joists

Hi all, just in the final phases of planning a loft conversion, I am not going to apply for building regs but will be building to the regs, the rationale being there is an extension at our house that wasn't signed off when built (long story) and therefore I will need to get indemnity insurance...

Hi there. I am building a treehouse. It will be fixed to two joists that will sit either side of a tree. I plan to tighten the two joists toward each other, either side of the tree, but am unsure what bolts / fixings are best to use. The tree is at least 450mm / 18 inches wide, then each joist...

I appreciate things are hard to explain without pics but here goes. I have a square house with an attached square garage (just say it is the same size as the house) but this is set forward of the house by around 2 metres. I am building a small extension to the rear of the garage so back of house...

12mm PB going up on ceiling, what difference does it make wether twin or coarse? Are twin/coarse intended for different purposes? I had to shim the underside of joists with 9.5 ply strips, panel pin and pva fixed, so I'll probably use longer than the usual recommended 38mm (not that 38mm...

If cable is installed perp to joists, threaded thru a series on in--line holes in joists, does the cable need support additional to and between the joists? The gaps between are 320-350 Not that it seems to have made much difference to the original sparks that wired the house, there's a 1.5mm...

I am replacing two windows in a victorian house from wooden sash windows to PVC windows. The windows are on opposite sides of the house with a stone outer lintel and wooden internal lintel - solid walls with no cavity. Both stone lintels have recently been replaced. I imagine the internal...

Hi I am going to be installing the first floor joists and boards on my house extension and have a question about access! :unsure: After the joists are installed I intended to install the floor t&g boards on top which is all great, although how would I gain access to my new floor when it's...

Hi I am nearly at first floor height for my extension and I have made a hole to check the existing floor level. The bottom of the existing floor joists sit level to the bottom of the hole I made and the top of the joists level to the purple line in the picture. Regs say: Restraint straps must...

Hi, We have had an extension built and are having the layout of the house completey changed so thought it would be a good time to install underfloor heating. I'm a boiler guy by trade but have never installed UFH but it doesn't seem too complicated. Firstly I assume that in the new extension...

Hi, I will be having a small flatroof to the side of the house (2m x 2m). Wanted to check if I need to put the Masonry Joist Hangers directly into the existing Brick Wall? Or if I can put a timber wall plate and then timber joist hangers go into the wall plate similar to attached (I have...

Hi All I am looking to cover an existing external balcony (currently no slope) with hollow composite decking boards. I want it to be slightly sloped to allow rainwater runoff. My question is can you get shallow angled joists (that have a triangular side profile) and which the decking boards...

Hi all, I've just stumbled across this forum and am hoping someone will be able to shed light on the issue in my home. Whilst buying my house, we noticed the floors seemed uneven. I paid for a full structural report via the bank and asked specifically for this to be inspected. When I called...

After we had a leak from out flat roof I took down the plasterboard only to find that the joists are resting on a ledgerboard/wall plate instead of either resting inside the bricks or on the ledgerboard with joist hangers. I don't know why the previous builders did this when they could have...

The 3 pitch pine joists shown are cross section 9.5" x 2.25". Supporting pitch pine beam is under joists as shown in picture below. Beam is getting moved from under joists to end of the joists. Plan to use joist hangers to connect joists to beam. Anyone recommend correct good structural hanger...

Looking for some advice please. I need to remove a section of joist that is sitting on the padstone of a newly built structural wall in order to fit a steel post. The issue I have is copper pipes that would prevent 4x2 or 6x2 noggins connecting joists either side of the joist to be cut away. The...

As part of an extension I'm converting a car port to a room, the old car port has another room above it. Would I plasterboard (insulated type for heat retention/sound proofing)) the ceiling before I do the walls? Do the recessed edges that take the joint tape/mesh run parallel to the ceiling...

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...