Fascia size

[Jupiter01]

My garden room has a 5 inch ring beam wrapping all 4 sides. This will have a soffit on the underside (overhang) and a fascia mounted to this ring beam. I will be using a 15mm osb board for the roof, followed by an epdm layer. This will have the edge and gutter trims.

What size fascia should I use for this and will it work with the trims, etc?

Thanks for your help.

 

[noseall]

My garden room has a 5 inch ring beam wrapping all 4 sides. This will have a soffit on the underside (overhang) and a fascia mounted to this ring beam. I will be using a 15mm osb board for the roof, followed by an epdm layer. This will have the edge and gutter trims.

What size fascia should I use for this and will it work with the trims, etc?

Thanks for your help.

Fascia as in PAR or plastic?

 

[Jupiter01]

Fascia as in PAR or plastic?

white plastic fascia and soffit.

 

[cdbe]

You should probably have bumped your original post with Woody's drawing, and I suspect measure everything to get actual sizes- your ring beam, deck, soffit thickness and the internal heights of the proposed fascias - if the 125mm size ends up way down you might decide it's all going to end up a bit "floppy" above where it's nailed in which case go for the 150mm - it's easy enough to trim down and round off.

 

[Jupiter01]

I did try nudging that post and then decided that a fresh post might be the easiest way to get to the bottom of this.
What order should I do the roof osb, epdm and fascia in?

I ask as I am keen to get the roof osb on and then the epdm. Weather being my pressing concern here. I could then do fascia, soffit and kerb details etc. Could this work?

 

[cdbe]

Yes, get it on then do the rest afterwards, the perimeter adhesive is pretty strong so if you tack the overhang in place so the wind doesn't try to lift it it'll be fine. Don't forget to smooth the edges of the deck.

 

[Jupiter01]

Yes, get it on then do the rest afterwards, the perimeter adhesive is pretty strong so if you tack the overhang in place so the wind doesn't try to lift it it'll be fine. Don't forget to smooth the edges of the deck.

So, I’m thinking:
- Get the osb roof boards on
- get the epdm in and tack the epdm overhang onto the perimeter beam
- fit soffit and fascia. The fascia will need to be lower than he finished height of the epdm?
- kit kerb and gutter trims

 

[Jupiter01]

So, I’m thinking:
- Get the osb roof boards on
- get the epdm in and tack the epdm overhang onto the perimeter beam
- fit soffit and fascia. The fascia will need to be lower than he finished height of the epdm?
- kit kerb and gutter trims

Can I get some validation on the above approach please? Thanks again

 

[noseall]

One would normally fix the fascia and then have the roof weathering material lapped over it. Then the roofer finishes his roof edges with dedicated trims.