Steel Portal Frame Buildings Nationwide are delivered with fully galvanised lightweight steel sections, engineered to BS 5950 and EN 1993.
G Jones Construction Ltd designs, manufactures and installs durable portal frame systems tailored to loadings, spans, foundations and individual project requirements.
Portal frame buildings use rigid steel connections between columns and rafters to achieve long, unobstructed internal spans. Load transfer occurs through tapered or uniform rafters, with purlins and side rails providing restraint and distributing wind, snow and imposed loads across the frame. Additionally, these buildings are available as traditional hot-rolled frames and the newer cold-rolled portal frames.
We control design, manufacture, erection, commissioning and handover. Each building is designed to comply with current Building Regulations and relevant standards, including BS 5950 and ISO EN 1993. We provide full structural calculations, heat loss calculations where required, and foundation design based on site conditions and structural loading.
Foundations use full baseplates and substantial expanding concrete anchors to resist wind, snow and operational loads. Lightweight galvanised steel sections and engineered fixings deliver a durable structural frame for industrial and commercial applications, forming the basis of Steel Portal Frame Buildings Nationwide.
With extensive experience in structural steelwork, we manufacture buildings using fully galvanised lightweight steel sections and high-quality cladding systems, including insulated, plastisol-coated and single-skin panels.
Steel Portal Frame Buildings suit industrial, commercial, storage, and bespoke applications across the UK.
Designed for livestock housing, grain stores and general farm use, these structures benefit from clear internal spans, durable cladding and ventilation options.
Our team designs frames to withstand exposure, machinery access and daily operational requirements.
Ideal for workshops and manufacturing facilities, industrial units use galvanised steel frames with optional insulation and loading provisions.
Clear internal height supports equipment, services and overhead systems essential for modern production environments.
Retail units, trade counters and showrooms require flexible layouts and consistent presentation.
Our frames support glazing, signage, insulated walling and weather protection, creating adaptable spaces for customer access, product display and service operations.
Used for warehousing, logistics and general storage, these buildings deliver unobstructed floor space for racking and vehicle movement.
Structural stability, secure cladding and optional rooflights create controlled environments suitable for varied goods.
For unique site or operational requirements, we configure spans, frame geometry, insulation, door sets and cladding to create purpose-built structures.
This approach supports complex layouts, specialist equipment and long-term adaptability.
Fully galvanised lightweight steel sections give our buildings long service life, low maintenance demands and consistent structural performance. We engineer every frame with eaves haunches, ridge plates and integral wind bracing to maintain stability under wind, snow and operational loadings, and we provide full structural calculations as standard.
We also supply L2A-compliant insulation, fire-rated walling, certified rooflights, detailed weather protection, foam fillers, secure personnel doors, roller shutters, windows and optional mezzanine floors. This ensures every Steel Portal Frame Buildings Nationwide project we deliver meets UK requirements and remains adaptable for future use.
Lightweight frames reduce structural load, allowing simpler foundations and lower groundwork costs.
Compliant rooflights, fire-rated walls and engineered fixings improve building safety performance.
Foam fillers and perimeter drips minimise drafts, water ingress and heat loss reliably under demanding weather and exposure.
Plastisol-coated gutters and downpipes ensure reliable water management and long-term weather resistance.
To prepare an accurate quote, we require the following:
These details allow us to confirm spans, loadings, fixings and manufacturing requirements efficiently.
If you’re planning Steel Portal Frame Buildings and need clarity, these answers cover the most common points we’re asked about. If anything else comes to mind, just reach out, and we’ll happily talk you through your options.
Project duration depends on your specification, site access, ground conditions and how quickly measurements and design details are supplied.
After confirming dimensions, use and openings, structural calculations are prepared, then fabrication begins. Installation typically progresses in scheduled stages, including frame erection, cladding, doors, insulation and finishing, ensuring each phase aligns with load paths, bracing requirements and environmental conditions.
Most portal frame buildings require planning consent unless they fall under specific allowances, such as certain agricultural exemptions. These depend on building size, proposed use and location.
We assist by providing elevations, structural data, load calculations, cladding specifications and footprint details so planning officers can review compliance efficiently without holding up fabrication or delivery.
Foundation requirements depend on soil type, building width, exposure and loading. Lightweight galvanised frames reduce overall bearing demands, but accurate base preparation remains essential.
We supply full baseplate dimensions, anchor layouts, fixing details, eaves and ridge loadings, and the minimum concrete specifications so your groundwork team can construct a compatible foundation that manages uplift, shear and compression forces safely.
Yes, options include anti-condensation single-skin systems, insulated composite roof and wall panels, or full L2A-compliant specifications.
We advise on thermal performance, ventilation, vapour control, fire-rated walling, roof-light compliance, and cladding combinations that meet regulatory requirements while supporting the intended use – whether agricultural, commercial or industrial. Each specification is engineered according to building use and location.
Maintenance is minimal due to galvanised steel frames and durable plastisol-coated cladding. Periodic checks should focus on gutters, downpipes, fixings in high-exposure areas, and the operation of personnel and roller doors.
Weather drips, foam fillers and secure flashings reduce the risk of moisture ingress, helping preserve insulation performance and interior conditions across long-term use.
Steel Portal Frame Buildings Nationwide allow for extensions or internal changes due to their modular engineering. Additional bays, new openings, roller shutters, windows or mezzanine floors can often be incorporated while retaining structural integrity.
We assess bracing positions, column load paths, connection capacity and foundation suitability before confirming what modifications are feasible without compromising performance.
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G Jones Construction Ltd is committed to ensuring that your privacy is protected. Should we ask you to provide certain information by which you can be identified when using this website, then you can be assured that it will only be used in accordance with this privacy statement.
G Jones Construction Ltd may change this policy from time to time by updating this page. You should check this page from time to time to ensure that you are happy with any changes. This policy is effective from 19/02/24.
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You may request details of personal information which we hold about you under the Data Protection Act 1998. A small fee will be payable. If you would like a copy of the information held on you please write to Unit 15, Vastre Industrial Estate, SY16 1RB, Newtown.
If you believe that any information we are holding on you is incorrect or incomplete, please write to or email us as soon as possible at the above address. We will promptly correct any information found to be incorrect.
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