Aldo Posted February 26, 2020 Report Share Posted February 26, 2020 Where walls are dot n dab on masonry party and external walls and not on the fire line escape route are intumescent "putty" pads required? Thanks for any advice. Quote Link to comment Share on other sites More sharing options...
Tom Sutton Posted February 27, 2020 Report Share Posted February 27, 2020 I am not aware of such a ruling could you enlighten me the origins of the ruling. Quote Link to comment Share on other sites More sharing options...
Aldo Posted February 27, 2020 Author Report Share Posted February 27, 2020 8 hours ago, Tom Sutton said: I am not aware of such a ruling could you enlighten me the origins of the ruling. The guidance is (as always) a bit fluffy. I have uncovered for a client, missing putty pads on MF/PB walls that form a 30min escape corridor. This is a no brainer - they need putting in. But the investigative report shows no putty pads where boxes are on external walls and party walls that are shown as 60min - these walls are 12.5 (grey) PB on dabs on 100mm concrete block. FYI the fire line of escape route goes through ceiling void to concrete block and beam floor. My thoughts are there is low risk of spread of flame or smoke in void between PB and blockwork as no fuel (assuming solid line of dot/dab along parameters. Quote Link to comment Share on other sites More sharing options...
Tom Sutton Posted February 28, 2020 Report Share Posted February 28, 2020 No matter how fluffy what is the guidance. Quote Link to comment Share on other sites More sharing options...
Aldo Posted March 2, 2020 Author Report Share Posted March 2, 2020 On 28/02/2020 at 09:49, Tom Sutton said: No matter how fluffy what is the guidance. Doc B2 internal spread of fire https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/441669/BR_PDF_AD_B2_2013.pdf Quote Link to comment Share on other sites More sharing options...
Tom Sutton Posted March 6, 2020 Report Share Posted March 6, 2020 Check out the white book https://www.british-gypsum.com/literature/white-book and talk to British Gypsum. Quote Link to comment Share on other sites More sharing options...
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