Why Rubb Buildings



The Rubb Difference
We build structures to the highest quality specific to your geographical location






The hot-dipped galvanised steel structure of a Rubb building generally takes the form of a series of lattice tubular or box section steel frames at 3 to 7 metre centres. Tubular purlins span between each of the frames and provide the necessary support for the cladding. Each frame is composed of smaller more manageable sections, which bolt together on site. Buildings spanning up to 100m are available in any length. The steel framework is protected from corrosion by hot dip galvanizing. Galvanising is the process of metallurogically bonding a tough coating of zinc into the steel surface. Microscopic analysis shows that there is no demarcation line between the steel and zinc but a gradual transition through a series of zinc-iron alloys. The protected coating is fused into the metal and therefore will give much better protection than other coatings such as paint. Whereas protection by paint may have to be re-processed every 5 or 6 years, protection by galvanizing should last in excess of 30 years even in exterior usage in coastal environments. All structural steelwork is hot dip zinc galvanised to BS EN ISO 1461. Prior to galvanising, all surfaces are cleared of oil, grease, rust, and debris. An environment category C3 is typically adopted which achieves a minimum coating of 85μm. However, galvanising coating can be adapted to suit specific environments by request.





Rubb's hot dip galvanised steel provides consistent zinc finish on exposed and inside surfaces. Our buildings last longer because of this added protection. We get numerous enquiries for replacing non-galvanised steel structures that have corroded, especially in higher corrosive environments. Be wary of other building providers where steel framework is galvanized before fabrication or painted. This is more susceptible to corrosion. It is important to make sure the protection is sufficient for the location. Rubb can enhance the galvanising bond to suit marine or other corrosive environments.






Superior to our competition, Rubb buildings easily integrate with ventilation systems, windows and conventional doors.


  • Large open clear span, no center columns
  • Translucent roof allowing natural light thus saving energy
  • Continuous wall and roof thus no water or air infiltration
  • Relocatable or permanent
  • Flexible foundation design options
  • Can accommodate all service requirements




All buildings are clad with tough PVC impregnated polyester fabric. The sheets are sectioned in accordance with the length of the building and joined with special overlap joints. These joints are waterproof and able to withstand vibrations caused by high winds. The membrane is tensioned over the steel structure and anchored to the foundations. The quality fabric has a life expectancy of up to 25 years depending on environmental conditions. Moreover, due to ease of erection and attachment, the cladding can be replaced easily. Rubb buildings erected over 30 years ago still have their original cladding. The fabric is tested with respect to tensile strength, elongation, tearing strength, bursting strength, coating adhesion and resistance to flexing according to BS 3424. The fabric is flame retardant and self-extinguishing to BS 5438 Test 2B (test certificates are available on request).





Rubb structures are designed and manufactured to comply with all relevant standards and building codes. In accordance with building regulations, our structures are designed for a 50 year life span. Our buildings can be designed to suit all environmental factors anywhere in the world.


  • Building range products designed strictly to building code requirements
  • Minimum roof imposed load is 0.6kN/m² per BS6399-3 plus any customer specified load
  • Service loading to suit typical M&E requirements
  • Ground snow load capability per code specification up to 1.0kN/m² or above
  • Wind load capacity up to 150 mph gust or greater
  • Rubb structural framework is structurally independent of the membrane cladding and does not rely on the cladding to brace framing members
  • Experienced, qualified and responsible in-house design and engineering capability
  • Rubb engineers – 2 experienced fully chartered structural engineers with over 40years combined experience at Rubb





Rubb Buildings Ltd applies CE marking to any of our products which are covered by a manufacturing harmonised European Standard (hEN) or European Technical Assessments (ETA). CE marking enables Rubb Buildings Ltd’s products to be placed legally on the market in any EU Member State and declares compliance with all applicable European Directives and Regulations.


CE marking indicates that a product is consistent with its Declaration of Performance (D.o.P), as made by Rubb Buildings Ltd or its suppliers. The declaration will vary according to the particular technical specification covering the product. By making a D.o.P, Rubb Buildings Ltd and its suppliers are assuming legal responsibility for the conformity of the construction product with its declared performance. The information contained within any D.o.P is produced and handed over with the Building O&M Manual.





  • Rubb buildings have low maintenance costs over time; no corrosion and repairs are inexpensive. We will gladly provide documentation.
  • Our buildings have stood the test of time.