Inspiration please ! Bridging the gap from slabs to gutter.

[XRO]

Hi folks

I have a slabbed patio over storerooms and a retaining wall. The builders have left too little overhang for the slabs of the patio to drip to the gutter. Its not an option to get them back.

Here's the problem;

Untitled

• XRO
• 28 May 2014
• 1

So I need to provide a run for the rainwater falling on the patio to allow it to flow to the gutter.

Any inspirational ideas? So far I have come up with bonding a flexible membrane to the lip of the slab that then drapes into the gutter. Its not exactly elegant though.

Cheers

Tim

 

[ree]

The slabs need to project out to discharge into the gutter but, more important, the roof covering below the slabs also needs to project into the gutter.
What the eaves detail is, its impossible to tell from your pic.

You dont have a fascia or a drip edge so water will find its way behind the gutter and down the face of the render.

You dont have a handrail either. A Blg Regs and insurance requirement.

The rendered parapet on the far side of the roof is showing moisture retention.

Your suggestion for "bonding a flexible membrane" will not work.

Far more info about the total building detail would be needed to help me, or hopefully us, to understand how the extension and roof have been built.

 

[XRO]

Not sure what to do about the render yet, and the balustrade is in hand. As it were.

No real detail to give on the wall detail - there really isn't any.

Here's the cross-section;

Untitled

• XRO
• 28 May 2014
• 1

Hopefully the diagram is clear but the current external detail is just render up to the insufficient overhang of the slab. The membrane terminates behind the render.

I'm looking for either an elegant drip edge type solution as ree suggests, or otherwise move the slabs out and live with a wider grout line on the patio. That doesn't come without further problems, hence investigating the drip line. Even with a greater overhang I need to fit something and as is clear - I'm no expert. In fact I can usually find unique ways to entirely mess a job up.

T

 

[freddiemercurystwin]

Why not make a chase into the render, stick in a small lead flashing that laps into the gutter, secure with some lead clips and render up?

Like this:

Picture Title

• freddiemercurystwin
• 28 May 2014
• 1

with clips:

https://www.youtube.com/watch?v=spiNeHZFCsw

 

[XRO]

That I can do!

As long as I don't make a complete balls up of it then the overall look should be pretty acceptable too.

Thanks freddymercurys twin.

Hallclips are about a quid each from here;

http://www.geniusroofsolutions.com/buy/

Cheers

Tim

 

[XRO]

And black Ubiflex would help keep the look.

 

[colind86]

Good advice from freddy! The slabs shouldnt oversail the edge of the roof as the joints aint sealed ! So it wouldnt ever be a water tight drip edge. The single ply base should have a proper drip into the gutter if installed right as Ree says!

 

[XRO]

Cheers folks.

Any ideas on the water retention in the render?