Steel Framed Buildings
Steel framed buildings are growing in popularity as home and business owners strive for the solution to additional living and working space. A faster, more affordable approach, these lightweight constructions offer almost endless design opportunities.
At PermaRoof UK, we’re here to help your project run smoothly, regardless of size, scope and design. Through PermaRoom, we offer expert advice, off-the-shelf steel framed buildings or free precision CAD design for a highly customised finish. Fast and easy to erect, the perfect solution.
On this page:
Use the links below to jump straight to the information you need.
- Home projects
- Larger projects
- CAD design service
- Benefits
- Steel vs. timber
- Garden office
- Guest bedrooms
- More projects
- Design
- Ground prep
- Cost and value
- DIY or professional install?
- Brochures and guides
- Buy online
- FAQs
- Why PermaRoof?
High quality steel framed buildings
At PermaGroup, we’re dedicated to helping you increase the value, beauty and scope of your home. Create elegant outdoor living spaces for a wide range of uses with our lightweight and affordable steel framed buildings. We offer a wide range of off-the-shelf options or provide a fully bespoke design service with our in-house CAD design team.
In our online store you’ll find standard sized complete steel frames, ready to erect and finish to your taste and style. Suitable for DIY and straightforward to erect in around an hour for a skilled and competent DIY team. We can help with the insulation, waterproofing and skylights, edge trim and more, all available online with fast delivery across the UK.
- Range of high quality steel frames
- Rubber roofing systems
- P100 Liquid roofing
- Skylights and trim
- Cover board and insulation
Lightweight frames for all types of project
Manufactured from galvanised steel, our frames are precision engineered to ensure fast, accurate erection. Using our custom CAD design service means that you can tailor your build to suit very specific needs and for an almost limitless variety of uses:
- Garden room
- Home gym or bar and spa
- Guest or teen bedroom
- Home office or workshop
- Holiday rental
Getting the project right, first time
The ultimate success of any project relies on careful planning and specification to find the right system and approach. If you’re planning a new living or workspace, we’re here to help every step of the way. Whether you’re building a family garden room, a granny annexe or workshop, talk to us or browse our range of steel framed buildings. We’ll help you get the project right – first time.
We offer expert advice and product guidance, tips and buying advice specific to your project. Buy steel framed buildings off-the-shelf or create unique tailoring in consultation with our in-house expert CAD design team. We’ll support your DIY build with free install guides or we’ll connect you with a reliable, local professional to get the job done. The possibilities are endless – let’s get started.
Steel Framed Buildings at PermaRoof

Lightweight Frames for Home Projects
Using steel frames to build additional garden rooms at home offers limitless potential. Off the shelf frames or highly customised design options available.
Whether you’re planning a garden office or retreat, home bar or studio bedroom, we have a solution for you. Full support for all your home projects.

PermaRoom steel frames can bring the flexibility you need for larger projects and custom builds. Use our free CAD design service and let us show you the possibilities.
Find out more about how steel framed buildings can accommodate storage and workshop needs, a classic vehicle collection or become a holiday home.


PermaRoof’s sister company is PermaRoom, dedicated to helping clients increase and realise the value of their homes by creating elegant outdoor spaces for almost any use.
Whether you need your space for work, rest or play, these innovative garden buildings can give you the flexibility you’re looking for.
Steel Frame Buildings and Products to Buy Online Today
Steel Frame Building Buyers Guide
What are steel framed buildings?
By definition, steel framed buildings are constructions that use a framework model of vertical steel columns and horizontal beams. These structures are typically built in a grid format, that supports the walls and roofing, sometimes incorporating floor joists. Most modern constructions are manufactured from carbon steel and galvanised steel, with alloy and stainless steel typically used in harsh environments.
Not all steel framed buildings are alike in quality and this shows during the build process. Frames that are precision designed from the outset will fit together perfectly and simplify the build process for DIY or professional build, also providing higher tensile strength overall.

