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In warm roof construction the vapour barrier goes on the underside of the insulation only. You should have no other vapour barrier anywhere. The vapour barrier that Screwfix do is for walls not for roofs and does not reach the correct specification for a flat roof. Unfortunately the best vapour...

Builder in and around London. I work with some of the top engineers and architects in the UK and love learning from them.

I take it that "foil taped insulation" means you are using insulation that has foil on both sides and you are taping the bottom junctions to form a continuous vapor barrier. If this is so then you don't need to have any other membrane below. Althow the manufacturers will say you can use the...

The old boiler was labeled MAN, once setup ( and that took a long time) it just chugged along. Interesting that the Viessmann 200 series is being mentioned im going to look into that. One installer I spoke to was talking about the Viessmann 100 series so i need to go and find out whats the...

My old eco-tech boiler has packed up and apparently eco-tech have gone bust. The old boiler used to work on a continuous flow that fed four manifolds and the only control over the boiler was the return temperature. (each room has a thermostat that Controls the manifold) Not only did it have a...

Closing the cavity and a C.T is important but also making sure the mortar bed and point is not bridging the drip is just as important. I was driving down the road the other day and took the attached photo of a newly rendered wall with copings on, you can clearly see the bridging of the drip...

This is a new wall and the coping stones have been bedded on cement and that cement and the pointing between the joints is bridging the drip detail

bridging of coping stones and leaking parapet walls

All good points, I used to be a installer of the product and know more installers that now don't install than installers that do! The old owner was the man, the company the brain. The problem with the system Time it takes to lay Roof open time Weather window to long There is...

Up to 2k if it gets me what I won't

I need to alarm a building site in London and at the same time I wont to place some sort of web cam or cctv that I can watch over things from the office anybody come across anything like this Thanks

You make sure that you gauge your mixing materials, you control your working environment so that your laying conditions are always the same, as I've pointed out Roofkreet is a expensive roofing material, its green and is an excellent material to use for a roof garden, or a flat roof you walk on...

His wife and the small close teem he worked with have been able to work out the formula's and press on. You are very sceptical and sound sour ! Is there a reason for this? We have some people in the west of England developing a product further than its been taken before succeed or not they are...

Ask away, I need to update my website and YouTube with more info on RoofKrete, we have been installing it now for around a year, RoofKrete is under some serious expansion at the moment, last year the owner sadly passed away apparently he was one of those mad scientist kept the secretes of the...

All roofing is down to how its installs. Take Mineral Felt a good product with a bad name, if installers refused to install it on a roof that didn’t have the correct falls, took care and paid attention to details then Felt would have a better name. Train the installer and give him time to do...

7mm of Roofkrete is very strong I didn’t trust the product when I started it so I tested it extensively and it douse stand up to abuse. I will be posting a video soon showing a 1.5m square test peace of RoofKrete being thrown about then placed in a bonfire until glowing red, then smashed to...

Hi I am a RoofKrete contractor; we are also trained in Liquid Plastic Liquid Rubber Kemper and EPDM Roofkrete comes with the best guarantee on the market it’s a good product but hard to install and its expensive, somebody mentioned expansion Roofkrete is flexible to a point even throw its...