External wall insulation..Waterproofing edges?

delmonta

-taff said:

Ask them why they haven't put a stop bead on the sides.  Ask them if you're paying for one. Ask them about a guarantee.

I've just read in the quote '25 year GDGC insurance backed warranty'. Not sure what that is, but sounds good!

bengalknights

Is this under GHG? just curious how much its costing?

delmonta

-taff said:

Ask them why they haven't put a stop bead on the sides.  Ask them if you're paying for one. Ask them about a guarantee.

Is there not only meant to be a corner bead/stop thing not the corner? Not actually something pressed agains the wall? I'm confused

delmonta

bengalknights said:

Is this under GHG? just curious how much its costing?

Yeah it is, it's been a nightmare getting the vouchers but got there after nearly 6 months. 

£7500 for external insulation, and internal insulation on the front, and all the skirting, soil pipes, vents, radiator changes and extra bits

So with the grant I pay £2500

m0t

Just taken a look at mine and they used a sealant where the render joins the neighbours house.

You don't want it to be unsealed as you can get rain behind the boards that way. We had that at the start where they forgot a bit of the sealant and had a leak when it rained heavily.

You're right to worry about the finishing around drain pipes, that's where we have had the most trouble with ours. 

Why is the top trim not straight?

delmonta

m0t said:

Just taken a look at mine and they used a sealant where the render joins the neighbours house.

You don't want it to be unsealed as you can get rain behind the boards that way. We had that at the start where they forgot a bit of the sealant and had a leak when it rained heavily.

You're right to worry about the finishing around drain pipes, that's where we have had the most trouble with ours. 

Why is the top trim not straight?

Thanks. So what happens in a year or so when the sealant gets worn. It would be a bit of a hassle or seal everything again on a ladder.

What happened to your guttaer area? 

Wow I didn't notice the top trim being so unlevel until you mentioned it. I've just had a look, it see they've just gone right up to the fascia that was already there, which also is not level! To be honest so much of this house isn't level, floors, walls, everything. It was built in 1910. It also had subsidence a while back, although I imagine that was only a few mm. 

Should I say anything? I guess it makes sense they only went up to theexusitjg fascia

Also what makes it look morewonky is the gutter has a fall on it. 

m0t

Our EWI system came with a document on upkeep that recommends that all the sealant is checked once every 5 years. It shouldn't fail unless there is a lot of movement between the sealing surfaces. Ours has been on for 6 years so far. If you think about it window fitters use it to seal new windows in to houses and it lasts years.

Not levelling the top is a symptom of trying to get through this as quickly as possible without doing a proper job. I can understand why it's not level if they've used an existing roof structure and I suspect the only way to get it level would be to redo the fascia so it's level and cost you more money.

When they did ours they took the level for the bottom of our kitchen off a wonky bit of Bell bead. I had them bring the EWI to the floor at no cost to hide their mistake.

Where the gutter was cut in to the EWI in a little pocket for our single story downstairs kitchen we had water getting in during heavy rain because the gutter would overflow and water would flow behind the boards in to the walls.

delmonta

m0t said:

Our EWI system came with a document on upkeep that recommends that all the sealant is checked once every 5 years. It shouldn't fail unless there is a lot of movement between the sealing surfaces. Ours has been on for 6 years so far. If you think about it window fitters use it to seal new windows in to houses and it lasts years.

Not levelling the top is a symptom of trying to get through this as quickly as possible without doing a proper job. I can understand why it's not level if they've used an existing roof structure and I suspect the only way to get it level would be to redo the fascia so it's level and cost you more money.

When they did ours they took the level for the bottom of our kitchen off a wonky bit of Bell bead. I had them bring the EWI to the floor at no cost to hide their mistake.

Where the gutter was cut in to the EWI in a little pocket for our single story downstairs kitchen we had water getting in during heavy rain because the gutter would overflow and water would flow behind the boards in to the walls.

Thanks for all the info

Yeah these guys kept saying silicon. But maybe they meant frame sealant like you said, that goes around windows. It's just a bit different in the corner around a window frame than all the way down the side of the render. But hopefully it will be ok

Yeah that's a shame I didn't notice the unlevel fascia, but they did all of that before I would have had a chance to say anything. Once the scaffolding is down and there's not such an obvious horizontal line to compare to, it should be ok! I didn't notice it before

That doesn't sound good about the gutter. That's the main bit that I'm worried about as they've cut the metal quite badly and I can't see sealant making a perfect seal. I have a long ladder so I guess I can check periodically

All that aside how has your EWI been? All good, no issues other than the gutter, no damp etc? Have you noticed savings on heating during the winter? Is it substantial

Thanks

delmonta

Oh and heres the before and after...

m0t

We had ours installed in December 2015 and after submitting meter readings for two month's afterwards our annual bill was adjusted down by £180. That was off a dual fuel bill of around £1200.

Ours is a semi though so a lot more surface area to lose heat.