concrete base

  1. CCoomber

    Raise a concrete floor

    I have a concrete slab floor and I need to raise it by 2-3inches what would be the best way of doing this? Originally I was going to pour some concrete, however I have recently seen some self-levelling compounds which can pour to a depth of 2inches is this a viable option of are there negatives...
  2. D

    Concrete slab finish

    Hi Guys/ Girls, Looking for some advice I’ve recently had a concrete slab poured for a garage to be put on. It was poured about 7 days ago so I stopped watering it 2 days ago and now as it’s drying out it’s almost like there was a layer on the top after it had been floated.. Will this...
  3. L

    2nd floor flat, concrete floor disintegrating

    I have a 1960s 2nd floor flat. Removed old carpet tiles from the kitchen to find what I would say are quite significant cracks and deterioration. In parts it seems the concrete is disintegrating as can be seen in the last photo which was taken after some light brushing and makes me think it’s...
  4. J

    Kitchen Floor Mess

    I am somewhat out of my depth with a house renovation and would massively appreciate some advice regarding the kitchen floor... There has been subsidence at some point in the house and the concrete kitchen floor was uneven to the tune of around 50mm from high end to low end. I ripped off the...
  5. M

    Mortar or Concrete bed? For sloped shower pan.

    Hi All, Just finishing my wet room. I have a linear drain in the end embedded and secured levelled into the concrete floor. I am now ready to do the wet room slope pan. I have placed two pieces of strip wood on each side and raised them accordingly to my slope measurements. I will use these...
  6. A

    Type 1 v Type 2 Hardcore

    Hi, I am building a base for a hottub. I have dug out the area but would like to ask which of the subject should I use to compact down before the concrete. Or any other suggestions? Thanks in advance. Regards Al
  7. S

    Garden Office - but cannot set a permanent base...

    Any help would be great here... We're moving house and have a 10'x8' garden office (only 5 months old, on a flat, concrete base) that we want to take with us... No problem in moving it (fortunately my best friend owns a crane firm!) but, and it's a big but, the property we're moving to is...
  8. N

    Pouring slabs at different times - connect with rebar/helibar?

    Hi, First time post - go easy on me. I'm building a side-return extension on my victorian terrace which also requires the removal of two internal walls which divide the kitchen into 3 rooms. To keep the house functional and to save money, my plan is to work my way back from the end of the...
  9. A

    Concrete base on sloping Garden

    Hi all, I am wanting to put a concrete base in for a hot tub in my garden. The garden slopes from the rear to the front. If the base is circa 2.5m x 2.5m the drop is approx 30cm. The base will have to be shallow at the rear and deeper at the front as I am building decking around it. A couple...
  10. P

    Concrete base for a hot tub on wet clay soil

    Firstly, I'm loving this forum and very glad I found it. Secondly, after using the search function and reading as many similar posts as possible, I'm still worrying about a problem we've got in our garden. We've been planning on putting a hot tub in our garden and we're in the process of...
  11. J

    New floor advice for old house

    I have purchased an early 1900s stone built mid terraced house and it needs a new floor completely, old concrete slab is broken and wafer thin. I have begun digging out said old floor which contains no hardcore and about 1-3 Inch of concrete. I was expecting to replace the floor with: Hardcore...
  12. DerMitchie

    Cuitting channels into concrete slab for plumbing and electrics

    We are having to cut out channels in our existing kitchen floor slab for a new kitchen island. I will need to place an electric feed for the sockets; cold feed, hot feed and a gas pipe. I will also have to re-do some drainage so will dig out for that and re-cover. So I guess I'm keen on...
  13. H

    Draft under patio & damp concrete

    Hi, Lifted porcelain tiles a few weeks back and removed cement. Some of that cement was under the patio door base frame. Now there is a draft coming from that area (we can also see a black membrane). Is this simply a case of ‘plugging the gap’ / using sealant before levelling and installing a...
  14. M

    Best mortar/concrete base for pedestal supported patio - thin slab

    Hi I'm looking for advice on the recipe to use for concrete. I'm about to lay the concrete slab on which I'll fix my 30mm thick, large, rectified stone slabs using pedestals. The pedestals are needed to overcome multiple problems of levels and drainage. It will be laid on top of block and...
  15. M

    Tiling on new concrete floor that vibrates - glue/grout advice?

    Hi I'm about to lay porcelain floor tiles on a concrete screed in a new extension. No underfloor heating. The tiles are fairly small (50cm square / 50 x 25). Area is 7m x 3.5m. Should / can I do anything to counter the noticeable vibration when I walk across the screed? When I walk normally...
  16. D

    Summer house on concrete base... advice pls

    Hi all, having searched and searched for a clear answer I’m hoping some one can help. I’m going to try and build a 3m x 3m garden room over lockdown. There is already a concrete base down which I am going to put it on which was laid in 1950s I think, very flat and level. I planning 2” x 3”...
  17. A

    Concrete Pad

    Hi all, looking to install a concrete pad approx 2m x 2m on slightly sloping ground. Can anyone advise how deep I will need to go, thickness of the base etc. I will undoubtedly have a few other questions but I need a starting point please. Regards Al
  18. Mike7898

    Shed on concrete base

    Hello, if building a shed/garden office directly on a raised concrete base the perfect size do I need to allow bearers underneath the shed or will I be ok as my membrane will overlap my concrete? Cheers
  19. R

    Shed: Wooden Sill to concrete advice needed

    Hi All, I have a concrete slab in my garden where the previous owners shed once stood. I now want to build my own "Posh Shed" there. My issue is with connecting the wooden sill to the concrete in a damp free manner. The concrete slab is on a slope so ground level is higher at the back which...
  20. K

    Please help: Conservatory floor higher than rest of the ground floor

    Hi, I'm trying to find out if it is possible to lower my conservatory floor level as it is 50mm higher than the rest of the ground floor. Im not sure what the floor base is made of, its a solid black/grey material, asphalt or concrete maybe? How deep could this layer usually be and could I...
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