My Blog

The Slab

  • 09/11/2016

So with the hardcore and sand down and wackered, in goes the 1000 gauge DPM and the 100mm of insulation board with any gaps filled with sticky expanding foam.


I’ve laid some 3×2 timber onto the insulation for two reasons, one to give me a rough depth for pouring the slab, the other to provide a channel for the services into the new build.

I arranged for the concrete to be delivered with a pump so it wouldn’t break my back with the wheelbarrow and save a hell of a lot of time.

Here is the freshly poured and floated concrete slab that Tim (Carley’s Dad) very kindly helped me rake and move around into position. The concrete guys were out the front having a smoke whilst the concrete was just blasting out everywhere so we had to work pretty fast to stop the place being overwhelmed.


I used a big blue float to get it smoothed off, it was the first time I had ever used one. Took some getting used to.

Couple of days later and the slab has hardened off and I have started to build the inner leaf up a bit.

Hardcore and Type 1 time

  • 29/10/2016

Now there is a retaining wall to work with, the Type 1 and the Sand have arrived.

I managed to enlist the help of my brother and brother-in-law in order to shovel and barrow the aggregate through to the back, as I knew it would have killed me alone.

I think the guy that tipped the Type 1 actually delivered ten tons rather than three like I needed, the heap was about eight foot high, and even after we’d barrowed it all around there was still a Ben Nevis on my driveway. Not really sure where we’re going to put all of that, I’m going to have to have a think about it!

100mm of Type one is down, raked and wackered comprehensively, followed by 50mm of sand.

Ashley did a very good job of overseeing the whole affair and occasionally pushing the rake about, so thanks for that Bro!

Craig and I decided to push on, and we got the DPM sheet laid out over the site and thoroughly overlapped and tape jointed, than got nearly all the 100mm insulation boards in. It was pretty dark and cold by the time we’d finished.

I didn’t realise at first that I would need to extend the existing airbricks to outside the new extension, so I had to buy airbrick adaptors, some more soil pipe, and new airbricks and ducting which also had to be run in between the insulation sheets before being concreted over. I hope nothing starts to float when I get the slab poured!

Outline of the building is starting to take shape

  • 26/10/2016
Outline of the building is starting to take shape

So we have started to lay the blocks around the perimeter of the building, and anticipate building up two courses all the way around in order to retain the concrete slab floor.

Had a bit of a nightmare with the blocks as the footings were not exactly level and I had to cut some blocks down to make up a level course, and these 7N dense concrete blocks are very, very heavy. That makes cutting them a bit of a nightmare and means the mortar has to be quite stiff otherwise the block just pushes the mortar out from under the block due to their extreme weight.


Walls starting to take shape

Once I’ve got the two courses up, it will be hardcore and sand next. That’s going to mean a hell of a lot of shovelling and wheelbarrow action, which I’m really not looking forward to.

New Drains Are In

  • 13/10/2016
New Drains Are In

So, after waiting forever for my fittings to arrive after they were missed off the first delivery, I ended up cancelling the order from Plastics Express and buying all my soil fittings from Screwfix. I couldn’t wait any longer. It had been over a ten days since the order was placed and the delivery was supposed to come next day.

The manhole walls were knocked in and the channel removed ready to be piped through:

Old manhole removed ready for piping through

The original builders of my house must have poured about a yard of concrete every metre of pipe as it took me two hours of breaking to expose enough clay pipe to actually fit the coupler to accept the uPVC pipe. This is tiring and tedious work, as I had to exercise extreme caution not to damage the 50+ year old clay pipe yet use enough force to smash away very hard seasoned concrete.


Here’s the new uPVC underground drainage pipework in place and partially backfilled with pea shingle.

New underground pipework

Called up and booked for Building Control to come and have a look and within a very short while I had an inspector from building control around to inspect the works and all is well. Backfilling over the pipework has been done and the area is safe to walk over once more with no holes to fall down and even better than that, no stinking leaky pipes to contend with.


My next job to start on the first course of blockwork around the footings to retain the concrete slab.


