4 x 6 Ft Less Than 30 Mph Sheds

Discover the hidden potential of our versatile storage shed, which is designed to surpass your expectations when it comes to outdoor storage. From gardening tools, outdoor furniture, firewood to bicycles, it does an excellent job of keeping your outdoor essentials organized and shielded from the elements. Supported by robust galvanized steel pipe, it stands strong against wind gusts. The waterproof cover ensures your belongings stay dry and protected from rain and shine. With various size options, you can tailor your shed to accommodate your unique storage needs effortlessly. Experience practicality and durability in this one compact solution.

Designed for easy self-assembly, the 6Ft. W x 4 Ft. D power apex potting shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high-grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

We bought this shed as we liked the look of the glass pains, it is well made , and looks fabulous.. Anonymous. Dorset. Sat Jun 07 2025

4ft. x 6ft.

Designed for easy self-assembly, the 6 Ft. W x 4 Ft. D Power Pent Bike Shed - Doors High Side is the ideal storage shed for bikes, garden furniture and other garden belongings. The shed comes with wide double doors to provide good access for storage. This is a premium quality bike shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a storage shed which will last for many years.

Doing this alone in the wind was tricky but the kit went together well. Needs a few more of the 70mm screws when sent with the base kit. The ship lap on the door wings was a bit gappy so it doesn’t quite line up, and I’d prefer coach bolts for the hinges to make it a bit more secure, but it does the job. Roger. Wed Mar 18 2026

Designed for easy self-assembly. Overlap power pent wooden shed can be installed how you want by allowing you to choose whether to place the doors on the high or low side. All sheds have high-grade premium quality timber throughout including roof and floor No chipboard or OSB. Our wooden sheds use 10mm extra thick rustic looking overlap cladding responsibly sourced in line with our sustainability policy.

Designed for easy self-assembly, the shed can be installed how you want by allowing you to choose whether to place the doors on the high or low side. All sheds have high-grade premium quality timber throughout including roof and floor No chipboard or OSB. Their wooden sheds use 10mm extra thick rustic looking overlap cladding responsibly sourced in line with our sustainability policy.

Designed for easy self-assembly, the 6 Ft. W x 4 Ft. D Power Pent Garden Shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

Shed was fairly easy to put together i did run mastic on external joins just for extra waterproofing but very happy with the quality , I built it myself in 4 hours with no dramas. Peter. Sat Jan 17 2026

Designed for easy self-assembly, the overlap double door power pent wooden shed can be installed how you want by allowing you to choose whether to place the doors on the high or low side. All sheds have high-grade premium quality timber throughout including roof and floor. No chipboard or OSB. The wooden sheds use 10mm extra thick rustic looking overlap cladding responsibly sourced in line with our sustainability policy.

Designed for easy self-assembly, the shed can be installed how you want by allowing you to choose whether to place the doors on the high or low side. All sheds have high-grade premium quality timber throughout including the roof and floor No chipboard or OSB. Their wooden sheds use 10mm extra thick rustic-looking overlap cladding responsibly sourced in line with our sustainability policy.

Designed for easy self-assembly, the 6 Ft. W x 3 Ft. D Power Pent Bike Shed is the ideal storage shed for bikes, garden furniture, and other garden belongings. The shed comes with wide double doors to provide good access for storage. This is a premium quality bike shed with high-grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a storage shed that will last for many years.

Doing this alone in the wind was tricky but the kit went together well. Needs a few more of the 70mm screws when sent with the base kit. The ship lap on the door wings was a bit gappy so it doesn’t quite line up, and I’d prefer coach bolts for the hinges to make it a bit more secure, but it does the job. Roger. Wed Mar 18 2026

Designed for easy self-assembly, the 4 Ft. W x 4 Ft. D Power Apex Double Door Garden Shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

I ordered this over Christmas and it arrived early It was shipped on a pallet as stated relly well packed I also ordered the base I was shocked at how many piece arrived but it was easy to put together It's a two man job at times but very easy if you follow the instructions and videos One problem I had could not find a plan for my base or floor sizes It's up and been tested the last few days as we have a storm at the moment so far so good 👍. Dan. Limerick. Mon Jan 26 2026

Designed for easy self-assembly, the 6 Ft. W x 4 Ft. D Power Pent Double Door Garden Shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

Shed was fairly easy to put together i did run mastic on external joins just for extra waterproofing but very happy with the quality , I built it myself in 4 hours with no dramas. Peter. Sat Jan 17 2026

Designed for easy self-assembly, the overlap windowless double door power pent wooden shed can be installed how you want by allowing you to choose whether to place the doors on the high or low side. All sheds have high-grade premium quality timber throughout including roof and floor. No chipboard or OSB. The wooden sheds use 10mm extra thick rustic looking overlap cladding responsibly sourced in line with our sustainability policy.

