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TT4 Light Duty Stainless Steel Cavity Wall Ties | Tangle Free | BS EN845 | BS EN846 | Suppliers UK


The unique tangle free design of Tec Ties Type 4 Light Duty Tie offers a practical and cost effective solution for masonry cavity walls in box form domestic dwellings of up to two storeys or a maximum 10m in height. Fully tested to BS EN846-5:2000 the ties meet the requirements of BS EN 845-1:2003 and DD140: Part 2. They will also meet the requirements of Part E of the Building Regulations for a Type A in party walls of any height.

tt4 diagram

building diagram
part_e_logo
 nsbc logo

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Unique Design Advantages
• Tangle Free
• Supplied in bundles - practical benefits for the bricklayer
• Safety on site
• No Boxes - No packaging waste
• Better Storage particularly during inclement weather

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Technical Information

Size Cavity Width Product Code
200mm 50mm to 75mm TT4 200
225mm 76mm to 100mm TT4 225
250mm 101mm to 125mm TT4 250

Classification Field of use
Type of structure and frequency of tying 		Geographical location
Type 4. (Masonry: Light duty). Suitable only for masonry cavity walls, comprising two leaves of similar thickness in the range 90mm to 150mm, in box-form domestic dwellings of up to two storeys and not greater than 10m in height. Not suitable for cavity walls having leaves of disparate thickness or stiffness, for cladding walls of any type or for multi-storey structures, of more than two storeys. Density not less than 2.5 ties per square metre. Flat sites within towns
& cities where the basic
wind speed is up to
25m/s and altitude is
not more than 150m
above sea level.

Click here to download the technical pdf