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More than 25% of the render (in fact 100%) was removed so doesent it all have to meet regs?[/u]

Hopefully a drawing will explain better. Top layer is screed Red/maroon is insulation bottom blue yellow is screed/ concrete in terrace formation.

Thats exactly right. Floor is currently sloped from 1.1m to 400mm. Step 1 Screed/ concrete to bring to terrace levels 600 wide. i.e a series of steps with 600mm tread from front to back each of which is horizontal Step 2 Then Insulation laid to bring complete floor level/ horizontal...

Thanks.. I dont think i was clear enough.. This is a refurb. The existing oversite is sloped. I want to level it into 600 wide terrace like formations. On which different thickneses of polystyrene insulation boards (EPS expanded or XPS extruded) will be applied that will then bring the...

Understood. Here are links all be it a little old.. Lookin gback over them the U value has since improved and is not 0.038 or 0.037 as speced but is 0.036. http://www.wbs-ltd.co.uk/external-wall-insulation/wetherby-systems/system-components/insulants/mineral-wool-insulation/...

Thanks for pointing that out I do see why being in-precise as to the fabric led to confusion... It should have read Mineral Fibre Board (u value of 0.038). However choice of manufacturer / system makes no difference to the problem . The problem is specifically to do with a section being...

I need to level the oversite. Can somebody tell me what the minimum allowable concrete that can be placed on oversite is? Also how long should it be left before placing EPS/XPS over the top? On top of insulation will go UDF screed and then concrete microtopping. Regards

Ok, great. And how would I calculate how much extra is required elewhere? Rockwool EWI based on Vapour permiability & price compared to other products. Have a look at specs on Knauf Rocksilk. Or equivelent wetherby system On top would be monocouche silicate render. Why does use of...

Health and safety executive = HSE

So I'm intending to put up ewi. Solid brick so wanted to use mineral wool.. however I have a very narrow path 'just' enough to get a wheely bin through. What I wanted to do was place 130mm everywhere apart from in this section as to keep the pathway.. and so in this section I would use aprox...

Anyone?

it tells you in the description.. 1) no need for DPC through use of glass-reinforced plastic (GRP) 2) Thermal efficient : reduces thermal bridging 2 problems of steel lintels removed at point of manufacture thus cuts down work and reduces labour. In terms of strengh they will perform the...

Just wondering - having seen some reasonably priced beams - what the best method of cutting to speced size would be? Disk cutter, recip or are both too slow and best with oxy acytelyn torch or plasma cutter?

I see.. yes you are right.. Its ludicrous at best. Its a responsibility that should and will only be taken for an extra fee. Of course that person will require to be insured for the responsibility.. At at time when there are not enough properties they make it even harder and more costly to...

Actually guidelines are a little different than that.. Projects bigger than 30 working days and have more than 20 workers on site at any point or construction work is scheduled to exceed 500 person days, have to ALSO register with the HSE

Nice plan but what steps would you take to make sure holes were aligned and post was plumb. And what if there is less than 6" base what would you do then?

They are all beams/ joists or load bearing members of forms.. Have the beam above the ceiling? Maybe they just have more height to start with.

Have you thought of Insulated Concrete Formwork instead of traditional brick & block?

That something other than the patio doors has to support the flat roof joists.