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Hi all, I'm insulating the pitch of the roof and I have a tricky bit around the chimney where there are noggins in the way of the normal airflow path What would be the best way to deal with this? I've considered filling the bit between the chimney and the joists with expanding foam...

Yeah the noggins are 20mm smaller and that is why I drilled a few extra 16mm and also to cope with some saggy sarking felt reducing that gap smaller. These noggins were put in underneath gable straps as per Structural Engineer drawings. But what I'm talking about aren't noggins, they are...

Hi guys, I'm installing celotex between rafters (and below, but that's later). I have already drilled the top of the normal noggins under gable straps with 16mm holes to allow airflow but the small space between the gable wall and the last truss is a bit tricker as there are also other joists at...

Great thanks for the reassurance of the plasterboard fixing technique. More wood and fixings to buy but saved me the price of a Structural Engineer fee! Yeah I'm Insulating between and below the rafters with celotex (ridge and eaves ventilation getting installed this week). Many reasons why...

Thanks tony. I probably need to get up there or get some binoculars and have a proper look to check the external but nothing obvious. There are lots of gaps and dodgy mortar work around those blocks. Is it worth doing a bit of repointing on these and perhaps in the larger cracks also? or...

Truss clips haven't been used, it looks as if skew nailing was used to attach rafters to wall plate although it is difficult to see as can't get that close and not 100% sure I know what I'm looking for. I'm not sure how I can see how the wallplate is attached to the wall, what would have...

Thanks for the thoughts wrightwoodwork. Just been up to measure and you are right the gap on this end is between 120mm to 150mm from last joist to wall. Opposite end has no similar problems and this is <100mm. The issue is worse where the gap is larger. Fitting timber to the wall is a great...

Hi all, just seeking some ideas and some experience. Our 1st floor bedroom has always creaked and cracked about - worse in the wind and worse if the window is open. (past 3 years) Looking into it is seems that the coving is hiding a gap between the external gable-end wall and the...

Ok, so I think I've got a bit further. From here http://www.diybanter.com/uk-diy/7796-celotex-kingspan-fire-fitting-question.html It basically says to have bring ridge down to a flat "ceiling" section at the top with enough gap above to allow airflow along the roof and have vents each gable...

Hi all, trying to get rid of glass fibre in roof as going to be spending a lot of time re wiring, comms centre, alarm installing as well as future diy projects and storage etc etc. having previously considered putting celotex at ceiling level (over joists leaving existing fibreglass between)...

Hi all, planning to use 100mm celotex to replace the current 170mm itchy nasty to make working up there cleaner and easier and make plenty of storage space. With some new bracing up there making it more difficult to get around this has become a higher priority. Have been told by celotex that...

Thanks for all the replies guys I hadn't planned chevron bracing but my structure is just over 8x5m so perhaps I should. I'm leaning towards getting an Structural Engineer to advise although I was hoping to avoid it (I had a builder who said they knew what to do as if it would be...

Hi all, in the house we bought the surveyor pointed out that there was no bracing or strapping in the attic and that this should be done. I've done a load of research on how to do this myself and it doesn't seem difficult. my roof is 8.5m long by around 6m wide and the trusses are \/\/ (with...