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Great, thanks for that!

Hi there, quick question. Where should the water bar in a door cill go in relation to the rebate and seal on the jambs? Hard up against the rebate? Or should it be stepped back a little behind the seals? Thanks.

Basically the rebate formed in brickwork to take a sash window or door, so that the frame sits behind the front course of bricks. At least that's what it's called in these parts ...

Have received an answer privately, so know what I am doing now, thanks for reading!

I need to make a door frame to go in a traditional check reveal and am wondering about what the standard dimensions would be. I have allowed 50mm for the width of frame that is visible, I'm wondering how much more is generally added for the rebate. Im thinking another 50mm, is that about right...

You're right about that for sure, but stuck with them now I'm afraid ... !

Turns out to be pretty straightforward. Building Control happy for us to make up the check reveal using the cavity closers, or to do a block work return and simply foam up to the cavity closer or block work to hold them in place.

Thanks for your thoughts, and thanks XTiffy for that link, which is very useful. I've been making enquiries of building control and others, and getting closer to a so;llution, will report back in a bit...

I don’t know re building control, I assumed there would be a way, are you saying that it’s no longer possible to fit box sash’s to new buildings because the regs won’t allow? That would be sad 😞

Choice is simply an aesthetic one, it’s an old house and all existing windows are box sash and I want them to match …

Hi there I'm trying to figure out you fit box sash windows into new cavity walls—in particularly walls built under the new regs which have a 150mm cavity. Excuse my ignorance about this. Also please excuse by builders ignorance—he doesn't want to fit sash windows anyway (waste of money mate!)...

I know, it was tongue in cheek, hence the qualification after, however to avoid confusion I have removed that requirement!

I need a couple of new timber sash windows for my extension, supply only. They need to: Meet current building regs (obvs) Have reasonable lead time (six weeks or less) Anyone here interested, or can you recommend a good supplier? I'm in Surrey. Thanks Marcus

I now know more about reinforced concrete than I thought I ever needed or wanted to 😂

Thanks for your continuing responses, all been very helpful, things are going better now :)

Thanks Garden Shed Projects, I was just thinking that I will drop the engineer a line today ...

I really appreciate people taking time to comment on this, thank you. I do know that the rebar was ordered and bent specifically for this job. The Jalite is product called Claymaster, which, according to their website, is designed to deform under heave, and was specified in engineers drawings...

Thanks everyone, here's one more picture of the bottom of the trench. How does it look? The idea I think is that the pink heave protection (Jablite Claymaster) is intended to act as the formwork for the bottom (Jabliite's product page says this is OK and part of the point of the product). I'm...

Thanks for your replies, Garden Shed Projects—they are using a deformable polystyrene product on the inside edges of the beams (which can be seen in the picture, much of it now broken) to allow for ground heave (nothing is specified for the outside edge) ...

Hello, This is a question for any builders on the forum, opinions gratefully received. I need to have a chat tomorrow with the person who produced this shambles in my garden (sigh) which is supposed to be the foundation for an extension (it is heavy clay soil with trees hence the pile and...