Marley plastic hip apex-cap (angle)

[ffoxy99]

I come across these caps a lot working on roofs and they regularly flying off in high winds due to the fitters not following the fitting-instructions properly or the fact that they are just pretty rubbish

If the customer finds it in the garden you can usually put it back on, assuming the straps and gaskets aren't also missing or broken.

They are surprisingly expensive to buy new - if you can find them in stock locally and mail-order is a bit tricky as it's £120 delivery from Roofing Superstore - so nearly £200 for one cap.

Anyway if you have to get a new one you need to be absolutely sure you are getting the right angle as it's an expensive mistake if you end up with the wrong one. There are 9 options (3 angles in 3 different colours)

I made a carboard template for a missing one the other day and measured it when I got home to be 30 degrees

However the hips of the roof aren't the same angle as the face of the roof. They are a good bit shallower.

So, when ordering the cap, should I be going with the angle of the roof or the angle of the hip?

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Marley Modern apex-cap

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part number on rear

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silicon should not be needed but when they come off annually.....

[Someone-Else]

So, when ordering the cap, should I be going with the angle of the roof or the angle of the hip?

Ask where you are getting it from which angle to use, they make/supply it, none of us on the forum do.

[ffoxy99]

FWIW I got the cap today and figured they must mean the angle of the roof as opposed to the angle of the hip.

Hope I'm right or it's £60 down the drain and a wasted 40 mile trip to get it

£60 for these 3 bits

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price

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plastic cap is very thin

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[ffoxy99]

Well. The cap turned out fine. So, it's measure the angle of the roof, not the hips.

I also took time to fit it correctly. Unlike the bell-ends who fitted the roof/gutters etc. (everything has been done to a low standard)

In their defence they probably can't read so rely on urban-folklore and/or what their big mate told them instead of the manufacturer's fitting-guides.

The straps (unions) are mostly used between each ridge or hip tile and c/w a foam gasket. Each strap has 3 tabs in the middle along with 'claws' on the ends

The tabs centre the strap between the tiles and the claws grip onto the 'rails' of the tray that all the tiles sit on. This is pretty simple and is usually done correctly.

The straps, however, are dual-purpose and are also used to secure the apex-caps. As the caps cover the end of (3) tiles there is no groove to cover. The tabs on the underside of the strap would stop it sitting down correctly so the instructions tell you to snap them off and keep the gasket and not to snap the claws off.

Your average fitter knows better however and over time I guess the accepted wisdom has become 'snap awl the bits orf and chuck at the rubber fing if it's toight. No wawter ganna ga dawn is it?'

The straps are therefore easy to put on but not tight and then you start losing the caps in high winds.

I left the claws on and kept the gasket and they were very tight to put on. You also need to cut slots in the tile to accommodate the claws after marking the tiles via the cutouts in the cap.

There are probably only 2 caps on most roofs. My customer's roof has 3.

The extra work required to do it right might add half an hour to the full roof installation so you can see why they don't bother. Especially if it's a Friday afternoon but doing it the right way I'm confident it will never blow off.

Marley fitting instructions

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keep the claws

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cut slot in tile

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claw grips rail tightly

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snug

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