Some advice regarding 125mm hole for cooker hood fan please?

[Midwest]

Stuff that Mid. I would get a £80 extractor and spend the rest on eating out more often...!

Don't think he cares, looking at 30k for the kitchen & worktops. The Gaggenau appliances added another 10k. I did say it was rather expensive, but I got shot down in flames, rather like Dave OCD.

 

[Dave OCD]

Am I bovvered ?

 

[Midwest]

Am I bovvered ?

Sorry Dave, know how it feels now. Upset one of their mods, got told off

 

[johnduffell]

John, I will bow to some of your possibly superior knowledge on this. I agree with Mid though, a bit of 100mm flexi running for 30cm through an external wall is not going to disrupt things much.
Also, I have never noticed a massive difference in noise levels with the ducting reduced in size to 100mm. Domestic kitchen extractors generally are noisy so and so's..

Don't bow to my knowledge, it's more theory than experience, I'm learning a few things here myself I just have a personal preference for quiet extractors so it's my personal crusade!

 

[HappyHippyDad]

I've used a 152mm core drill for 150mm ducting. Was a snug fit, but was fine. There's a reason they make the core sizes they do... the 117mm core drills that you usually get in sets are for soil pipes (110mm) though will serve for a 100mm fan duct, with ample wiggle room. 127mm for 125mm ducting should be fine.

Was that flexible ducting Steve?

 

[Midwest]

Don't worry hhd, 100mm flexible ducting will be just fine

 

[Leesparkykent]

How can drilling from one side be classed as the wrong way of coring the hole? That video shows some DIY numty having a go.I've never had a problem with bricks blowing. I know where I would rather be stood whilst drilling the hole and that's not at the top of a ladder on a gable end with a drill and core bit in the hand.

 

[happysteve]

Was that flexible ducting Steve?

No, rigid.

 

[Pete999]

I bet I know which thread will the the most popular come next week

 

[Pete999]

How can drilling from one side be classed as the wrong way of coring the hole? That video shows some DIY numty having a go.I've never had a problem with bricks blowing. I know where I would rather be stood whilst drilling the hole and that's not at the top of a ladder on a gable end with a drill and core bit in the hand.

Wouldn't to be up a pair of steps using this blighter