Preparing for new drains

  • 09/10/2016

Today I had a quick go at breaking out the old bottle gully in order to change it into a soil drain pipe for the new kitchen and ensuite.

Broke out the concrete above the pipe only to find that the clay pipe was broken in several places and the joints between the upvc trap and the clay pipe consisted of a upvc coupler pushed over the clay pipe.

This never would have sealed effectively and has probably been leaking since day one. As it was the pipe has been leaking badly so the ground was saturated wet and the smell coming up from in the ground was horrendous.

Truly awful and indescribable. Years of food waste, washing machine waste and dirty dishwater all combined into the soil around the pipe makes for a nauseous experience.



My temporary drain pipe from the kitchen into the soil until my new drainage pipes appear, hopefully Monday, and the pile of stinking soil that I had to excavate by hand.



All my underground drainage pipe work should have turned up today, however the delivery was incomplete. They only brought the lengths of pipe and my DPM sheet. All the fittings are still awol.

In the end I asked Carley to stop off at Screwfix while she was out in order to get a clay adaptor and a 45 degree bend so I can hook up to the existing pipe. She came back with just the right item, she’s good like that.

Fitted the clay adaptor to the existing pipe, and added a 45 degree bend, then piped the kitchen waste pipe into it. Still awaiting the rest bend to bring it up to vertical, hopefully it will arrive tomorrow.


Next big job is the installation of the new drainage pipes and destruction and removal of the manhole to pipe it through, when the rest of my absent fittings arrive. Not the nicest job in the world to come but we’ll get through it.







Concrete Footings Poured

  • 04/10/2016

So today the footings were poured, or should I say, pumped.

12 cubic metres of concrete went into the ground in less than an hour, and my shuttering seemed to hold up perfectly. Then again it did have stonking great lumps of sleeper supporting it.

img_0141 img_0142

Next is to wait for it to harden enough to remove the shuttering and backfill around the sewer pipe, and then onto the new drainage.


Of course, I had to christen the foundations of our new extension with all of our names and the date!


Cement Mixer has arrived

  • 03/10/2016

So, I decided to buy a new cement mixer rather than buy a second hand one with questionable reliability and it turned up today.

Its the first time I have ever actually seen a brand new Belle mixer so I decided to take a photo for posterity.


They’re rarely seen in the wild so please take some time to marvel at its fresh, unmolested beauty.

I give you the Belle Minimix 150

Digging the footings

  • 01/10/2016

So, following the approval from building control we have started to get the footings dug.


Got Tristam Mayes from Mayes Plant Hire round with his mini digger and tracked dumper to get the footings excavated. He operated the digger and I drove the dumper.


There’s 22 linear metres of trench and the whole job took a little while longer than originally planned, as the corner closest to the beech tree was absolutely full of lumps of flint which made progress very slow going.

It took three visits from this truck to remove all of the spoil.


Nearly done



I had to dig out both the corners by hand due to there being a 6 inch sewer pipe running across the property which we did not want to disturb. This pipe has got to be shuttered when the footings are poured as the concrete cannot place any load on the clay pipe.

Visited Cambridge

  • 28/12/2015

We decided to visit Cambridge early one morning to do a bit of shopping and to look at the ipad pro. Decided that a little stroll around Cambridge would also be nice, we headed down this lane which leads to the River Cam.


2015-12-28 10.28.35 HDR

Sketchup – My first attempt at drawing a building plan

  • 22/12/2015
Sketchup – My first attempt at drawing a building plan

So, we want to build an extension on the side and back of our house and I want to do as much of the work myself as I possibly can. This obviously starts with an idea which I need to illustrate on paper or in this case, draw on my PC with a planning tool called Sketchup.

Now I didn’t stumble across this program on my own, I found a website of another chap who has done the very same type of project himself and has kindly written a blog all about it upon which he referenced this very program. Therefore I have downloaded it and decided to give the extension drawing a bash and see what it looks like.

Here’s my first attempt.

House & Garage

This is our house as it currently stands.

We want to extend the building at the side with two storeys and round the back with a single storey. This will add one bedroom with an en-suite bathroom, a utility room and a large kitchen/dining room.