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HerbJ last won the day on May 18

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About HerbJ

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  • Birthday February 17

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    Sunningdale Berks

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  1. As far as I am aware, MBC only design, supply and install the insulated/passive slab. They do not take responsibility on the ground work - that is al the preparation for the installation of the insulated/passive slab. So extract from my quotation from MBC "Supply and fit Engineer signed off Passive Slab foundation system, with a 0.105W/m2.K U-value and Zero Cold Bridges (The client strips the site, installs the first 150mm of stone and the site roadway). MBC supplies and fits 50mm stone for levelling, the concrete, the steel, and the drainage pipes are brought 1 metre from the finished foundation for others to connect to." There may be structural engineering requirements for extensive ground works, depending on the specific site and soil conditions. Some sites may only require 150mm of stone, on which the insulated foundation is normally installed but most require a much more stringent requirements - because of adjacent existing trees my foundation required a 850mm of stone at the front of the foundation decreasing to 600mm at the rear of the foundation. Other sites have required piling.
  2. I have used can strongly recommend Wet & Forget for algae on myrender, . It was brilliant for cleaning algae around the MVHR Exhaust vent, which I know was the subkject of a post on here a few months ago. But it doesn't really deal with dirt from raIn splashes off terracing, coping stones and borders etc
  3. Useful, thanks Slightly off topic, what is the best method of cleaning render? Clealry, power washing is a NO and it cannot be brushed too vigorously either! Can you offer any tips?
  4. Glacier slate-Natural Canadian 508x254mm
  5. As you can see from my photos, my slab is flat and the transition to the ACO drainage channel and drive is also flat/level. It is SUDS drive which gently slopes way from the garage and house. I have a 4877mm x 2125mm HORMANN electrical operated garage door, which incorporates a substantial rubber seal on the bottom of the door , which compresses slightly as the door closes.. We have never experienced any water ingress, even from driving rain, and no leaves or dirt blow in when the door is closed.
  6. i have misleading info in my post above - I couldn't find the actual data when I respond and made a guess without checking ( we only had a paper copy of the original quote and I couldn't find it before I posted - apologies. So in the interests of providing good data, SWMBO has has now located the paper copy and the actual facts are: 1) Landscape Designers would seem to work like architects and their normal basis of fees is based on % of final landscape cost. I attach a redacted copy of Appointment for Landscape Design Agreement, which sets out the expected % Fees, Their % fees vary from 17.5% to 10%, depending on the total costs off the work value. 2) We only used their service for stages A and B but on a hourly rate basis, as we had no intention of using their services for Detailed Design and other subsequent stages. Our cost was £3500 (including VAT). SWMBO still insists that this was money very well spent! 3) Landscape Designers do not undertake actual construction services but would offer project management and contract services to supervise/manage the actual works. ( analogous to architects mode of engagement). 4) For completeness, I summarise the actual landscaping costs ( 2015/2016) , including ground clearance, regrading, retaining walls (both concrete block and wood sleepers), all foundations ( including garden shed, paths, terracing and drive), supply and lay terracing (210 m2), supply and lay SUDS drive (Marshall stone 110 m2) topsoil for planters, copings for walls, all service ducting for cables and water to various points in garden, ACO drains in terrace etc . Rear and side garden and terraces/paths/retaining walls - £45,311(% VAT rated) Drive - £16,450 (% VAT rated) 5) On this basis of these construction cost, the Landscape Fees would have been £4737 +VAT (as a minimum) though I suspect they would not have carried it out a efficiently as my contractor, as we utilised all the heavy machinery already mobilised to site for the main ground works and foundation preparation. So, I have probably been unduly critical of landscape designer fees...... 6) SWMBO did all the planting design and planting, providing many of the plants from cuttings taken from this garden before ground clearance and previous garden. Much of this was completed before the house was completed, as the retaining walls provided a garden separated from construction traffic and builders damage. Of course, we also retained and protected all of the mature hedges, trees and plants during the ground clearance, which provided a great basis for the landscape design/plan. _Appointment for Garden Landscape Design Agreement_a.pdf
  7. @PeterW absolutely correct about pricing and how it ramps up if you require all the services, especially in Surrey and Berkshire, where we built.. For our concept design, the total cost was £3,500 (including VAT which could not be claimed back as it was design service). I will admit to being horrified at this but SWMBO was adamant that it would add value to our overall scheme - she was right, as usual.... The proposed costs estimate for the next phases, including detailed design and then supervision of construction (hard landscaping) and planting would have been £ 6 to 10,000 , depending on the cost of the landscaping works - see my post below The photos I attached were last year. The garden is now looking great, especially with the lock down and all the work that SWMBO has been putting into the garden recently
  8. We used a landscape/garden designer for our garden. Our site sloped up from front to back and side to side. We could not envisage a way forward but the landscape designer developed a clear design that we incorporated in the PP and in construction plans. It was expensive but well worth it, as it provided a clear plan for groundworks and landscaping, which allowed us to utilise the heavy construction equipment as part of our ground works contract. Broadly, they gave us a landscaape concept design, incorporating existing trees and shrubs and using the topographic survey daata. . SWMBO did the planting plans and did all the plant (with a little manual help from me) I attach the concept design, some early ground clearance photos and a couple of recent photos. The company we used was PC Landscapes based in Farnham. pclandscapes_Concept_Design_a.pdf
  9. We cut out the EPS upstand in the garage door opening, pulled back the DPM and cast a level concrete infill. The DPM was just laid under and around the cast concrete infill. Looks like the same/similar approach as @Weebles Looks a bit rough in the first photo but it was leveled with epoxy and a commercial resin floor finish was applied to the garage floor - see photos taken just now. The slight colour difference on the garage floor is just sun and weather outside the garage door ffre
  10. I had 16 loads, each 20 tonnes, of railway ballast
  11. Yes, that what we used. The depth of our this material was deeper for our design 850mm for the front third, then 600mm for the middle third then 450mm for the rear third. our SE specced this because of two oak trees on the front boundary. Somewhere, I have the number of truck loads of railway ballast delivered to site, but I can't ;lay my hands on it. The ballast was installed pretty much as proposed by @PeterW Some photos
  12. Forgive me if this seems rather blunt and harsh but it needs to be said. You must stop and listen to the advice you are being given above and seek professional assistance starting with an experienced structural engineer. The consequence of continuing without a complete understanding of your house foundations and the slope are likely to be catastrophic. As as described by @ProDave below- it may lead to failure of the current house foundations and the collapse of the front of both your and your neighbour's houses, leading to a far larger cost than the original retaining wall. Your building insurance company may not respond to such damage if it caused by your own negligence in NOT take seeking professional advice. Lots of nice people on BH are trying to give you some guidance on how to proceed to plan the work and get some idea of cost and what is possible but none of this advice can be relied on to undertake the work - none of them have seen the job site, nobody has carried out any site Investigation works and they are certainly not structural engineers, qualified to undertake a full design of the works to ensure structural integrity of the retaining wall and ensure structural integrity of the existing house You CANNOT AFFORD THE CONSEQUENCES OF NOT taking professional advice!!!
  13. There was another thread, to which contributed. I used a local glazing company for supply and install - see full thread below
  14. It's also way off topic and little relevance to 99+% of the membership of Buildhub.