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We're having cork tiling put down (6mm thick), floorboards seem in pretty good shape but there are a few wide-ish gaps 3-4mm and I can't guarantee that all the edges are the same height so I wouldn't want any unevenness of the floorboards to start showing through the cork. Should I put a...

Blimey, the quote from Ancon was £470 inc VAT for what is essentially a flat plate of steel with some holes in it. Will call round some local suppliers, but also there's scope for using a standard steel box section so will try to price that up too. And I thought the biggest problem the wind...

Just out of interest, would you be able to disclose the cost of your wind posts? I just got a quote back for a single wind post and it's almost 5 times what we're paying for a 3m universal beam :-o so are seeing what other options are out there.

So safe to break up the concrete around it? Or do I still need a GSR to deal with it, just in case?

Don't know if it was live, but the gas man dealt with it so it's dead now. Hurrah. But on the ground floor chimney breast I came across this - is this a sawn-off gas pipe? There's no cap or anything that I can see, and it looks like the concrete hearth was poured around it.

Inside skin is brick, 1930s council house build. The buttress wall that heads towards the inner skin is also brick.

Two SEs were confident that they could design a windpost solution, so if not Ancon then which type of windpost is better suited? From the link above, the WP4 seems to only bind the inner wall bricks together, so I don't think there's any linking of inner and outer walls going on.

So if the buttress wall is being removed anyway, how much extra work is it to fit the wind post?

It's an 'Ancon WP4 fixed to inner leaf, with 2 wincro resin ancors top and bottom with Ancon connectors; post tied to wall on both sides at 225mm vertical centres' - presume it's fitted into the brickwork as we asked for something flush with the wall...

How is a wind post installed? Got an engineer's spec that shows a windpost (100x8) embedded in the inner skin of a cavity wall. The buttress wall next to it is being removed, hence the need for the wind post. Are the bricks removed, the windpost installed, and then the bricks/gaps filled? To...

Okay got it. Only thing that makes me think no is that the whole ground floor of the chimney is being removed, including the back wall, so the timber would be secured right at the bottom of the masonry, and then the builders would have to support it and fit the steel beam under it. So I think...

Very poor sketch uploaded, can upload a photo tonight if necessary. This is what I meant by bolting another joist to the sides of the existing two. Do you mean put a joist like this on both sides, and then fill the hole in the middle with more joist?

Sorry don't understand that - which timber is parallel to the joist, and which is perpendicular, if any?

We're removing a chimney breast, and have to extend a joist that is resting on one side of the ground floor breast. The gap is about 1.5m, so was going to get hold of a 2.5-3.0m joist, line it up next to the existing one overlapping by 0.5-0.75m at each end, drill through both joists and bolt...

Builder is going to use 3 or 4 acrows/strongboys on each side to support the upstairs wall while the beam (3m span) is installed - does that seem the right way to do things? Should it be the builder or engineer that specifies this, as the BCO wants it noted on the warrant drawings. On...

Hi, got a response from my building warrant application for removing a structural wall on ground floor and installation of beam. Not part of the application was removal of a chimney breast from loft to ground floor, as the BCO had already confirmed this didn't need building regs approval. But I...

Thanks. Had a structural engineer friend look at it, and we have to bridge between two joists that are sitting on some of the current bricks before removing the ground floor chimney breast, which should then be a similar job to the first floor. Those joists are only holding up the ends of the...

Okay, 1st floor is removed - remaining wall looks a little sooty, and is still not quite flat but a few passes with the SDS chisel should sort that. Based on the images below, how would I treat this? Any kind of sealing needed before plaster goes on it? And how should I fill any...

Yep all makes sense. What size of hammer are we talking, toffee or sledge?

We have a chimney breast in the room below the loft - that is the 1st floor room referred to above. That is the next part to remove. There is a chimney breast on the ground floor below that - we will remove the chimney breast, and the removal of the rest of the wall from the ground floor is...