jeli Posted November 20 Share Posted November 20 So, jumped through the planning application and now falling foul of building regulations. In the plans was for a 6.6m x 3.3m garden room, within 1 m of the boundary. This would be using Kingspan quadcore and Coldstore panels. I.e. one of their kits. Kingspan data sheets mention the panels are tested on the internal face and meet b-s1-d0 classification. Kingspan sneakily don't declare the external face rating, so I've reached out on email to ask as per the datasheet recommendation. Unfortunately, over the phone the question could not be answered. Has anyone else been down this rabbit hole before with Kingspan and building regs. Building regs are advising the materials need to be inherently non combustible which these panels apear are not. Thanks!! Link to comment Share on other sites More sharing options...
Conor Posted November 20 Share Posted November 20 I think we all know how much we can trust Kingspan datasheets. 🔥 2 Link to comment Share on other sites More sharing options...
Gordo Posted November 21 Share Posted November 21 On 20/11/2024 at 18:31, jeli said: So, jumped through the planning application and now falling foul of building regulations. In the plans was for a 6.6m x 3.3m garden room, within 1 m of the boundary. This would be using Kingspan quadcore and Coldstore panels. I.e. one of their kits. Kingspan data sheets mention the panels are tested on the internal face and meet atib-s1-d0 classificno. Kingspan sneakily don't declare the external face rating, so I've reached out on email to ask as per the datasheet recommendation. Unfortunately, over the phone the question could not be answered. Has anyone else been down this rabbit hole before with Kingspan and building regs. Building regs are advising the materials need to be inherently non combustible which these panels apear are not. Thanks!! Non combustible means A1 fire rated only. Kingspan products as a petrolium based product will not be A1 fire rated no question. Only bricks, blocks, plaster, many mineral wools, steel will be A1. How about a steel shed with mineral wool insulation and plasterboard linings 1 Link to comment Share on other sites More sharing options...
Redbeard Posted November 21 Share Posted November 21 Rigid rockwool and cement fibre-board, with suitable top, edge and joint detailing? 2 Link to comment Share on other sites More sharing options...
Iceverge Posted November 21 Share Posted November 21 Or build it from concrete blocks. 1 Link to comment Share on other sites More sharing options...
jeli Posted November 24 Author Share Posted November 24 On 21/11/2024 at 21:51, Redbeard said: Rigid rockwool and cement fibre-board, with suitable top, edge and joint detailing? I really like this suggestion thank you so much. I've had a look and can find fibre board cement rated to a2, s1-d0. I wonder if the Kingspan wall panels can be clad with this and satisfy building regs. Link to comment Share on other sites More sharing options...
Redbeard Posted November 24 Share Posted November 24 On 20/11/2024 at 18:31, jeli said: Building regs are advising the materials need to be inherently non combustible which these panels apear are not. I wonder if this means *all* the materials.... I suspect so. 8 hours ago, jeli said: I wonder if the Kingspan wall panels can be clad with this and satisfy building regs. Not if my supposition above is correct. I don't know the spec of the Kingspan panels - they could be phenolic (lambda 0.019ish W/mK) or PIR (lambda 0.022ish). Min wool at 0.036 ain't so good, but it's good at keeping the fire at bay. What U value are you trying to achieve? Could you just use the requisite amount of mineral wool? 1 Link to comment Share on other sites More sharing options...
Iceverge Posted November 25 Share Posted November 25 PIR sandwiches panels (Kingspan) have their place. I'm just not sure its in areas that require strict fire controls. I would be of the mind to pursue a methodology that didn't involve them. What about a standard cavity block wall with Rockwool (or similar) full fill insulation. 1 Link to comment Share on other sites More sharing options...
jeli Posted November 25 Author Share Posted November 25 Thanks guys, as always greatly appreciated. Planning refused my application to have a tandem garage on the side of a double storey extension. The garage was going to be used as a home gym. So, I decided I could put a 6.6m x 3.3m garden room in the garden instead of the garage. Planning were now satisfied. I went for Kingspan due to the ease of the build process, expecting it to meet building regs of within 1m of boundary. Kingspan appear to be ignoring my questions, that I was told to email to them. I think this says it all to be honest. Budget is under 20k to have the garden room fully finished (include plastering and electrics). Link to comment Share on other sites More sharing options...
jeli Posted November 25 Author Share Posted November 25 So, Kingspan Quadcore and Coldpanel have a fire rating of c,s3-d0 on the exterior face. No wonder they didn't include it in the data sheets. Over wrapping Quadcore and cladding with fibre board cement is a no go. Fibre board is rated to A2 which is very limited combustability but building control want A1 non-combustible. Whatever I now do, I think it will be 1m from the boundary. Link to comment Share on other sites More sharing options...
jeli Posted November 25 Author Share Posted November 25 Sorry, some corrections Kingspan Quadcore and Coldstore panels have a fire rating of c,s-3-d2. B, C, D = ranges from very limited to medium contribution to fire (Fire Behaviour) S3 = substantial/heavy smoke (Smoke Development) D2 = quite a lot (Formation of Flaming Droplets/Particles) Link to comment Share on other sites More sharing options...
Iceverge Posted November 25 Share Posted November 25 https://globepanels.com/insulation-products/globe-wall-mineral-ei/ This may be a solution. 1 Link to comment Share on other sites More sharing options...
Gordo Posted November 26 Share Posted November 26 (edited) On 25/11/2024 at 16:26, jeli said: Sorry, some corrections Kingspan Quadcore and Coldstore panels have a fire rating of c,s-3-d2. B, C, D = ranges from very limited to medium contribution to fire (Fire Behaviour) S3 = substantial/heavy smoke (Smoke Development) D2 = quite a lot (Formation of Flaming Droplets/Particles) Just in case your not sure - B,C&D are combustible. A2 rating is a product of limited combustible and A2 is non combustible second and third digits are of no interest in this scenario. External dwelling walls within 1m of a boundary usually require 30 minutes fire resistance from froth sides. Your BCO may accept 30 mins FR in lieu of non combustible. Edited November 26 by Gordo 1 Link to comment Share on other sites More sharing options...
Gordo Posted November 26 Share Posted November 26 On 25/11/2024 at 17:00, Iceverge said: https://globepanels.com/insulation-products/globe-wall-mineral-ei/ This may be a solution. While this panel may be FR any supporting structure / frame to the FR element must offer equivalent FR. So I say most likely no acceptable 1 Link to comment Share on other sites More sharing options...
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