concrete

  1. O

    How to demolish wide concrete structure

    Hi there I need help to demolish/break down a concrete structure, made with 9 blocks of 44cm (L) x 21.5com (H) and 10cm (W) - LINK This structure was built by joining these blocks horizontally, rather than vertically as the aim was to have a heavy, low profile to act as a base for a project I...
  2. J

    Closing / filling a cavity wall space after Bi-folds have been fitted

    Hi everyone, I recently removed a small internal + external wall that had a pvc window above it, and had bifold doors fitted in that place. (The doors were fitted on the external leaf, with a fresh a DPC between them and the brickwork.) Now, it's time for me to fill the cavity gap and finish...
  3. M

    Clean then Primer before self leveller on old concrete?

    I've got some really greasy areas on a concrete floor. What's best to loosen thn remove this prior to primer them needed self leveller compound. Elbow grease of course but anything that good for grease removal in concrete?
  4. S

    Best tool for testing moisture in concrete

    I’m planning on laying glue down flooring. Manufacturers requirements are no more than 75% moisture in concrete otherwise I have to lay DPM first. what is the most accurate and inexpensive piece of kit to give me this reading? I don’t really want to spend more than £50 … I’ve seen some on...
  5. N

    Sloping Patio towards house & DPC

    Hi all, I’ve recently moved into a new build timber-framed, brick-clad house which has a small dry-laid concrete patio at the rear. During this wet summer I’ve noticed that water pools towards the house. A spirit level on the slabs confirms the same (but to which degree I’m not sure). I’ve...
  6. D

    PVA Bond or Contactors PVA

    Concrete coping stones in front garden have cracked and gone soft with rain due to not being sealed properly with paint. So will be filling and shaping with toupret exterior filler. Everbuild do 501 PVA Bond and also 506 Contractors PVA. Which is best for sealing dusty concrete first as I...
  7. C

    Cracks in brickwork - Have the lintels failed or something else?

    Hi I’m wondering whether anyone could offer me any much needed advice. I’ve recently noticed these cracks after having ceiling plastered & coving removed. They can be seen both internally & on externally on outer edges of the lintel. (Pictured) No idea how long they have been there, looked at...
  8. C

    Cracking in brickwork - Have the lintels failed or something else?

    Hi I’m wondering whether anyone could offer me any much needed advice. I’ve recently noticed these cracks after having ceiling plastered & coving removed. They can be seen both internally & on externally on outer edges of the lintel. (Pictured) No idea how long they have been there, looked at...
  9. L

    Concrete "speed bump" for leaky garage door

    Hi all, I'm hoping to get some advice/feedback for an idea to fix a leaky garage door. I have no building experience, but I'm a fairly hands on / practical person so I'd like to give it a go. Basically, our garage sits 6 inches or so below road level. When the rain comes down heavily or for...
  10. E

    Do I need to sort this render crack or ok to leave?

    Hi all hope you're well! Our house has a concrete render with some cracks in it pictured below. I have had no problems with damp and it has been like this for at least a year now. I have kept an eye on it and seen no issues/it getting worse. Am I ok just to leave this? I've got a quote to tear...
  11. B

    Kiitchen Floor

    I'm working on my daughters house she's just bought. Lifted the lino in the kitchen and found cracked screed that was loose exposing quarry tiles which have areas of badly damaged ones. Also had to have a redundant gas pipe removed as it was badly corroded. The plan is to install LVT. Is it ok...
  12. G

    Looking for repair advice: window frame

    https://www.dropbox.com/s/7wjbojk0o51vnvz/IMG20230611212505.jpg?dl=0 So the concrete? Or whatever this is, is largely compromised and crumbled. What should I do to replace or repair it? Thanks (And sorry for my lack of understanding for the correct material terminology just started repairing a...
  13. J

    First time slabs

    Hi, First time laying slabs, putting down 2x2's for a hottub, 2.4 by 3.6m. Using Type 1 as a base (8cm approx) then a layer concrete, 1 part cement, 2 part sand and 3 part stone. For the concrete layer I don't know the quantity to order for each, spoke with the builders merchent and they told me...
  14. J

    concrete drilling

    Hi I'd like some advice on the best way to drill into concrete support pads for a garden pergola pls. The steel leg feet are around 17cm square and I planned to make the pad 40cm square and around a foot deep to take chem fix M10 studs. Using a 2.7J SDS+ drill on some high strength concrete...
  15. C

    Skimming door threshold

    Hi. I have been told I need to level an external lower threshold for sliding doors and increase height by 6mm. Is a sand and cement mix too thin? Will be fixing to brick and concrete. Thanks
  16. W

    Wall construction question

    Hi everyone, I’m re-doing my bathroom in a month or so, and have just started talking back some tiles etc to find out what’s behind/any nasty suprises. just knocked a couple of tiles off a stud wall behind the bathtub, and unlike the rest of the wall which seems to be concrete board, the whole...
  17. D

    Binyard drainage into sewer.

    Hi. I plan to put a concrete floor down in my binyard and I want to drain rainwater into the sewer. The binyard used to be the toilet block (probably till the early 70’s) and I’ve removed a lot of the shallow sewer pipes that were there. There’s just one clay pipe leading out of the binyard...
  18. C

    Bathroom drain backfill - how long to wait before pouring levelling compound

    Hi there, I've backfilled a whole circa 150mm deep (see photo) at deepest section in our bathroom after relocating 50mm pipes and drain. Room is insulated, so roughly 18-21 degrees and normal humidity. How long would it be advisable to wait before priming and then levelling with Setcrete High...
  19. D

    Groundscrews vs Trench fill/pour

    Hello builders. I'm a competent carpenter/DIYer and I'm about to take on my first single storey extension. Working within my own budget, timeframe and skillset it will be a timber framed extension clad in vertical larch with a flat EDPM roof. My question right now is about foundations. I'm...
  20. J

    Aluminium Wall mounted Pergola

    Hi, I am looking to install the above which is 3.6 x 3m. The 2 supporting legs will be on the lawn and wondered what the best way is to install concrete pads for the feet to bolt to. The lawn is not completely level and I'm concerned at getting both pads at the right vertical height for the...
Back
Top