Glossary | |
| Terms that are on use on this site. | |
|
| |
| FIRRING | Tapered pieces of timber laid on joists of flat roofs to provide an adequate fall to gutters. |
Glossary | |
| Terms that are on use on this site. | |
|
| |
| FIRRING | Tapered pieces of timber laid on joists of flat roofs to provide an adequate fall to gutters. |