joists

I'm in the process of re-roofing my flat roof and was thinking about the possibility of using it as a roof terrace in the future. I've stripped the roof and the current joists are 2 X 6 inches and are 2.45 m in length. The spacing of each joist is 20 inches. Would sistering with the same...

Hi all, I’ll try to explain the situation. I have a rectangular ground floor room which currently has the joists above it for the first floor removed. I need to add in an internal staircase and so I am in the process of working out how best to construct a wall to section off the stairs and...

In my living room there is a sort of brick wall running lengthwise which supports the floor joists running across the room. Is there a name for that 'wall?'

Unfortunately we are already amidst our renovation job, which includes also the redoing of a flat roof and upgrading it to a warm roof and I have a question regarding the insulation of the fascia, I find shocking that there isn't really much material on the web about it! The new joists have been...

So after a long weekend of removing my chimney from the attic and 1st floor I’m stuck! It looks like the 1st floor joists are sitting on timbers that are resting on the chimney. Whats the best way to tackle this? This is a bedroom that is going to be repurposed into a bathroom. Structural...

Hi All, I am currently re-boarding my loft after lifting old chipboard to put down insulation. I am using 22mm P5 T&G Caberfloor boards. 2400mm x 600mm. The floor was previously strengthened and levelled by running 3x2 joists at right angles across the top of the existing 4x2 joists. The...

Hi all, first post but I think I'm going to end up a regular here! I've recently moved into a house that needs plenty doing, and one of the first bits is to sort the loft out. I've attached some pictures, I hope. My questions are: I seem to have some kind of metallic cradle between the...

I installed a loft hatch today, and in the process found that the joists on either side are at different heights, an entire inch apart! I'm looking to board out the loft in the new year, with 2x4's across the existing joists and insulate and all that good stuff, but now I've to work out how to...

Hi all I have a garage with flat roof neglected for years hence the joists are rotting away, I need to replace them but only problem is these joists are 5.3 metres long! I've not seen any timber this long anywhere, longest is 4.2 metres so I was wondering is it possible to join two 3 metre...

Hi, I'm refurbing the galley kitchen in our Victorian terrace (solid brick walls, no cavity). Three of ceiling joists (which are the floor joists of the bathroom above) need replacing completely (they can't be sistered) but are pocketed into the brick walls on both sides. One of those walls is...

Basically I wonder if anybody could give me any tips on making my loft space into a nice clean usable area. First of all I am not putting in any stairs I am still going to be using the existing loft ladder the space up in the loft is very large indeed I was hoping it would be okay to keep the...

Hi, going nuts here a bit. I'm trying to do the dims for my garden office and am doing 5x2 roof joists with firring strips on top for the pitch. I am doing 400mm centres, but this does not seem to work to get the end of the OSB (1220x2440) to end on half the joist. I've read somewhere you do...

Hi, I would like to lay a new floor covering in the first floor bedroom in our victorian terrace. The problem is that the 5x2 floor joists (actual size 120mm x 60mm) are at 800mm centres with no noggins and span roughly 2.4m. Ideally I would make the structure better in order to accommodate...

Hi, I would like to lay a new floor covering in the first floor bedroom in our victorian terrace. The problem is that the floor joists (120mm x 60mm) are at 800mm centres with no noggins, spanning roughly 3.4m. Ideally I would make the structure better in order to accommodate a standard 18mm...

Hi all. My 1st floor bedroom floor is wonky. Drops unto 40mm from edge to centre - looks like bowed joists. I'm loathe to sister each joists with new timber and someone suggested just shimming the joists - add a strip of wood to the top of each joist with varying thickness to create a level...

Hi guys I'm in need of some advice please, I'm trying to do some calcs for a loft what I need to know is how to work out the self weight of purlins and individual joists, (looked every where) I would also like to know when adding a point load from a trimmer carrying the floor do I have to also...

Hi All I have lifted the floor in our renovation to find the builders have not made a particularly nice job of attaching the joists to the RSJ as you can see in the photograph. Am I correct in thinking the proper way would be with a piece of word infilling the web of the RSJ and joist hangers...

Hi all, I'm putting 10 x 2 joists in for a flat roof. The span is about 3m from wall plate into steel and then the same out of the other side of the steel to the fascia. The steel section is 254 tall so I've gone for 10x 2 to give a flat roof and a flush ceiling. Can anyone advise on the...

Hi So, I have to run a 44mm waste pipe through my joists in my bathroom - not ideal but such is life. My thoughts are to hole and sister joist each in turn. My question is how to do this? Reading around, i see my options as follows: 1) Buy 2x7 and glue + strap each side of the joist for a...

Hi, I know that the first thing that comes to mind is not to do it – if can be avoided. However I don’t think it can… I’m planning to do as per attached drawing, in a photo the connection to the main waste stack is slightly different as I realized it will need a hole in the joist outside...