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Thanks for that, they have sent me a letter saying i need to apply for planning for rasing the ground level to where it is shown on the already passed elevation drawings. Can they back track on the levels as all the drainage and inspection chambers are installed to that level Probably was a...

Afternoon, I have had a planning application approved for a single story extension which has been now been completed and built. The working section and the elevation drawing on the plans show the ground level built up to around 150mm below the new door openings the ground is now at this...

Afternoon, I am having condensation issues with an insulated pitched ceiling with taped cellotex joints, breathable membrane etc (see my other post) In order to try and remedy this i would like to instal a VCL as a secondary vcl to the taped kingspan. the pobelm being im not sure what...

Unfortunately I let the builder collect the breathable membrane, naively assuming they did what they said on the tin, this now appears to be incorrect The roof adjoins the rear of the property which is a 9 inch solid brickwork wall I have had the under floor heating on prior to...

Thanks for the reply, its really interesting about BBA, I found the certificate and 6.5 states no ventilation is required( if I'm reading it correctly) http://www.bbacerts.co.uk/CertificateFiles/47/4748PS1i1a29.04.2010.pdf Im wondering if I finish the boarding up to the veluxs' this...

Hi Jeds, I used aluminium tape to tape the 50mm underlay insulation over the rafters. I was wondering is the warm air was entering the roof space where the velux's are yet to be plasterboarded. I have left a section of insulation and plasterboard down and that section is now bone dry. I...

Thanks Jeds, Hopefully that should cure it then. Is this the right product ? http://www.screwfix.com/p/vapour-barrier-2-5m-x-20m/12869 If not what type would you suggest it must be the warm moist air getting through, although I thought 150mm of taped kingspan would have been quite an...

Thanks for the reply Jed, I will leave the board and insulation down to allow it to dry out. Where the insulation has been removed there is now no condensation on the underside of the membrane? I have also been running a dehumidifier over the past week or so to help dry out the new extension...

Thanks for the reply, its a lean to roof with no ridge so there is definitely no ventilation there, the soffit and facia are of solid construction, the builder was confident that the breathable membrane did not require eaves ventilation. Now however im not so sure! I also forgot to mention i...

I have recently had built a 3x8metre wraparound type extension to the rear of my property and have found this forum invaluable during the process. I had the builder build to a shell watertight finish. eg roof and glazing installed, screed floor and all steelwork and then it was over to me to...