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Hi bobasd. The roof and dormer are original from when the house was built in 2005 by Westbury homes. I have owned it from new and I presume they would have not got the NHBC warranty if it was not to building regs? Never had a problem with the property till now. All the homes on the estate are...

Hi bobasd and datarebal. Had the guy round again to check his work and he couldn’t find any issue where the felt and eps tray installed. He even checked the loft and didn’t see anything obvious. Attached a couple of more pictures. One of before the felt and tray fitted as well photo of the...

Thanks bobasd for your advice. They have taken photo of the work they did. Attached. Looks proper. I cannot get into that part of the loft as is blocked by a joist half way up the roof else I would have inspected it from the inside. As said he sealed both sides of the dorma also. Any other...

Hello, I have a leak somewhere in the roof and water ingress into the 2nd floor bedroom. I had a few roofers check and they said it was the felt rotted so had a layer of felt fitted up to first batten with epc trays all the way along the roof and also the valleys on both sides of the dorma...

Hi noseall they haven’t put the slab in yet. Just built the outer and inner leaf and dug out the centre ready for the hard core, insulation and slab. I was just asking that since the cavity is filling with water from outside rainwater probably coming in through the base of the foundation meeting...

If it’s level with the concrete in cavity which is 150mm below ground level will the holes also not be below ground level? Also the water is pooling inside where the concrete slab floor will go. I assume that will not be an issue once the slab is down and roof on right? As water will not come...

Thanks at what level should the weep holes be put?

Hi, I’ve just had a dwarf wall for a conservatory built and have noticed that there is rainwater in the cavity about 50mm deep after heavy rain earlier this week. The rainwater appears to be seeping in from the outside as when I empty the cavity wall it fills up slowly and I notice the water...

Ah ok. I am just worried about the structural integrity of the wall with such a big hole below the air vent which itself is already a hole in the wall. I presume there should be no issue if a couple of bricks are removed and a 100mm pipe is put in. Wall should not weaken and crack over time...

Thanks. Is 2.5inch pipe sufficient or do I need to use a 4 inch pipe? I want to make a small a hole as possible. Thanks again.

Just another question. Do the existing air vents need to be removed and replaced with solid bricks for structural integrity or is it ok to leave them in place? Asking because by removing the existing air bricks won’t it damage the dpc that sits right above them and then cause rising damp in...

OK thanks for your help.

OK thanks. Just wondering that if it is a telescoping vent on the other side it will not ventilate properly unless i also put the vent through the inner leaf to the underground ventilation. Also does the pipe that goes to the rear elevation of the conservatory, does it need to be protected to...

i can run a pipe under the floor but it will not mate with the air brick because the air brick is where the inner leaf of the wall will go as can be seen in the pic. As per my measurements about half the air brick will be covered by the wall. Would it be sufficient to angle the pipe out of the...

Hi, I am building a conservatory and now that the foundation have been laid I have noticed that one of the air bricks on my existing wall will be in line with the inner leaf of the wall of the conservatory. So how can i extend this vent to the rear elevation of the conservatory without having to...