Cutting my roof! Roof vent/light fitting

[Reimotim]

Hi Guys,

So... leaking roof vent/light since I got my van a few years back. After several years of mastik and bodging repairs, I have decided to fit a new one. However it appears that Reimo fitted a size that is no longer available. The upshot of which is that I can't fit a 400x400 cos the hole is to big, but it is too small for a 500x500.

This means that I will need to enlarge the hole in my hitop roof. Question is will it be ok to jigsaw it? I 'm worried about cracking the roof and am just after reassurance and/or any tips from those more experienced than myself.

Thanks for looking
Tim

[scoobydrew]

Tim,
I've just enlarged one on mine and I used a jigsaw no problem.
I did use a small toothed blade so the cut was smoother.
I would check what you have to cut first as I fitted a 400 x 400 but hole was smaller as its the top that's sized not the hole.

Don't forget you may have to alter your wooden frame inside as well.

[Reimotim]

Hi Andy,

Glad to know yours went well.

I'll definitely need to sort the wooden frame as it is a rather crumbly, flaky mess at the mo!

Tim

[Tobyt25]

If its a pop top you can't go bigger because there are steel strenghting bars that run either side. I have a brand new fiamma roof vent white you can have for £25. I brought it for mine but was slightly too large. its 390mmx390mmx50mm

[Reimotim]

If its a pop top you can't go bigger because there are steel strenghting bars that run either side. I have a brand new fiamma roof vent white you can have for £25. I brought it for mine but was slightly too large. its 390mmx390mmx50mm

Thanks for the offer Toby
I've got a hitop, so I'm hoping it'll be ok.
I'll let you know.

Tim

[Reimotim]

Well, after a Sunday afternoon and some time with a jigsaw, I have a newly installed fiamma 50x50.