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You can't go back to previous customers and get the vat back off them. They advise people to get vat registered when starting the business, but it's a requirement if you expect to go over the limit within 30 days.

There isn't a legal requirement as there is in the USA to be a licenced contractor, just voluntary trade associations.

Are you in the USA, maybe California? If so noseall's got it wrong, it's 9ft 4in or 2.84 and a bit m.

It depends on how your payment structure is worked out. For example, are you paying for the materials, and then paying for his labour separately? If so, then you'd want the material reciepts. If he's priced for labour and materials, then he'll keep the receipts himself, and just invoice you...

I've done jobs for people in that way for years. Nowadays I only work on an hourly rate, but everyone I've worked for has been happy. If he's a good tradesman you have probably got a decent deal.

TBH I thought it was 25% of the roof until last year when I job I was doing involved Building Control on some drainage work and the customer asked me about some roof repairs. I said to the BCO, that it looked like around 25% to me. He said 25% causes too many issues working when doing repairs...

If all the windows are part of the extension, then the cost is included in it.

You'll need to ask your local Building Control, as they all have their own pricing lists, as well as there are private companies. Generally, they offer a 50% reduction when adding something on.

https://www.speedcrete.co.uk/brick.html?cat=160 I get of lot of my jointing tools and trowels from here. They are really good quality, especially the Rose ones. They might be a bit pricey for DIY, although they give a better finish. There is a method of pointing rough brickwork known as Tuck...

Most of the roofers I know are part of the Competent roofers scheme, so will self certify at the end of the job. It's right that it's unlikely that the council will ever take enforcement action, and unlikely a surveyor will pick it up on a house sale, as a roof soon alters from it's brand new...

The roof is still classed as the thermal element, whether the insulation is at joist or rafter level. If you want to add insulation at joist level, the easiest time is when the roof has been stripped.

Look it up woody. It's 25% of the building's envelope and 50% for the roof. It's on the Planning portal.

The 25% is the total building envelope. For a roof under 50% can be replaced without regs.

The law since 1984 means that both the builder and the owner are responsible for Building regs. The builder carrying out the work can be prosecuted up 2 years after the completion of works. For the home owner an enforcement notice can be sent up to 12 months, unless they go to the High Court...

There is a difference between the finished article. A pure air lime, such as lime putty, or hydrated lime when fully cured will be more flexible and breathable than a hydraulic lime. The disadvantages of pure lime are that one: it takes much longer to harden up and needs damping down and...

Hydraulic lime was around in the 30's. It was either made by adding a pozzolan to lime putty, or the Lias lump lime (hot lime) that was delivered on site produced a hydraulic lime. With lime mortar, a sharp sand can be used because unlike cement mortar it's still a workable mix.

@danlightbulb Question 1 There's 2 main types of lime. Air, or non hydraulic lime and hydraulic lime. Air limes set by absorbing carbon dioxide only. Lime putty and hydrated lime are examples. Hydraulic lines set by a combination of absorbing carbon dioxide and hydration. When people say lime...

I can understand you having a problem with the various advice around. I'll give you a more detailed answer to your questions when I get home.

I didn't answer your original question, because firstly I didn't see it, and secondly I don't answer every question on here. PD6678 2005 is a good source of information for mortars in the UK, but you'll have to pay for it unless you have access to the Construction information service. Unless you...

Your understanding of the subject is wrong. If adding hydrated lime to a cement mortar mix only worked to make the mix more workable it wouldn't be a specified mix on certain jobs. Plasticizers are much cheaper and easier to use, so hydrated lime wouldn't be used if there was no benefit to it...