Designed for easy self-assembly, the 6Ft. W x 4 Ft. D Power pent potting shed with double doors can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high-grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

Excellent kit to build a potting shed. Lots of info with the book or online.. Anonymous. North Lincolnshire. Thu Sep 18 2025

Designed for easy self-assembly, the 6x4 Power Premium Pent Double Door Garden Shed can be installed according to your preferences, with the flexibility to position the door and windows (if applicable) wherever you desire. The door can be effortlessly placed on any side of the building during assembly, granting you full control over its layout. Crafted to premium standards, this shed boasts features like a 5-pin cylinder lock, robust 58x44mm framing that can double up to 58x88mm, and toughened safety glass (if ordered with windows). Each structure is constructed from high-grade timber responsibly sourced from forests, treated with pressure to enhance resistance against decay, insects, and the elements. Furthermore, our proprietary wood preserver formula, enriched with a wax additive, ensures long-lasting protection, allowing you to enjoy your garden building for up to a year without the need for re-treatment.

Extremely happy with my new shed!! Delivery was accurate to when they said they would come, quality all really good, and an enjoyable experience to construct. Instructions could do with a little more detail, but the YouTube video was very informative. Would definitely recommend. 👍. Rwhite. Yate, Bristol. Tue Mar 17 2026

Designed for easy self-assembly, the 6x4 Power Premium Apex Garden Shed can be installed according to your preferences, with the flexibility to position the door and windows (if applicable) wherever you desire. The door can be effortlessly placed on any side of the building during assembly, granting you full control over its layout. Crafted to premium standards, this shed boasts features like a 5-pin cylinder lock, robust 58x44mm framing that can double up to 58x88mm, and toughened safety glass (if ordered with windows). Each structure is constructed from high-grade timber responsibly sourced from forests, treated with pressure to enhance resistance against decay, insects, and the elements. Furthermore, our proprietary wood preserver formula, enriched with a wax additive, ensures long-lasting protection, allowing you to enjoy your garden building for up to a year without the need for re-treatment.

Bought a premium apex shed 10x6... OMG... it's epic! The build quality is superb... panels well braced, and the security lock... anyone trying to get in will need to go through the wall as they aint getting in through the door! Super pleased with the quality of the product. Absolutely well worth the buy. 5*. Jjd. Ayrshire. Fri Sep 05 2025

This garden shed can be installed, how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you're assembling the building. This is a premium quality shed with high-grade timber sourced from the finest Scandinavian forests.

Shed was fairly easy to put together i did run mastic on external joins just for extra waterproofing but very happy with the quality , I built it myself in 4 hours with no dramas. Peter. Sat Jan 17 2026

Designed for easy self-assembly, the 4 Ft. W x 6 Ft. D Power Pent Double Door Garden Shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

Shed was fairly easy to put together i did run mastic on external joins just for extra waterproofing but very happy with the quality , I built it myself in 4 hours with no dramas. Peter. Sat Jan 17 2026

Designed for easy self-assembly, this pent security garden shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high-grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

It arrived on time, exactly as expected within days of order. Local time was nearly 3 months. All the parts were there and full instructions on how to erect it. It looks really good. Every man needs a shed!. Dr. Tue Nov 19 2024

Designed for easy self-assembly, the 6Ft. W x 4 Ft. D Power Apex Potting Shed with Double Doors can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

We bought this shed as we liked the look of the glass pains, it is well made , and looks fabulous.. Anonymous. Dorset. Sat Jun 07 2025

Designed for easy self-assembly, the 6x4 Power Premium Apex Double Door Garden Shed can be installed according to your preferences, with the flexibility to position the door and windows (if applicable) wherever you desire. The door can be effortlessly placed on any side of the building during assembly, granting you full control over its layout. Crafted to premium standards, this shed boasts features like a 5-pin cylinder lock, robust 58x44mm framing that can double up to 58x88mm, and toughened safety glass (if ordered with windows). Each structure is constructed from high-grade timber responsibly sourced from forests, treated with pressure to enhance resistance against decay, insects, and the elements. Furthermore, our proprietary wood preserver formula, enriched with a wax additive, ensures long-lasting protection, allowing you to enjoy your garden building for up to a year without the need for re-treatment.

