EWI, rerouting pipes.

[hail hail]

I'm going to be doing EWI on my own house in the summer however, its wrecking my head how I'm going to reroute these waste pipes for my 2 bathrooms upstairs. If the EWI is to come off the wall 100mm, I won't be able to get it behind these pipes. I know the pipe's can be moved, but how on this job. If I move them forward 100mm, the bend will be coming through the fascia board and itll look awful. Any ideas?

On these pics it looks like I've 100mm to play with but at the top of the bend, its touching the slope on the roof so can't really move it anymore forward.

 

[vfr12]

b*****d that hail hail ! Why from the fascia anyway ?Reroute from inside might be the only solution. Don't bury them with the ewi tho!

 

[Dansouthcoast84]

at a 1st glance could you twist the bend coming out the soffit so its pointing away from wall then another bend to bring it back across which should come in line with the new adapted upright stack once you swan neck it at ground?

 

[Dansouthcoast84]

the top pic. hmmmmmm f uck knows.lol
as said above can it not drop internally?

 

[owls]

First thing why is it they've used underground pipe above ground, it looks terrible. Can you not leave where they are if internals not an option but have a slight recess In the external insulation maybe use 50mm board behind the pipes and form a slight alcove behind them.

 

[hail hail]

b*****d that hail hail ! Why from the fascia anyway ?Reroute from inside might be the only solution. Don't bury them with the ewi tho!

I put them through the soffit because its just the way everyones is done here. I did this about 13 years ago. Didnt want them running down the internal dining room wall. Still dont and even if i changed my mind, itll still have to come out the wall at the bottom somehow and bend into the footpath.

First thing why is it they've used underground pipe above ground, it looks terrible. Can you not leave where they are if internals not an option but have a slight recess In the external insulation maybe use 50mm board behind the pipes and form a slight alcove behind them.

They where free! Only reason why i used them. I started building my house at 23 years old. I did all the plumbing/pipework and got these pipes of another job for free when i was about 25/6 yr old. At this age, building a house was a huge expense(still is at any age) so naturally when on site, i always picked up a few materials like light switches, bit of plasterboard, insulation, pipes etc... Just basicly anything i could get my hands on that was either left over from the private sites or a foreman let me have one or two items from the large sites. So, it was buy the black pipe for running outside the wall or install free underground pipes that could be painted at any time. its a no-brainer really. Thou 14/15 years later, i still havent got around to painting them lol

 

[Deleted member 23452]

Could you form a box from the EWI at the top? Bring it out at the top of the windows, then take it up flush with the fascia to form a box around the piping. It'd look like a deeper fascia and preserve the insulation.

Alternatively you could extend the horizontals and take the downpipe to the right past the corner. That's mean doing the same at/below ground but it'd save you messing about with the face of the building.

However, if you don't mind spending a few bob then Kingspan OPTIM-R vac panels are the way to go. They're 20 to 60mm thick, but give four or five times the insulation value of the 'normal' EWI slabs.

 

[hail hail]

Could you form a box from the EWI at the top? Bring it out at the top of the windows, then take it up flush with the fascia to form a box around the piping. It'd look like a deeper fascia and preserve the insulation.

Alternatively you could extend the horizontals and take the downpipe to the right past the corner. That's mean doing the same at/below ground but it'd save you messing about with the face of the building.

However, if you don't mind spending a few bob then Kingspan OPTIM-R vac panels are the way to go. They're 20 to 60mm thick, but give four or five times the insulation value of the 'normal' EWI slabs.

How much is the kingspan optim-r, cant find the price online

 

[Deleted member 23452]

How much is the kingspan optim-r, cant find the price online

They price it per job as all the panels are made to shape then the vac applied as they do with double glazing units. So the more board sized panels you have the cheaper it works out per square metre. The last job I used it on was five years ago for a floor (same stuff for both) and the 20mm has the same insulation as a 65 mm foil board, IIRC it worked out to be @£80:00 per square metre. The architect spec'd that stuff because the floor could only be thin due to pipework and ducting, but had to be insulated.

It's bloody dear, but I suppose in part because it's made to fit, and also because it's a third of the thickness of anything else.

 

[hail hail]

They price it per job as all the panels are made to shape then the vac applied as they do with double glazing units. So the more board sized panels you have the cheaper it works out per square metre. The last job I used it on was five years ago for a floor (same stuff for both) and the 20mm has the same insulation as a 65 mm foil board, IIRC it worked out to be @£80:00 per square metre. The architect spec'd that stuff because the floor could only be thin due to pipework and ducting, but had to be insulated.

It's bloody dear, but I suppose in part because it's made to fit, and also because it's a third of the thickness of anything else.

I could do the back of the house in it and the rest of the house in the 100mm ordinary kingspan. One thing thou, its saying its gas filled, what about screwing threw it or is it glued on?

 

[Deleted member 23452]

I could do the back of the house in it and the rest of the house in the 100mm ordinary kingspan. One thing thou, its saying its gas filled, what about screwing threw it or is it glued on?

Definitely can't put screws through it! They come with strips for floors, and it's a similar system for walls but I've never used them vertically. I believe that the panels are held by the strips.

I'm sure if you contact Kingspan they'll give you a quote and the rundown on it. They seem pretty keen on getting the word out there for use on 'normal' projects.