The benefits of a steel frame over timber or brick constructions
Using a steel frame brings a range of benefits to the modern homeowner looking for more space rather than moving to a new house. If you’ve considered a garden room project and looked at a timber or brick construction, you’ll already understand the budget and longevity limitations these bring. We’re here to show you a new approach:
Steel vs. timber
- Steel is one of the strongest materials used in the industry and is much stronger than timber
- Steel will not burn in a fire like a timber framed building will
- Steel does not rot or allow moisture to sink in, so you won’t have any unexpected guests!
- Our system allows us to install better insulation, meaning we can fully soundproof your rooms.
Durable and strong
- One of the strongest materials for construction, steel ensures a long-lasting, pest-resistant core building framework for your project. PermaRoom frames are precision manufactured from galvanised steel.
Cost effective
- Buying a steel frame can help to reduce the overall construction cost, especially compared to brick-built structures – incorporating both materials and labour time. Fast and straightforward, erection of the frame is well within the capabilities of a skilled DIY team of just two people.
Versatile for almost any use
- With a high degree of design flexibility, customised steel frames can be manufactured to suit any use. We sell both standard and bespoke steel frames, offering off-the-shelf or fully designed options. With a range of contemporary designs, these innovative garden buildings can transform your home and give it the flexibility it needs for your lifestyle.
Fast and efficient construction
- With the current housing crisis in the UK, fast, cost-efficient methods of construction are desperately needed. It is just one of the reasons that steel frame buildings have taken the home renovation market by storm.
Why use a PermaRoom steel framed building?

The latest in steel frame buildings offer a wide range of benefits for homeowners across the UK. If you’ve been considering a timber garden building or an extension to your home, think about how the longevity and performance of a galvanised steel frame could improve your plan:
- All frames are made from galvanised steel
- CAD design structures ensuring strength and durability
- Very quick install time, a typical garden building frame can be built in less than 60-minutes
- Nothing to rot or encumber any infestation of woodworm
- All sizes in stock and ready for same day collection
- Made from 60% recycled steel
- Fully recyclable
Steel Building Applications
The Possibilities are Endless

Garden office
Working from home is steadily rising in the UK and not just for the self-employed. More businesses and organisations offer remote working options too and this is driving a growing number of homeowners away from their dining tables and out into the garden to work without home distractions. Steel frames offer a fast and easy approach with off-the-shelf options. Find out more >
Garages and secure storage
Creating secure garage storage, whether to house a car or precious motorcycle collection is fast and cost effective with a steel framework from PermaRoom. Easily insulated and fully customisable, using a steel frame offers the flexibility you need to add monitoring alarm systems, dehumidifiers, climate control systems or any other technologies you might need. Find out more >


Family garden rooms
Garden rooms are popular in the UK and have many uses from entertainment areas, home gyms or . We stock lightweight, steel framed buildings and can help you from the ground-up. Buy off-the-shelf standard frames, fast and easy to erect or design your own with our free, in-house CAD design service. Find out more here or talk to the team today.
Guest and studio bedrooms
When you just really need an additional bedroom, perhaps for regular visitors, teens or even for rentals, a steel framed garden building could be the answer. Affordable, customisable, easy to buy and build and fully adaptable to a range of needs, they offer a private space for guests that is away from the family bustle. Add value to your home in more ways than one. Find out more >


Incorporating green roofing
Green roofs offer a beautiful, eco friendly way to top off any new home garden room project. Steel framed buildings are able to withstand the additional weight needed for these types of systems. The build, roof deck and waterproofing will require planning and careful consideration to ensure a cohesive, successful completion. Talk to our Green Roof team.
More Modular Building Projects
Planning and Considerations
All home improvement projects require careful planning and it is likely that you’ll need support on the major ones. We’re here to help with award-winning sales and customer support teams, providing project-specific expert advice, product guidance and installation support, whether you’re doing it yourself or looking for a reliable contractor.
When you’re scoping out the project and thinking about materials, considerations need to made right from the start:
Purpose, usage and design
- To guide your design choices, scope out your intended purpose for the space. Think carefully about factors such as required head height, site position according to the sun and weather to produce the design.

