Flat roof leak repair

[psarinuk]

Hi,

I've a flat roof on the house that looks in a reasonable clean condition. There is a rain pipe in the middle of the roof (house), around the drain opening is a metal grill (for leaves etc). I've a small leak from there coming into my first floor wardrobe.

I've used several types of silicone, sealants and leak repair paint but the problem comes back after 6-10 months. As you have guessed, its come back again last night. The permanent container at the top of wardrobe has helped collect the water.

Can someone please advise the best way to seal the felt around the metal grill on my roof so the repair can last this time?

Thanks.

Some examples I've used are:
http://www.toolstation.com/shop/Adh...Roof & Gutter Mastic 300ml/d180/sd2350/p11002

http://www.diy.com/nav/build/buildi...sons-Roof-Seal-Black-4L-9272955?skuId=9282655

 

[Alastairreid]

Untitled

• Alastairreid
• 26 Apr 2009
• 17

 

[psarinuk]

Hi,

Acrypol seems quite expensive. Found this which looks similar with great feedback:
http://www.screwfix.com/p/flexacryl...kg/57518#product_additional_details_container

I was hoping to find something in a silicon tube as the felt around the metal grill is sitting proud, so will need a semi-solid paste to seal it rather than a paint but what do I know?

 

[skhudy]

I've got a small leak, and am going for one of the liquid rubber type ones when the weather gets warmer e.g Ronseal Isoflex Liquid Rubber 750ml From what I've read the liquid rubber variety are better and last much longer than the other types, which are only temporary fixes.