Should you cement the cut tile around a velux window

[smilerbatten]

Hi All.

I am currently laying some mock bond mini stonewold tiles to my new extension....i am half way through my roof laying and its going well. but i am not sure what i should be doing around the Velux windows, on the tile cuts, you can see under the tile from the sides of the Velux, i am worried that water could get in and whether its good practice to cement these tile edges as you would do a traditional gable end or whether people just leave it as is and let the velux flashing kit / foam upstand do their magic of keeping out the water?

I am using the Velux EDZ flashing kit as the tiles are 31mm thick and these kits allow this, although the diagrams suggest these are more for ridged interlocking tiles.

Any thoughts? do you know what i mean?

Thanks
Jason

 

[Cumbrianroofer30yrsexp]

You do not need to point around the velux window.Just let the foam do the magic .Some people may cut the foam if the tiles stand proud,others dont.

 

[datarebal]

EDZ is correct for MS. The foam should be trimmed to suit, dont just let it compress .

 

[smilerbatten]

Thanks both for your replies. I will try and be a bit more careful with the trimming of the foam... i rather hacked at it on my first couple of attempts..

As you know the mini stonewolds are very big tiles, and on the lowest run of tiles around the bottom of the velux and goes over the bottom part of the flashing kit, there is no foam so you can see under the cut tile on either side, is this normal as well? should I just tuck something in the gap to stop insect or anything getting in there..

One last question, i have a gap at the top of the tiles between the last run of tiles and the house (its a lean to extension). This gap is prob about 70mm, i can cover it with lead flashing but should i do anything else? pack it with another batten, fill it with cement...anything esle?

I should hopefully have this finished today! its been a long and interesting process learning about roofing....think i will stick with my daytime job in IT for the time being though, although its nice to be out in the sunshine for a change!

 

[Cumbrianroofer30yrsexp]

Most people set their battons so there is not gap at the top.Not really a problem,Just nail a double lath in there.