Drainage stacks - avoiding roof penetration. 

 - Garston,Watford  Building Research Establishment  1990 
 - 1 sheet : ill. ; 30cm. 
 - Defect Action Sheet  143 (Design) DAS  143 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>BUILDING DEFECTS<br/>RAIN PENETRATION<br/>ROOFING<br/>BUILT ENVIRONMENT-BUILDING ELEMENTS-COMPLETE BUILDING ELEMENTS-ROOFS
<br/><br/><label>LC Class. No.: </label>690.25