An extension build

You need a cavity tray (if you have a cavity) above the roof line where it joins the main wall so the internal moisture can run down and out in weep vents over the roof. The original windows would have had them but you’ve raised the line they can weep out to.

Moisture will just run down the cavity and end up soaking your steel beam.
 
@{SAS}TB love that. We're still in the planning stage but love the island in the kitchen and the lighting. We're having a flat but high roof so won't have the same opportunity but you've got great taste!
 
Maccapacca said:
You need a cavity tray (if you have a cavity) above the roof line where it joins the main wall so the internal moisture can run down and out in weep vents over the roof. The original windows would have had them but you’ve raised the line they can weep out to.

Moisture will just run down the cavity and end up soaking your steel beam.
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Looks like this is a requirement for building regs and they have just been signed off, so I’ll check in to this, thank you.
 
Freefaller said:
Exactly that. A large sky lantern and 4.5m sliding doors. The extension will be over 12m wide and 4m deep .

If we go ahead with it I'll do a thread. On it.
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Brilliant !

My sister in law has almost exactly the same - the sky lantern is fantastic
 
Karl said:
Hadn’t considered that on the steel, and have no special plans on the lighting other than spotlights. I’m all ears if you have specific examples or guides? How would such a lighting design plan come together?

Cheers!
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Unfortunately it's not as easy as just throwing some things in, like most electricians and builders seem to do. A lighting designer is almost an ambience architect :D

For some inspiration have a look at PHOS, they have incredible fixtures and their projects are stunning.

Architectural Lighting Projects | PHOS

Visit this page to browse our various lighting projects, where visions were brought to light. Full galleries of each project available for viewing.
www.phos.co.uk www.phos.co.uk

I bought a chunk of older fixtures from them a while back and generally used Highline for my LED strips:
www.hiline-lighting.co.uk

Quality LED lighting delivered fast from Hiline Lighting

HiLine Lighting offers a wide range of LED lighting including LED strips and LED Luminaires, with a 3-year guarantee on all products.
www.hiline-lighting.co.uk www.hiline-lighting.co.uk

Here's an example of what you can do with a decent variety of lighting and not a single spolight in sight:

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1. Upfiring 14.4W strips on kitchen side of RSJ and around the tall units, no need for spotlights.
2. Task lightning LED strips recessed into cupboard units to cover the sink and coffee area.
3. LED strips under the top edge of the Stainless Steel worktop and all handlesless drawer/cupboard edges, to light drawers when open.
4. Large feature task light over the island.
5. A movable 12W light in each skylight.
6. A set of 14.4W upfiring LED strips on Dining/Living side of Island and in cladding above sliding doors.

It was then easy to create a variety of moods and lighting for whatever the space was used for (cooking/baking, eating, TV, partying, dancefloor etc)
 
Freefaller said:
Is that a mirror splashback or a window? Looks really cool!
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Cheers, not mine anymore, but will be using another at the next house! It was nice being at the sink then looking back out at the garden. Great for partying or say keeping an eye on kids/dogs.

It's a mirror, but dark grey tint. So looks less like a generic mirror. Think it was like £250 inc the neutral cure adhesive to just stick it to the wall.
 
I think it works really well there. Something I've been contemplating with our kitchen design if we decide to go ahead with the extension.
 
End of week 6, and a fair bit of progress has been made.

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Here's the dining room after the plywood partition came down between the new bit and the old bit. The plugs hanging down are the Velux windows.

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This is the old kitchen area, minus the oven, and cabinets that were on that partition wall. Most of that wall came down later in the week.

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Gap where the bi-folds will go.

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Here's a dodgy iPhone panoramic of the space after the partition wall came down. It'll be partly built up again with stud walling to create the utility room, but most of it is staying down for good.

You can see the new steel in place that forms part of the T-shape as well. That got drilled on site with a mag drill. Very cool.

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By the end of the week, we've had first fix lighting and switches installed, created a channel in the concrete floor for the new waste pipe, and filled some holes in the solid flooring with concrete.

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We've also discovered a leak in our shower tray is coming down in to part of the room, so have to re-seal the tray, and consider ourselves lucky that we discovered it at this point!!!

Next week some more first fix stuff goes in, and then that chimney breast you can see will come out, along with the one in the bedroom above, and the attic.
Then we'll be looking at putting flooring down and plasterboarding, maybe even some plaster. I guess we'll see how quickly it moves along.

Finally starting to take shape!

Thanks for all your contributions and talking points so far, I've found it all very useful.
 
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