Local authority permission
- For a new build structure, such as a garage or garden room, it is highly likely that planning permission will be needed. In some cases and regions, your choice of materials could contribute to the likelihood of planning permission being granted without amendments or conditions in a new build. Local authority rules and criteria will differ, so a visit to the local planning department can be a wise move for homeowners. It can highlight both constraints and incentives in the use of certain materials, particularly insulation or eco roofing systems.
Ground preparations
- Bear in mind that ground preparations will be needed ahead of the erection of the steel frame. It is not usual for these types of constructions to require foundations or deep footings, a well laid, reinforced concrete pad will most certainly be needed. During ground preparations, it is a good time to run the required services, such as water supply, plumbing and electrics.
Roof build up
- For a full flat roof build-up, consideration needs to be made for insulation and ventilation. There are many types of insulation with varying thermal properties to suit the building needs and energy requirements. Ensure that there is adequate airflow to prevent condensation from forming, as this can lead to issues with mould or damp later.
- Some types of roofing design allow for insulation on the inside of the roof deck, while others may be installed above the roof deck and under the waterproofing system.

Location and weather
- In the UK, homeowners do consider the weather when planning major projects. This is both in terms of materials and products selection and installation. With frequent rain, for example, particular attention should be paid to flat roofing and waterproofing to make sure adequate runoff and drainage is in place. Placement of windows and door openings will allow for optimum use of natural light.
Cost vs. value
- When working on and setting a budget, long-term value will be important, in addition to maintenance costings for comparable materials. A steel structure may cost more than timber initially, but will typically last longer overall and be lighter on maintenance cost over the lifespan.
Building with a Steel Frame
DIY or professional build?
There are many skilled DIY homeowners willing to tackle some of the bigger home improvement projects and our range of steel framed buildings is perfect for this situation. Precision-designed and manufactured frames fit beautifully together and the skeleton can be commonly erected by a small DIY team in around an hour.
Finishing can be completed quickly with a clear design and the frames are easily insulated and boarded, again, because of precision engineering. We stock Resista insulation boards, skylights and roof waterproofing kits, all with simplified installation suitable for DIY.