Bought a premium apex shed 10x6... OMG... it's epic! The build quality is superb... panels well braced, and the security lock... anyone trying to get in will need to go through the wall as they aint getting in through the door! Super pleased with the quality of the product. Absolutely well worth the buy. 5*. Jjd. Ayrshire. Fri Sep 05 2025

Designed for easy self-assembly. Overlap windowless power apex wooden shed can be installed how you want by allowing you to choose whether to place the doors on the high or low side. All sheds have high-grade premium quality timber throughout including roof and floor No chipboard or OSB. Our wooden sheds use 10mm extra thick rustic looking overlap cladding responsibly sourced in line with our sustainability policy.

Designed for easy self-assembly, the shed can be installed how you want by allowing you to choose whether to place the doors on the high or low side. All sheds have high-grade premium quality timber throughout including roof and floor No chipboard or OSB. Their wooden sheds use 10mm extra thick rustic looking overlap cladding responsibly sourced in line with our sustainability policy.

Designed for easy self-assembly, the 6x4 Power Premium Pent Windowless Double Door Garden Shed can be installed according to your preferences, with the flexibility to position the door and windows (if applicable) wherever you desire. The door can be effortlessly placed on any side of the building during assembly, granting you full control over its layout. Crafted to premium standards, this shed boasts features like a 5-pin cylinder lock, robust 58x44mm framing that can double up to 58x88mm, and toughened safety glass (if ordered with windows). Each structure is constructed from high-grade timber responsibly sourced from forests, treated with pressure to enhance resistance against decay, insects, and the elements. Furthermore, our proprietary wood preserver formula, enriched with a wax additive, ensures long-lasting protection, allowing you to enjoy your garden building for up to a year without the need for re-treatment.

Extremely happy with my new shed!! Delivery was accurate to when they said they would come, quality all really good, and an enjoyable experience to construct. Instructions could do with a little more detail, but the YouTube video was very informative. Would definitely recommend. 👍. Rwhite. Yate, Bristol. Tue Mar 17 2026

Designed for easy self-assembly, the 4 Ft. W x 6 Ft. D Power Windowless Apex Double Door Garden Shed can be installed how you want by allowing you to place the door on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

I ordered this over Christmas and it arrived early It was shipped on a pallet as stated relly well packed I also ordered the base I was shocked at how many piece arrived but it was easy to put together It's a two man job at times but very easy if you follow the instructions and videos One problem I had could not find a plan for my base or floor sizes It's up and been tested the last few days as we have a storm at the moment so far so good 👍. Dan. Limerick. Mon Jan 26 2026

Designed for easy self-assembly, this pent double door security garden shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high-grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

The shed arrived screwed on to a pallet as described, it did take me 30+ minutes to unscrew it and put all the panels together ready for building. The construction of the shed (7x5) was fairly easy and the structure felt strong and good quality, I will say it did take 2 people almost a whole day to get it up. The shed came with one key which we've recently lost so needed to contact customer care who were extremely helpful and happy to send us out a new key first class at a tiny fee. We've had the shed 10 months now and it still looks great and is water tight.. Shannon. Mon Mar 11 2024

Designed for easy self-assembly, the 6x4 Power Premium Apex Windowless Garden Shed can be installed according to your preferences, with the flexibility to position the door and windows (if applicable) wherever you desire. The door can be effortlessly placed on any side of the building during assembly, granting you full control over its layout. Crafted to premium standards, this shed boasts features like a 5-pin cylinder lock, robust 58x44mm framing that can double up to 58x88mm, and toughened safety glass (if ordered with windows). Each structure is constructed from high-grade timber responsibly sourced from forests, treated with pressure to enhance resistance against decay, insects, and the elements. Furthermore, our proprietary wood preserver formula, enriched with a wax additive, ensures long-lasting protection, allowing you to enjoy your garden building for up to a year without the need for re-treatment.

Brilliant company to deal with! The premium shed is fantastic quality, it was extremely well packed with plenty of fixings, and easy to follow comprehensive instructions. Highly recommended!. Steve61. Cumbria. Sun Aug 10 2025

Designed for easy self-assembly, the 6x4 Power Premium Pent Garden Shed can be installed according to your preferences, with the flexibility to position the door and windows (if applicable) wherever you desire. The door can be effortlessly placed on any side of the building during assembly, granting you full control over its layout. Crafted to premium standards, this shed boasts features like a 5-pin cylinder lock, robust 58x44mm framing that can double up to 58x88mm, and toughened safety glass (if ordered with windows). Each structure is constructed from high-grade timber responsibly sourced from forests, treated with pressure to enhance resistance against decay, insects, and the elements. Furthermore, our proprietary wood preserver formula, enriched with a wax additive, ensures long-lasting protection, allowing you to enjoy your garden building for up to a year without the need for re-treatment.

