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The valleys will be GRP (fiberglass) ,under the dormers will be purpose made lead aprons 1.5 metres wide (made to fit the dormers)(not made by the roofer) but fitted by him.

I think the 9 rolls of 240mm will go to the cheeks of the dormers and the 1.5 metre trays under the dormers what I dont know where the 9m and 3 m lenghts of 600 wide lead go to ?Any roofers who would advise me please?

I wonder if someone could advise us. We are having 4 dormer windows built to our loft conversion.Each window 1.5metres wide and 2 metres deep. our roofer says that we need lead trays 1.5 metres wide to go under the windows .He also said we need 9 x 240mm x3 metre lengths of code 4 lead .he also...

SORRY, YES I AM A MUPPET.

Our building control surveyor has lookded at the plans which say rockwool to cavities and inside the wall 12mm drylined,we will put boards with insulation attached to it perhaps 25mm.He has not said it would not be ok.

I have just used online calculator someone kindly suggested for the blocks and it comes to more than double than YOU suggest !more than 304 !

The reason for the 80mm cavity is that we are building UP from an old 80mm cavity wall ! so cannot widen it ! So what is the correct width of rockwool inslulation to fit in this cavity?

Hi can someone calculate for me how much sand and cement I need for laying approx. 150 concrete blocks and 150 celcon blocks please.thanks.

How do you put 100mm insulation in a 80mm cavity?It won't fit !

Can someone help,what thickness insulation do I need for cavity wall (concrete block outside and celcon inside) the cavity is 80mm wide. Can I use Earthwool Dritherm cavity slab 32 Ultimate 75mm and what fixings do I need? or is Rockwool as good? thanks. Also how many concrete blocks do I...

Thank you for your extremely kind offer I appreciate it.I have had three more carpenters come around to give quotes and all have agreed to work out the amount of wood needed .Hopefully reasonable quotes . Thank you again.

Thanks for your message ,I have structural calculations from the engineer he does not do calculations for building materials .I can do scale drawings but do not feel confident to calculate the timber correctly.We have had carpenters giving quotes but they do not want to do the calculations.The...

Hi ,forgot to say we will have cutroof trusses NOT proprietory trusses so this company is no good for us.We need ALL the materials calculated not only wood so we can order them from builders merchants.We will happily pay for quantity surveyor to do it ,any suggestions?

We are replacing our roof completely and have quotes from carpenters to do the job. We have scale drawings of the roof and width and depth of the trusses .The carpenters do not want to calculate the timber needed does anybody know of company that can do this? I do not need to know the cost just...

I had another quote today for scaffolding £950 and for temporary roof which would take two weeks to put up at a cost of £6700 ,cost effective NOT. It is too expensive.He said he would give good price .for himself!

I had another scaffolder come around today he could use corrucated sheeting and would take one week to put scaffold up including roof and sheeting to sides but his quote was £4000 and wanted some cash for part of it!! The difficulty not having roof over the house is that the old roof has to come...

Do you really think it is reasonable to charge £2900 for retiling our roof using concrete tiles (fast) which will take max 2 days? We supply all materials! That is 2 workmen two days max that works out about £90 hour each .They can ride of to sunset I am sure you will pay that!

We are in the south west new forest close to dorset border.