Visqueen pre formed corners. Wasting money?

[flanagaj]

 Given I have been probably wasting far too much time and energy worrying about getting the detailing right in relation to our required 'Basic' Radon protection, I am now wondering whether I should scrap the proposed purchasing of Visqueen pre formed corners and instead just adopt the good old tape approach.  I am not sure whether many people use the pre formed corners and given that the garage door opening pair and garage side door pair are ~ £240, I am struggling to justify the expense.

If I can adopt an approach of cutting DPM pieces and overlapping and jointing with tape, does anyone know of a resource that shows how you can form internal and external corners.

[Mr Punter]

You can get double sided butyl tape for sticking DPM / DPC / radon membranes.  Use that.   Don't overthink.  This is just to comply with regs.  Anything built before the 1990s has nothing at all, so that is at least 85% of all housing.  Use youtube to have a practice doing the corners.  It may help if you ever do flat roof membrane in future.

[Russell griffiths]

Just pretend you are wrapping the wife’s Christmas presents. 

[flanagaj]

1 hour ago, Russell griffiths said:

Just pretend you are wrapping the wife’s Christmas presents. 

In that case, it will look utter xxxx