Extremely happy with my new shed!! Delivery was accurate to when they said they would come, quality all really good, and an enjoyable experience to construct. Instructions could do with a little more detail, but the YouTube video was very informative. Would definitely recommend. 👍. Rwhite. Yate, Bristol. Tue Mar 17 2026

Designed for easy self-assembly, the Power Windowless Apex Garden Shed can be installed how you want by allowing you to place the door on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

I have not yet built the shed, but have painted the shed and am very pleased with it's quality. The instructions aren't clear as to which pieces are which, so imagine it will take some building, but the quality appears to be high.. Alan. Nantwich, GB. Mon Apr 13 2020

Designed for easy self-assembly, the 6x4 Power Premium Pent Windowless Garden Shed can be installed according to your preferences, with the flexibility to position the door and windows (if applicable) wherever you desire. The door can be effortlessly placed on any side of the building during assembly, granting you full control over its layout. Crafted to premium standards, this shed boasts features like a 5-pin cylinder lock, robust 58x44mm framing that can double up to 58x88mm, and toughened safety glass (if ordered with windows). Each structure is constructed from high-grade timber responsibly sourced from forests, treated with pressure to enhance resistance against decay, insects, and the elements. Furthermore, our proprietary wood preserver formula, enriched with a wax additive, ensures long-lasting protection, allowing you to enjoy your garden building for up to a year without the need for re-treatment.

Extremely happy with my new shed!! Delivery was accurate to when they said they would come, quality all really good, and an enjoyable experience to construct. Instructions could do with a little more detail, but the YouTube video was very informative. Would definitely recommend. 👍. Rwhite. Yate, Bristol. Tue Mar 17 2026

4ft. x 6ft.

This modular pent is shed is extremely versatile, due to the fact that the side panels can be assembled in any order. Meaning that the door, and windows can be placed on any side and the roof can slope either way to suit your needs. The shed is manufactured from 12mm shiplap tongue & groove timber, which has been pressure treated and is brown in colour. Every part of the shed, including the roof & floor is pressure treated and guarantees the timber against rot and insect for 15 years, so you can be assured that the shed will last the test time. The shed is supplied with a tongue & groove floor & roof as standard. Both are also made from 12mm timber, ensuring good strength and durability. If you choose a shed with windows, the windows will be 2mm perspex. The door is braced and ledged for extra strength and rigidity. A rim lock and key is supplied, to allow the shed to be locked and secured when not in use. The door lock, hinges, turn button and handle are made from galvanized steel so are protected from rust. All fixtures and fittings are supplied, including an assembly guide. Depending on the size of the shed, it should not take more than a few hours to assemble. Two persons is recommended to complete the assembly.

Designed for easy self-assembly, this double door security garden shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you are assembling the building. This is a premium quality shed with high-grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

Like a number of other reviewers, I found Powersheds after being let down by poor service and false promises from another company. I rarely leave reviews but having struggled to find a reliable place to buy a new shed, I thought I would try and help anyone else in the same situation. I can honestly say I wouldn't hesitate to recommend Powersheds. Fantastic service, did everything they said they would, when they said they would, and always with a prompt response to phone and emails. My builders, who have done work for me for more than 10 years, put this together with no issues at all. They commented on the quality of they shed, noting they would be recommending Powersheds to any other customers who might ask their advice.. Sam. London. Mon Jul 07 2025

Designed for easy self-assembly, the 6x4 Power Premium Apex Windowless Double Door Garden Shed can be installed according to your preferences, with the flexibility to position the door and windows (if applicable) wherever you desire. The door can be effortlessly placed on any side of the building during assembly, granting you full control over its layout. Crafted to premium standards, this shed boasts features like a 5-pin cylinder lock, robust 58x44mm framing that can double up to 58x88mm, and toughened safety glass (if ordered with windows). Each structure is constructed from high-grade timber responsibly sourced from forests, treated with pressure to enhance resistance against decay, insects, and the elements. Furthermore, our proprietary wood preserver formula, enriched with a wax additive, ensures long-lasting protection, allowing you to enjoy your garden building for up to a year without the need for re-treatment.

