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What mortar droppings? :sneaky:

I thought DPC was supposed to project into the cavity to hold the insulation up? May be wrong though.

Does anyone actually do that? Or perhaps, does anyone actually want to see that? It always looks unfinished and wrong.

No signs of shaling or displaced tiles. It's in quite good nick. The staining is bird droppings from roosting on the chimney. Not an issue If this is a council property, I'd insist that the bloke who did the chimney pointing is not allowed back for any further roof work.

Just from the photo, or viewed from the ground, I'd give the chimney a medium-term rating of "within the next 10 years" for repointing. A lot can depend on the actual softness of the mortar not just that which is missing, and further deterioration tends to be accelerated once mortar erodes, not...

It's very common to have people who lay bricks, but who are not actual bricklayers.

If the timber is still damp let it dry thoroughly. Then poke it to make sure its not soft. Brush the mould off as much as possible and treat the area with a fungicide - you can use a normal bathroom anti-mould product for this. If you are confident that the web is OK and has not started to...

The concern is the web (the OSB board), not really the timbers on the top and bottom Is the joist dry now? If so, are the top and bottom timbers soft (poke with screwdriver) and likewise is the web firm or flaky? Check in multiple places?

9.5mm pb on studs at 400mm centres, no need for the ply layer

Yes, the joints have dried too quickly. Any powdery joints will be quickly eroded by weathering and especially frost action - which in turn can promote the rest of the joint to crack. The best way to prevent this in future is to cover the wall with polythene or damp hessian for a few days...

There is a requirement to ensure waste drainage work is done properly, to applicable standards and does not cause health or safety issues. However it's not controlled work that requires building regulation approval. Other environmental and local water bye-laws also apply to waste water. As a...

There is no requirement to get approval for reusing an existing connection for similar use. That's not an alteration. There is a requirement to ensure that any new waste pipework is properly installed to allow proper discharge, be trapped, and avoid things like syphonage There are regulations...

This is commonly 'forgotten' by roofers. And it's actually a sign of a potentially good roofer if they do mention it. The building regulation application is purely related to checking and then increasing if necessary the loft insulation under "Part L" of the building regulations. That's all...

Short, non-AI translation ... The property had Finlock gutters, which are concrete blocks forming an external gutter and laid across the external wall which the roof timbers sit on. These have been removed, so it needs to be checked if the roof is still being adequately supported over...

Lots of builder's offer fibreglass because they think it's easy - a few tins from the merchant and a roller. Strictly, installers should be fully trained in the system they offer. I would only specify liquid coatings for very large commercial roofs as there are some advantages for certain...

A lot depends on whether the copings are tile- like or concrete, and if thickness and surfaces are even or will need adjusting when laying. Remember that any joint must be filled and bonded, or you will get ugly vertical stains on the wall below.

You need to be mindful of the number and locations of any drilled holes, and whether these should be designed or confirmed by the engineer. Timber in the full depth of the web would be preferable, with staggered fixings to control cupping. And fixings to be within the middle third of the web

Glass must be 'safety' glass. Laminated would be better, as it would stay in place if impacted.

B/regs does not apply to this work. However it should still be constructed to any applicable standards as there are responsibilities under negligence laws should a family member or guest/ visitor be injured due to non-compliance. The handrail return is fine as long as its properly and securely...

Form soffit boxing, which will give you a vertical surface to flash. You've not shown what's going on with the tiles and verge and whether they need adapting