular shed as the size and storage options do suit a lot of people with the added benefit of a very competitively priced storage facility.

      Thanks again,


  3. Amanda

    Wow, I had no idea I would be able to fit a smaller shed outside my tiny apartment. I moved into a new place and my mountain bike has been sitting outside for months! Definitely looking into this. Thank you for the information! Do you know how many years these sheds can last?

    • Simon

      Hi Amanda,

      Thanks for taking your time to read and comment.

      I am presuming you’re looking at the 6×3 or 6×4 Keter Factor here when you say small shed.

      Yeah, the 6×4 is very popular for storing bikes as it’s deep enough and has a small side door that provides even better access if needed. I certainly see your point with leaving a bike outside as this will start rusting over time being subject to the ever changing weather conditions.

      How many years will plastic last? The longevity of Plastic / resin is really indefinite as it’s weather-resistant and durable to the ever changing weather conditions, reason it’s becoming a popular alternative to the wooden variety due to the yearly maintenance duties associated with them.

      Good luck with your decision and thanks for looking,


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