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Roofing

Flat Roof Repair: Europolymers or Kemper sysyem

Anonymous user 23/02/2024 - 2.52 PM

Hello, I am having problems with my roof. Have had two tradesmen round to have a look and quote. Can anyone share their experience of working with the two different systems mentioned. Is one better than the other? Is there anything I should be asking? Also is there an as good alternative that would be cheaper? Is it correct that insulation must be added? Neither have mentioned this and also will building control need to be notified and who does that. The roofer or I? Thanks in advance for your thoughts on this. First tradesman (went up on the roof) will - Recover with a 2 layer Europolymers felt flat roof system comprising of 1 layer 2.5mm TD underlay and 1 layer 4.5mm diamond SBS mineral cap sheet. Replace the outlet with a new code 5 lead pipe sleeve. We have included all associated lead flashings and GRP trims to the abutment walls. Second tradesman (did not go unto the roof) - Erect scaffolding Kemper System 2K-PUR membrane as discussed

Are you a tradesperson and able to answer this question?

1 Answer

A&J Surveyors Ltd

Rating: 5 out of 5

Newent

Of the two systems the Kemper is better since this provides a seamless roof, meaning it is less likely to fail. Although felt materials have improved I would still not rate them because there are too many seams. Felt products also degrade quicker. If you replace the entire covering on a flat roof and the room below is habitable then you need (if the construction physically allows) to convert a cold roof to a warm roof to comply with Approved Document L of building Regulations. You need to go through Building Control for this or alternatively it can be signed off by a Competant Roofer (basically a roofer who has been on a course and pays £700 odd pounds a year to Building Controls job for the Government). A warm roof is in essence approx 105mm of solid insulation such as Kingspan TR26 sandwiched between two layers of decking, this insulation sits outside the house and prevents the cold temperatures permeating through. The best option is Fibreglass, the cheeper option is EPDM. Hope this helps Andrew @ Fibretechs

Answered22 October 2014