National Building Specification Clauses

NBS clauses are very carefully worded so as to be unambiguous and totally clear in meaning. This helps in preventing any misunderstandings which could lead to problems on site.

Click on the links below to obtain NBS clause text, simply copy and paste into your required specification:

Z21 MORTARS

• 190 retarded ready to use cement gauged mortar
  
  

F10 BRICK / BLOCK WALLING

• 05 facing brickwork
• 10 reclaimed facing brickwork
• 15 concrete facing blockwork
• 20 manufactured stone blockwork
• 110 clay facing brickwork
• 170 calcium silicate facing brickwork
• 210 concrete facing brickwork
• 230 reclaimed brick facing brickwork
• 250 concrete facing blockwork
• 255 concrete facing blockwork
• 290 manufactured stone blockwork
• 295 manufactured stone blockwork
  
  

M20 PLASTERED / RENDERED / ROUGHCAST COATINGS

• 10 cement/ lime/ sand: render
• 19 proprietary render
• 42 proprietary plaster
• 160 proprietary cement gauged render
• 220 multicoat proprietary plaster