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Bit of an odd question really but I'm not sure what to do! We build the siberian larch deck a couple of years ago - last year we cleaned it with ronseal decking cleaner and reviver and it looked brand new again. This year however quite a few of the boards have stubbornly remained green. It's...

Our drawings spec RWA45 between 400c/c joists - great, RWA45 only comes in 600. Whats the best alternative? I've seen a few that would do it fine, like Rockwool flexi slab, but it's something like 60% more expensive despite looking exactly the same.

My second (and hopefully final) staircase question, now with added newels after my last question. Looking to have this staircase up to our loft conversion, fitted over our existing ground floor stairs: This is how it relates roughly to the existing first floor joists and stairs opening in...

I think I know the answer to this, but want to double check. Starting to think about the stairs for our loft conversion, thinking of doing this: There would be a wall running along the right hand side of the main run (ie back of the picture) as you would expect, BUT not along the bottom, ie...

As per the title really, not sure if taping the joints between boards is sufficient or whether a separate VCL is required? Seems a bit pointless when the clips for the UFH pipes will penetrate through it into the PIR anyway...

Starting to think about my kitchen extension wiring. Before anyone asks, council are inspecting and testing so it's all legit! I've only got a single slot available on the consumer unit (the existing cooker circuit that's unsuitable). Could I connect two ovens and an induction hob to one...

I've put the steels in for the flat roof of my extension (to support roof lantern), and I've put them in higher than I originally planned to, so the inner skin is now 50mm too low for a standard 45mm wall plate. Could I just use a 95mm wall plate? Saves me cutting a lot of 40mm slithers! I...

We've got to lintel over a sewer at foundation level, so one lintel under each skin. How do you close the bottom of the cavity? We haven't dug out around the sewer so it will be sitting just above the earth unless we do anything else. Surely over time it would just fill up with rubbish and...

Wondering about getting ibstock heathers instead of LBC's for our extension, 50s council estate in west London. I assumed the alternative bricks would be inferior, but I've read somewhere that someone thought that actually they're superior. Anyone got any thoughts? Are they going to be as good...

On our floor slab (5.4m x 4.2m) design we have 225mm of cellcore underneath our reinforced slab (A193 50mm from bottom). The slab is thicker at the edges and rests on the inside of the foundation...so this makes it a suspended slab, right? The design also has a layer of sand-blinded hardcore...

The thought just popped into my head as we'll be digging soon. There will be a perpendicular sewer through foundations, of which we have a good idea of location and depth from both ours and our neighbours manholes. We will have foundations 500mm either side of sewer and 150mm below as per the...

Curious if anyone's got any ideas on this. I'll be speaking to installer as well, but still. Just had an Atag Economiser 35 fitted, supposed to get 16.1l/min DHW out at 35deg rise. I'll bullet point as there's a lot to take in! Cold input not an issue, 20l/min directly before boiler With output...

We've got plans for a rear extension, which includes a steel ring for knocking through the rear wall. I will be DIYing most of it, but most probably not this beam. Nonetheless I want to get an idea of how it needs to be installed and at what stage of construction. Was hoping we could build the...

Another one about my potential garage wiring. My roller door has a courtesy light output, 230V 500W max. This isn't the exact model but it's very close http://www.linkcontrols.co.uk/files/LC-2308.pdf I will be having 4 x 65W LED strip lights on 2 two-way switches, fed by an FCU off the same...

Now that I've got permission from the council to start my garage wiring, there are a few questions I'm not sure about. Background: For the CU would be simple for me buy one with one 32 and one 6A mcb and a 40A rcd already fitted. There is an existing submain going to an outhouse that I'm...

I want to move the CU and circuits in my old outhouse to my new garage, quite a simple task in the grand scheme of things and I'm confident I've got a reasonably good idea of what I'm doing. I'm certainly happy to do the work myself. So I'm curious, what information is required to make a...

Hi, bit of a long shot this, but does anyone know where I can get treated TGV cladding that has an offset groove so it can be secret nailed easily? The profile I want is like this https://www.spahaustimber.co.uk/product/siberian-larch-secret-nail-tgv-cladding-sp03/ but only after common or...

Sorry for the essay but I want to make sure I'm not being stupid! We're upgrading our heating/hot water systems soon and want to get rid of loft tanks etc so our options are either a combi or unvented system boiler. Getting around 20l/min from kitchen and garden tap running at same time. It's a...

Hi all, Looking to start building my 6x5m single skin block garage soon, need to order materials. Just wanted to check a few things! Want to have an EPDM roof on 175x75 C16 joists across the 5m length (4.8m span) on 400 centres. Will 100x140 concrete lintels be alright for openings of 2.2m and...

Hi, Me and my girlfriend will hopefully be moving into our first house in about a month, but I like to have my research done! Been wondering about a few things that are bugging me... Got a search back yesterday from the solicitors showing a sewer running parallel to the side of the house all...