Some homeowners planning new build projects may decide to engage a professional building company to handle the construction side of things. If you’re not confident in your DIY skills, then this may be the best approach to fully achieve everything you require from the building. You’ll need to work closely with professionals at every stage, so choose trades that are approachable, helpful and willing to follow your design brief within your requirements and budget.
We’re here to support you every step of the way if you decide to handle the waterproofing yourself or if DIY isn’t for you, a professional installer will be able to complete your project easily and quickly – it may not cost as much as you think…
In-house CAD design – limited only by imagination
PermaRoom steel framed buildings can be uniquely tailored using our expert in-house CAD design team. A completely free service, let the team work with you and bring your dream home space to life – way before you even level the ground.
Presented in 3D, we’ll show you around your new space first – using swatches to highlight your design brief. We’ll also make as many amendments as you wish, until we get it right – and you’re happy. We can manage your entire project in conjunction with local, reliable contractors, or we’ll support you as much as we can if you’re building it yourself.
Resources
The PermaRoof Resource library is packed with free information to help guide our trade and DIY customers through your projects using our systems and products. Download brochures and read useful articles, find video guides and installation manuals for waterproofing the roofing. If you can’t find what you’re looking for, give us a call and we’ll be glad to help.
Resources to download
| Title | Summary | Categories | File Type | Link | hf:doc_categories | hf:doc_author |
|---|---|---|---|---|---|---|
| Rhenofol CV Application Manual | Rhenofol CV/CG Application Manual | Installation | installation-manuals | holcim-fdt | ||
| PermaRoof Bond & Seal Sealant | PermaRoof Bond & Seal Sealant | Installation, Technical | installation-manuals technical | permagroup permaroof | ||
| PermaRoof Product Training Manual | PermaRoof Product Training Manual 2024 | Brochures, Installation | brochures installation-manuals | permaroof | ||
| SealEco RubberTop Fleece Installation Specification | The information in this manual is a guideline to provide sound waterproofing. The base for … | Installation | installation-manuals | sealeco | ||
| RubberCover Application Water Based Bonding Adhesive 2019 | RubberCover Application Water Based Bonding Adhesive 2019 | Installation | installation-manuals | firestone | ||
| SealEco RubberTop Premium Installation Manual | The information in this manual is a guideline to provide sound waterproofing. The base for … | Installation | installation-manuals | permaroof sealeco | ||
| PermaRoof Green Roof Installation Guide 2022 | This installation guide offers general, step-by-step methodology on how to install PermaRoof Green Roof Systems … | Installation | installation-manuals | permaroof | ||
| RubberGutter EPDM SA Installation Guidelines | RubberGutter EPDM SA Installation Guidelines | Installation | installation-manuals | firestone | ||
| PermaRoof PU Adhesive Technical Application and Information | PermaRoof PU Adhesive Technical Application and Information | Installation, Technical | installation-manuals technical | permaroof | ||
| Bonding Adhesive BA-2012 S TF Installation Guidelines | Bonding Adhesive BA-2012 S TF Installation Guidelines | Installation | installation-manuals | firestone | ||
| RubberCover Water Based Bonding Adhesive Installation Guidelines | RubberCover Water Based Bonding Adhesive Installation Guidelines | Installation | installation-manuals | firestone |
Resources to read online
What Other Products Does PermaGroup Offer? | Interview with Adrian Buttress
What Other Products Does PermaGroup Offer? With permanent solutions to age-old problems a long-term pledge, PermaGroup offers a wide range of high quality products. PermaFence, our permanent fencing system, PermaRoof and PermaRoof Commercial, PermaLawn artificial grass, PermaRoom steel framed buildings and much more. Watch our video, and head on
FRAMECAD End to End Animation
FRAMECAD End to End Animation Videos from PermaRoof UK.
Ready to Get Started?
It’s now time to get your garden room project underway. We stock everything you need in our online store and offer fast, UK wide delivery to help keep your project on track. We work with some of the biggest names in the construction industry, providing genuine, high performance branded systems, complete with technical certifications and manufacturer warranties.
The award-winning teams are on hand if you need assistance with your order, so please get in touch if we can help – try the PermaRoof UK way.
Steel Frame Buildings and Products to Buy Online Today
Frequently Asked Questions
PermaRoom and PermaRoof UK are both subsidiaries of the wider PermaGroup, as is our online PermaRoof Store. Other group companies include:
- The Skylight Company
- PermaRoof UK Commercial
- PermaKit – our EPDM Kit Builder App
- PermaLawn
Talk to the PermaRoof team and let us help you get your project off the ground. We can support you through every aspect of planning, design and construction and work with you every step of the way until you’re using your brand new space.
Give us a call today on 01773 608 839 and let’s get started.
Yes. Green roofing is soaring in popularity across the UK and your garden building is the perfect place to have one. We use EPDM roofing as standard for waterproofing your projects and this forms the perfect waterproofing layer for green roofs.
Find out more in the PermaRoof Green Roof Division.
