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Yes, that’s what I indicated to, maybe using mortar, bricks etc to wedge the wall in as tight as possible, if only temporary. Either way, I should be able to challenge the builders before they come on site as to what they would target, and hopefully fallback to a OSB + plastic if they don’t find...

It’s a solid wall, 2 bricks thick’s. Most probably around 5.5m long (once columns are in and some bricks taken out for manuvering. It would effectively be a free standing wall (no returns) with a wall in the middle coming off that wall like a T shape. I’ll make sure I check with the builder...

Maybe, but still need some way of fastening to the steel beams. If we drill into the steel beams, my worry is it will reduce the capable load, hence why I think the SE should have calculated the beams with fasteners in mind.

Hah, exactly my thoughts Tony, I like the idea of the product, but unable to find a supply. Considering the cost of doing what woody suggested, (assuming it’s the traditional approach most builders take), I don’t think it’s necessarily worth the effort to source those ancon hammer on ties...

Seems simple enough, I guess costing wise, will just need one of these for the day (if builder doesn’t have one) https://www.hss.com/hire/p/rapid-cartridge-hammer, Nails and ties. Maybe it is simple enough of a process to omit and I’m just over thinking it. I will need to check with the SE...

Hi I’ve attached the site drawings of an extension i am planning to get built. The red lines are the anticipated beams. C1 and F1 are the columns and padstones. Padstone size is 1200x950x500). Purple dotted line (F2) is the new standard depth foundations (60cm wide and 100cm deep). These are...

That’s what I though, although worst case scenario, I guess we could board up the opening with OSB and waterproof if we believe safety is a concerns. I agree, I think I’ll be going with the builders who will aim to put the posts in first and then the beam and if necessary then take down the...

Hi guys I’ll be getting 2 steel columns installed for a 6m beam. One will have a pier of masonry on the corner of the existing building. The other will be right in the corner, SE specced it to be 1 leaf of brick + 203 steel. This is aimed to make is as flush to the new extension wall as...

Hi All As part of my extension project with existing ground floor being open-planned, the design is to build a Goal Post structure, 2 Padstones, 2 Columns, Beam on 2 columns etc to open up a 6 meter wall. Due to budget constraints and the fact we need to live in the house, we wanted to keep...

I’ll check with BCO about full fill insulation. Products like the xtratherm full fill offers a layer of moisture protection. Do you see any issues with this setup for the retaining wall: 300mm aerated foundation Block - 100mm cavity - 100mm aerated block. The rest of the walls that are not...

The cavity wall that’s spec’ed is a 100mm Block 100mm cavity 100mm Block. We were planning to put 100mm PIR insulation in the cavity. Based on what you mention about the vent going up the cavity, the general size of the vent is 50mm thick. Do you mean either use 50mm PIR or make the cavity...

Great, thanks. Yes, Building control have also stated using telescopic air vents that go under a concrete floor to vent air into the existing void. Assuming we are putting a vent in the cavity, we won’t be able to insulate the area. Is this loss of insulation suitable? I suppose when it gets...

Thanks the designs don’t allow keeping the existing wall and leaving a gap. The extension is just about 3m up to the wall. For #2 creating another retaining wall will result in wasting space between the house and the new retaining wall. I believe #3 is what I am looking for. From the looks of...

hi I’m looking for advice on getting an extension wall built that will be partially under ground. The current wall is a retaining wall as attached, which is about 800mm off ground level. The extension wall will be up to this height with windows sitting on top. I have had a couple of builder...

Hi all I'm planning an extension to the back of our house. It will be a simple 3x6 orangery type extension. One side (3m) will be a party wall thus a full wall, the other side (3m) will be for a French door out into the garden, the long side (6m) will be 60% windows, this is also the side with...

Hi Guys Im new to this forum, just brought our first house and currently renovating it. I have just installed insulation under the floors, and replastering the walls is under way. I would like to lay Under floor heating Overlays from Wunda floor heating, due to issues with putting under...