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    Fitting DPM when walls are already built

    Screed is to thin. Min 65mm thick on insulation. Also throw some fibres into screed mix Regards oldun
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    Height of extension under the new (temporary) planning rules

    With the limited information supplied, it sounds as though you have a bedroom window above the extension, and this is why Architect has specified 3340 to get roof and flashing below cill. If this is the case, on a 4800 half span over the plate it will give you a rise of 900 and a pitch of 9...
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    Opening wall to install bifold door: how close to corner?

    On the strength of what is in your post, we feel that your pair of SE are t*ssers, ditto your. two builders Never heard the likes for goal posts on an opening that size. Regulations state opening to be 2100 max high. External brick piers to be a min of 665, (three full bricks) Compressive...
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    The birdmouth Thing again!

    Thank you for expressing your appreciation. With respect and by no means taking the p*ss, your last post was like reading a comic. Firstly you can not work out your pitch, angle call it what you like by throwing a straight edge from arris of top plate to arris of wall plate. Depending on size...
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    How level should a new wall be

    10mm high on a corner is acceptable as you can grind that down easy enough before ground floor sill height. You can not blame the foundation as being high. He should have cut the grunter out in the first two courses above founds. Take it down to three course below ground level, then cut...
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    Roof pitch for lean to

    As suggested. providing you have sufficient height above top of frames and underside of soffit then consider awning blind. You can get them up to 4000 in depth and up tp 6500 wide. Or consider a flat EPDM, roof. Snow load will be no problem. C16 47x200 joists will suffice. Can not comment on...
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    The birdmouth Thing again!

    As you have not posted the information requested we can be of little help to you, except tp give you some very basic information on roof framing. Fpr a 17 degree pitched roof the top plumb and heel cut is 73 degrees and the seat cut to the birds mouth is 17 degrees. 73 plus 17 equals 90...
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    Roof pitch for lean to

    A pergola is normally open top, but see no reason why you can not put a lid on it. To answer your question 15 degree on 4500 span the drop will be 1206 on the pitch line.150 for HAP and 225 for timber bressmur. Total approx 1580 below bottom of wooden bressmur and top apex of rafter on bungalow...
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    Roof windows

    Been in this industry, man and boy for 62 years and that is the worst workmanship we have ever seen. Not roof windows. Tiling crap. Lead work crap For your sake hope they are not over drawn Pay them nothing, Give them a playful slap and tell them to p*ss of. Regards oldun
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    The birdmouth Thing again!

    Roof calculations are easy Give us the height above WALL plate, to the top of TOP wall plate. The width from existing house wall and outside of wall plate What size rafters you are using? Will give you calcs and bevels and will tell you a way we were taught back in the 50s to scribe...
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    Brick & block splitting

    With a lump hammer and 100mm bolster we cut the average facing brick in 12 seconds. !00mm concrete block in 24 seconds. There is no machine or tool on the market that will beat that. If their was, we would have one. Regards oldun
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    Help with rafter cut @ rsj ridge

    Will be a lot of fuss when the OP tries to bed down a universal 120 degree angle tile low enough to get a water seal and 150mm saddle flashing below cill level. Have tried Simpsons LSU26Z and the new LRU rafter brackets, Threw them in the skip.Useless.:cry: Regards oldun
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    Ideas for construction method on new summerhouse

    Gary, Very, very busy at moment so will do this in stages when ever have an hour to spare. Slab. Note in your first post that you mention traditional trench fill foundation.. You could do pads and ring beam but suggest you stick with traditional. Trench 450 wide by 750mm deep and 600mm...
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    Foundation slip planes and aerofil 2

    Either do as Tony has said above or use 25mm Jablite compresble polystyrene. or 50mm pink colour Cordex clay board. What ever one you use, line the inside and bottom of trench with 1000 gauge polythene. Reckon your SE must have just finished a dry dock. :roll: Regards oldun.
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    Ideas for construction method on new summerhouse

    Gary, See you are still trying to do your local builders out of earning a crust. :D Will gladly give you some input if you answer couple of questions. 1. What W/m2K do you wish to achieve? 2. How many windows do you want? 3. Have you made up your mind on external finish? 4. Wall...
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    Help with rafter cut @ rsj ridge

    Not our problem Tony. Have told OP that it can not be done. Two hours work for two men to drop steel. That is a lot better than trying to take a flying f*ck at a rolling doughnut. Regards oldun
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    Help with rafter cut @ rsj ridge

    Will see what we can do. Just hope you understand.. A vaulted roof should always be birds beaked over the ridge beam for two reasons. 1. To enable top tile batten to go up high enough to bed your ridge over the 75 or 100mm lap gauge you are using on roof tiles 2. To assist the load and...
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    Help with rafter cut @ rsj ridge

    Possibly, he does not agree with Tony. Possibly he knows the correct way to do a birds beak detail for a ridge beam. Possibly he has taken the advice from Tony. Who knows? Mr Poster Sorry for not coming back to you. Been very busy last three days. If you have sorted your problem out, then...
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    building over sewer

    Can not give you a budget without more information, as their are so many variable factors that we do not know Any way nine times out of ten, Thames water will only allow their own contractors to reroute a sewer They will provide you with a quotation, but knowing that band of sharp shooters, it...
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    building over sewer

    No. You are not doing a build over. A build over is where the sewer does cross the foundation between say 50 and 140 degrees. You are building adjacent to a sewer that is running parallel to your rear wall and you must have at least 600mm clearance between foundation and sewer. Also...
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