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We are re-roofing our house... finally. We are also converting the loft (when we get to it), we have a target u value of 0.18 W/m2k for the roof. Rafters are currently 87mm x 55mm @ 400 centres, part of our structural work is to increase the rafters with a 50 x 50 batten on the underside (to...

I have done lot of cleaning bricks on our renovation over the past year, and also a lot of paint removal. The Torik steam cleaner we are using on our house would have that off I think. Be careful with pressure washers, they have the capacity to eat bricks. granted you have engineering bricks...

Cheers Damo, that is a very useful link. Dan

Tony, is this accurate enough to use as a benchmark figure, to give to BC? Do you mind me asking how/ where you got it? Thanks Dan

Kudos Tony, that is very helpful. The LBC did say the same regarding moisture. we have a wire cut outer skin. pressed inner. having dug all the muck out of the cavity (came up to first floor) I do not intend to fill it with anything. Thanks Dan

Thanks for your reply Tony, They didn’t exactly insist. Basically we’re restoring an old Victorian cavity house that was covered in paint. And had many damp issues when we got it. we’ve tediously removed all the paint. Ground out all the cement, unclogged the cavity. anyway long story short...

Before I go and spank 70 notes on an energy assessor to calculate this for us. Does anyone know of a free U value calculator for a cavity wall? Building control have asked us to calculate this as part of our renovation. I'm guessing LBC will probably only accept something official...

Thanks for the replies, this is very much in the early stages of planning, just considering options as our slate roof is in need of replacement anyway. seems sensible to explore the warm roof option.

Thanks for your reply IT Minion, you are correct. It was a while ago I researched this, and I appear to have got a bit muddled. A single layer of the foil stuff is sufficient with nothing between the rafters. The alternative would be 175mm of celotex, which would need a 50mm air gap, so 225mm...

Hi Notch, The foil stuff, actis boost or tlx gold type stuff. Breathable vapour barrier and Insulation layer in one. As I understand it this above the rafter Insulation uses the counter batten as the air gap meaning I can completely fill the rafters with insulation meaning less Battening down...

We are planning a new roof on our house renovation, leaks badly and has been tarred countless times. Planning to utilise our top floor space, it's not really a loft conversion because it already has a structural floor and some windows, so thinking about insulating the underside of the roof...

I took that down! Still got a few courses to go.

One of the few nice “surprises” we have encountered! Yes we have brick supporting walls below. Total joist span is 9m ish (30ft) from inner cavity wall to inner cavity wall.

Pics

Thanks everybody for taking the time to reply. We have a large project going on & the house needs a lot of work; the structural engineer was really here to discuss complete removal of the kitchen chimney breast and removal of the wall on the ground floor. (knock two rooms into one) in passing...

I think the roof was installed back when felt was not available. It’s had multiple coats of tar on the outside(I kid you not!) apparently the bloke that had it before us used to tar every year. we’re ripping the whole thing off and re slating it with membrane this time.

Loft floor joists are already plenty large enough. And have been approved by our structural engineer as they are. I will get up there later and take some better photos and measurements.

Thanks Noseal, There is indeed another on the other side. Yeah we’re renovating this place and plan to add a couple more bedrooms on the top floor. now I know what it is I’ll speak to our structural engineer, but if you or anyone else have any words of wisdom regarding whether this can be...

Hoping this isn’t structural, because i would like to move it to make our loft conversion a little larger. If I kick it, it moves a fair bit. Haven’t gone in with the crow bar yet because I was hoping to find out what it is first. Is it a roof binder? It runs at 90 degrees to the floor joists...