SMW Range

Introduction  The SMW (Standard Metal Window) "F" series is the original steel window section which has been manufactured since the 1920's and installed into thousands of properties throughout the world. It is still widely used for replacing existing SMW windows, especially those installed prior to 1948 when galvanising was first introduced.  Windows prior to this are susceptible to rusting and where they occur in Conservation Areas or similar this range can offer an exact match for the existing, albeit in a single glazed format only which will not meet the requirement of Part L of the Building Regulations (and for which approval will be required from the Local Authority Building Control department and Conservation Officer).  The range itself is an established domestic steel window offering unrivalled elegance through its small and profiled sightlines.  This coupled with its relatively high performance figures and the natural strength and security steel offers gives a product that has been in production for the past 80+ years and is still in demand today.  Of course, there have been advances in the windows such as galvanising, weatherstripping and factory powder coating but none of these have affected in any way the sightlines or basic steel section profiles.  Available in a vast standard size range (for lowest pricing) or purpose made sizes.  Available in single glazed format only (refer to EB14 and EB24 ranges for double glazed replacements for this product).  A large range of quality modern or traditional ironmongery can be fitted and the system includes many opening window types which are detailed in the below table.  This range is suitable for 1/2 hour integrity fire rated applications using wired glass (contact our technical department with your enquiry for full details).
 
Specification  Windows and doors will be manufactured from the SMW range of purpose-made hot-rolled mild steel section and generally manufactured in accordance with procedures laid down in BS.6510:1984. All frames will have welded corners and be flat and square and within normal manufacturing dimensional tolerances of +/- 2mm. Intermediate glazing bars will be hot tenon riveted.
 
Galvanizing  All windows and doors, including any steel attachments, coupling members or ancillary items, will be hot-dip galvanised after manufacture to BS.729:1971 (1986), with a minimum coating weight of 460gsm. 
 
Polyester Powder Coating (optional)    Galvanised windows and doors can be polyester powder coated using Syntha-Pulvin powder. The powder will be in accordance with BS.6497:1984, to an average thickness of at least 60 microns on all significant surfaces.  Colour of polyester powder coated elements will be : any single standard RAL reference colour.
 
Weatherstripping  Ventilators will be fully weatherstripped with black coloured dual contact ethylene propylene complying with BS.4255:part 1:1986, secured into extruded aluminium channels which are securely fixed to opening frames and are concealed when the window is shut.
 
Putty Glazing  All glazing will be secured to steel frames using glazing sprigs. Glass to be solid bedded in, and back / face puttied with non-setting glazing metal casement putty. Galvanised only frames will be supplied with natural colour putty for site painting by others (if required). 2 weeks should be allowed after glazing has taken place to allow a skin to form a semi-rigid base for painting. Polyester powder coated frames will be glazed with an appropriate coloured putty subject to availability (black or white only). 
 
Glass  All single glass will be between 4mm and 10mm thick. 
 
Heat Loss  SMW range single glazed windows have a typical "u" value of 5.7 W/m2K.  SMW range does not comply with the revised Part L of the Building Regulations 1st April 2002 in respect of the Conservation of Fuel and Power where W40, EB14 or EB24 sections should be used instead.
 
Please note that this is only a summary of the range and that all technical and specification details, photographs etc. can be produced upon request.
 

Frame Type (*)	(Width) x (Height) x max. perimeter (mm)	Air / Water / Wind / Exposure Category (Pa)	(*) o/o=open out Where enhanced safety, security, thermal or weather performance is required - tighter limitations are required.  2 locking points (in lieu of 1) are required to opening lights over 1200mm wide and/or 1500mm high.  Our office would be pleased to advise on windows outside of stated limits.  Test pressure class and exposure category are of typical types and sizes when tested to BS 5368 and classified as BS 6375:Part1.
Fixed Light Side Hung o/o Top Hung o/o Single o/o Door Double o/o Door	(300-1800) x (300-1800) x 7200 (300-600) x (300-1300) x 3800 (300-1800) x (300-1300) x 4800 (475-900) x (2000-2100) x 6000 (950-1250) x (2000-2100) x 6600	600 / 300 / 2400 / 2400 spl 300 / 200 / 2000 / 2000 300 / 200 / 2000 / 2000 n/av / n/av / n/av / n/av n/av / n/av / n/av / n/av