We stock a range of garden rooms in all standard sizes and will process your order the same day for fast UK-wide delivery. Steel-framed buildings can also be prepared for same day collection by prior arrangement from our Derby headquarters.
Our in-house design consultants produce a range of 3D images of your garden building for you to approve or amend as many times as you need.
This service is provided free of charge.
Yes. Our system allows us to install better insulation, which means your rooms can be fully soundproofed.
The steel frames are straightforward and fast to erect and may be suitable for a competent, skilled and confident DIY team. To fully realise the long term benefits of these hard wearing structures, however, a professional installation is recommended.
Erection of the steel frame is an important part of the installation process, but any plumbing, electrics, waterproofing and indeed preparation of the area prior to installation should all be completed to a high standard. All building regulations must be adhered to and qualified, professional tradespeople will also provide guarantees and insurance. The design and manufacture of garden rooms from Permaroof mean that the installation process is fast and easy for experienced fitters, leading to reduced labour time and cost.
PermaRoof can connect you with local, reliable and recommended steel framed buildings installers for peace of mind. Talk to us about your projects, regardless of size.
It is always wise to contact your local authority planning department ahead of all works. In some cases, planning permission may not be needed. We provide all our clients with detailed plans and specifications suitable for planning applications and submissions.
It is possible to live all year round in a modular home. It will require services, such as water and drainage, a suitable residential electricity supply and plumbing, in addition to adequate insulation and heating for the colder months.
We offer expert advice at PermaRoom for all your home projects. Visit our home projects page to find out more here or call us today and let’s chat your project through.
The frame of the modular building is constructed in our factory setting and delivered to the customer in sections, ready to be assembled on site. The images depict assembled units for display purposes only.
We can connect our customers with specialist modular buildings installers to complete the construction or help you plan your project from the very start. Talk to us today.
Why Choose PermaRoof UK?
About PermaRoof
With an award-winning reputation for sales and customer service, you can be confident we’re a company that puts our customers first, whether you’re a trade counter searching for a reliable supplier, a professional flat roofer with a business to expand or a DIY enthusiast.
Our facility located in Derbyshire allows us to stock a significant amount of EPDM and we have the capacity for cutting hundreds of sheets per day. Centrally located in the Midlands, PermaRoof UK offers our reliable, fast delivery service via the company fleet across the country for most of our extensive range of flat roofing products.
Over the last few years, we have extended our range of products to not only flat roofing products, but products that solve further problems such as steel framed buildings, artificial grass, maintenance free metal fence system and other long term solutions.
Why buy from PermaRoof?
For over 20 years, we have been providing trade and DIY roofers with some of the most innovative, comprehensive solutions and systems. We are one of the premier importers of Elevate EPDM and as such, hold some of the largest stocks in the country at our Derby headquarters and distribution centre.
In addition to high performance roofing systems and innovative construction products, we also offer exceptional support, and our award-winning sales teams are knowledgeable and experienced. Talk to us if you need help with any aspect of your project, from choosing the right frame to getting it erected and finished.
Our resource library has an extensive range of free installation guides and video tutorials, product safety and technical data and useful guidance to help you through your projects. We also offer full planning and specification support to the commercial roofing sector via our dedicated PermaRoof UK Commercial division.
Get in touch today if you need help with your order or wish to talk your project through with an expert. Our online store operates 24/7/365 with superfast delivery across the UK. Many of our off-the-shelf steel framed buildings can be collected from our headquarters by prior arrangement only. We have adequate parking and turning space for large vehicles.
Further Reading
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Get in Touch
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Permaroof UK® Ltd
Unit 1
Westway
Cotes Park Industrial Estate
Alfreton
Derbyshire DE55 4QJ
Tel: 01773 608 839
Fax: 01773 608 408
Email: Click here
Registration No. 4109502
VAT No. 764 2785 00
Permaroof (UK) LTD
Opening Hours
Mon – Fri (8am / 5pm)
We are closed on bank holidays and we re-open the following working day at 8am. Feel free to send us your enquiry during these periods and we can get back to you.
CONTACT PERMAROOF UK
PermaRoof UK are on hand to answer any questions regarding our products, services or your order. We welcome enquiries from the trade, stockists and homeowners alike. Contact PermaRoof UK today using the below form and one of our experienced team members will be on hand to help you right away.
Permaroof UK® Ltd
Unit 1
Westway
Cotes Park Industrial Estate
Alfreton
Derbyshire DE55 4QJ
Tel: 01773 608 839
Fax: 01773 608 408
Email: Click here
Registration No. 4109502
VAT No. 764 2785 00
Permaroof (UK) LTD
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