Brilliant company to deal with! The premium shed is fantastic quality, it was extremely well packed with plenty of fixings, and easy to follow comprehensive instructions. Highly recommended!. Steve61. Cumbria. Sun Aug 10 2025

This standard apex shed has a classic design with an apex felted roof, making it suitable for any garden. Having no windows makes this extremely secure. The pressure treated, tantalized, ship-lap T and G cladding provides excellent weatherproof joints and reduces the need of further treatment, making this shed easy to maintain. The braced door can be hung either left or right handed to suit. The shed arrives in pre-assembled panels ready for construction.

This modular pent is shed is extremely versatile, due to the fact that the side panels can be assembled in any order. Meaning that the door, and windows can be placed on any side and the roof can slope either way to suit your needs. The shed is manufactured from 12mm shiplap tongue & groove timber, which has been pressure treated and is brown in colour. Every part of the shed, including the roof & floor is pressure treated and guarantees the timber against rot and insect for 15 years, so you can be assured that the shed will last the test time. The shed is supplied with a tongue & groove floor & roof as standard. Both are also made from 12mm timber, ensuring good strength and durability. If you choose a shed with windows, the windows will be 2mm perspex. The door is braced and ledged for extra strength and rigidity. A rim lock and key is supplied, to allow the shed to be locked and secured when not in use. The door lock, hinges, turn button and handle are made from galvanized steel so are protected from rust. All fixtures and fittings are supplied, including an assembly guide. Depending on the size of the shed, it should not take more than a few hours to assemble. Two persons is recommended to complete the assembly.

The evolutionary Darwin composite shed is the perfect design if you desire the look of a wooden shed but with all the benefits of resin. With a durable double wall construction, weather resistant and no maintenance the Darwin shed is built to last. Tongue and groove panels allow easy assembly in just 1-2 hours and due to its new compact packaging, you can fit the Darwin in your car if you prefer buying from store to get your shed built and all of your garden accessories and tools tucked away on the same day! With a fixed window, floor panel, built in ventilation for ample airflow and a sturdy lockable handle you can be sure your belongings will stay safe season after season.

A great shed , easy to assemble , has high ceiling and is spacious. Hooman. Reading, GB. Tue May 13 2025

Protect your belongings with our robust and adaptable storage shed! Featuring a strong and rust-resistant galvanized steel frame, its wind-resistant design guarantees stability in harsh weather. The durable, high-density PE fabric offers excellent protection, with a fully waterproof construction ensuring your items stay dry, safeguarding everything from tools to bikes from moisture damage. Its versatility means it is perfect for various uses – a tool shed, a bike shelter, or even a temporary refuge during outdoor adventures. Enjoy flexible and ample space for all your storage needs.

Grey

This 4.6x6FT Anthracite storage shed combines modern design with durable construction, featuring color-coated steel panels, a galvanized frame, and reinforced rust-resistant doors. Its spacious interior is ideal for tools, outdoor equipment, bikes, and DIY supplies, and can even serve as a garden workshop or potting station – a smart solution for all your backyard needs.

Designed for easy self-assembly, the 8 Ft. W x 6 Ft. D Power Pent Windowless Garden Shed can be installed how you want by allowing you to place the door in any position while assembling the building. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

Good sturdy shed. Not cheap but decent quality.. Amanda. Plymouth, . Mon Dec 16 2019

Designed for easy self-assembly, the 6Ft. W x 4 Ft. D Power Pent Potting Shed can be installed how you want by allowing you to place the door and windows in any position. The door can be placed in any position on any side, which you can choose as you’re assembling the building. This is a premium quality shed with high grade timber sourced from the finest Scandinavian forests. It is tongue and groove throughout giving you a garden shed which will last for many years.

Excellent kit to build a potting shed. Lots of info with the book or online.. Anonymous. North Lincolnshire. Thu Sep 18 2025

Designed for easy self-assembly, the overlap windowless double door power apex wooden shed can be installed how you want by allowing you to choose whether to place the doors on the high or low side. All sheds have high-grade premium quality timber throughout including roof and floor. No chipboard or OSB. The wooden sheds use 10mm extra thick rustic looking overlap cladding responsibly sourced in line with our sustainability policy.

An ideal shed for any medium sized garden, the Rowlinson 6x4 Overlap Shed will store all of your garden supplies safely and securely. Its traditional apex roof provides plenty of headroom, whilst double roof supports provide extra strength.